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Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by -=Z28=-
Nice MSgt. Ive thought about something like that. On a scale 10 - 1, how bad is the resonance in the car? I'm planning on hitting up the local exhaust shops to see if I cant dig through their bin of exhaust leftovers, mainly for angles, etc, to ease my installation. Otherwise I will just order a kit for angles and bends. But def fabing my own set-up.
Thanks for posting your build and sharing exhaust pics.
The exhaust sounds great dumping just before the axle and there is very little resonance in the cabin, I can drive with the windows down and carry on a conversation or listen to the radio with no problems. The trick to getting the mufflers tucked up high enough for decent ground clearance is to take a large rubber mallet and dent in the inside rear corners of the seat tubs just enough to make room for the muffler. The seat bottom hides the dent and the added ground clearance is worth the effort.
Re: 84 Z28 build and lookin for info on 383 stroker.
Good to know. Any sound mat under the carpet?
Wondering if exhaust ports are in similar location from one head to another? Thinking about doing some exhaust fab work, and heads are at machinist, I have a few other sets that I can set on block and put engine in car to figure out what I want to do... any idea?
Be nice to have one of those foam mock up blocks....
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by -=Z28=-
Good to know. Any sound mat under the carpet?
Wondering if exhaust ports are in similar location from one head to another? Thinking about doing some exhaust fab work, and heads are at machinist, I have a few other sets that I can set on block and put engine in car to figure out what I want to do... any idea?
Be nice to have one of those foam mock up blocks....
Re: 84 Z28 build and lookin for info on 383 stroker.
Your build was close to mine with the Dart Pro1 heads I have the Scorpion Roller Rocker and Holley Stealth Ram EFI system on top. Stopping at Bills Superette getting 92 Octane gas it cam off the dyno at R&R 450hp &460tq. When on the dyno operator was shocked it sat at idle of 750rpm and loved throttle response. Gary Heddon at Magnum Super Chargers built this engine. Was told I could step on the cam a bit more for more hp but will lose all of the low end tq. It will stay as is since my wife and teenage boys will drive this in my Station wagon.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by Davejs
Your build was close to mine with the Dart Pro1 heads I have the Scorpion Roller Rocker and Holley Stealth Ram EFI system on top. Stopping at Bills Superette getting 92 Octane gas it cam off the dyno at R&R 450hp &460tq. When on the dyno operator was shocked it sat at idle of 750rpm and loved throttle response. Gary Heddon at Magnum Super Chargers built this engine. Was told I could step on the cam a bit more for more hp but will lose all of the low end tq. It will stay as is since my wife and teenage boys will drive this in my Station wagon.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by -=Z28=-
Well the exhaust ports must have different spacing or something.. my Y-pipe isnt even close to fitting from dart heads to chevy cast heads.
It may be that Dart has raised the exhaust port. I've looked and can't find anything that says so but it's not an unusual approach.
PS.. Get some long tubes.
Re: 84 Z28 build and lookin for info on 383 stroker.
Just engine dyno,
Peak TQ was 464.7@4600
Peak HP 450.2 @5600
@3500 405TQ 278HP Start of pull
@5800 405TQ 446hp End of pull
Ron at the controls just kept revving the engine commenting how it was just so responsive with the EFI. He also said he just loves seeing guys build an engine that makes great torque for the street. He also checked that it was pump gas and laughed that it was.
Re: 84 Z28 build and lookin for info on 383 stroker.
Very nice.
DynoSim shows the OP's engine may be capable of similar numbers. I'm hoping for much the same but mine is 355 based and a 236 @ .050" cam. I would need to make peak HP closer to 6500 to realize anything near 425-430.
Question: What header were used on the dyno? Shop headers? Chassis headers? What size primary and collector? And what length collector extensions were used?
My reasons for asking are data collection mostly.
Re: 84 Z28 build and lookin for info on 383 stroker.
You may want to check out the PipeMax program.
Based on the parameters you enter, i.e. intake/exhaust valve sizes, induction CFM, cam specs, etc. it'll crank out primary/secondary diameters and lengths for peak torque or peak horsepower as well as the overall exhaust system lengths according to the pressure wave harmonics. This is a part of exhaust pulse tuning and why it's so important to, in the case of running open headers, that the collector length be just right. There is a lot of power to be lost if this is neglected. The same principles are applied to the entire system as well.
Check out this thread: https://www.thirdgen.org/forums/engi...heck-my-7.html
Go to post #305. You'll get an idea what the program can do. It's pretty slick.
Re: 84 Z28 build and lookin for info on 383 stroker.
Thanks skinny. I think I'm going to run Lt headers to 3" pipes to 10 series that dumps before the axle. Similar to MSgt's set up My interior is out of the car so I may be doing some custom cutting and clearing to make plenty of ground clearance.
Other than that, no updates really. Just waiting to hear from the machinist. Prob in a good week or so. I know he has a lot of stuff he is working on. I may gap my rings and get them all ready to go on the pistons tomorrow.
Nice. I was going to go 1.6. I actually had them ordered off ebay, but I gave the guy my work address and not home address. I sent him a pm with the correct add and he canceled the order...So... I never re ordered them. 300 bucks... I know my cam guy said I should go 1.6.. Now that I'm having heads milled I need to check and make sure I have plenty clearance. I was thinking, .039 isnt much... Just a tad over a 1/32. If that causes ptv issues....
Was thinking about their 25 dollar boxes for 3" bends. Hell I will get a couple. And then a nice kit with bends and some straights... I plan to fab my whole exhaust minus headers.
Still debating on oil pan.... How do I know if I need the thin or thick front seal? I cant remember what I used. And I dont know exact block year...
Re: 84 Z28 build and lookin for info on 383 stroker.
.039" is a perfect target quench. As always, check your P/V clearance although I doubt you'll have any issues. Especially with the cam straight up. We've never had any problems with the XR288HR which has similar .050" numbers to your cam. I'll have to revisit my clearances as I'm installing that cam at 4 degrees advanced.
I purchased 2 J-Y bends from Vibrant. 2 1/2" stainless. There was plenty to build the y-pipe I posted earlier.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by -=Z28=-
Nice. I was going to go 1.6. I actually had them ordered off ebay, but I gave the guy my work address and not home address. I sent him a pm with the correct add and he canceled the order...So... I never re ordered them. 300 bucks... I know my cam guy said I should go 1.6.. Now that I'm having heads milled I need to check and make sure I have plenty clearance. I was thinking, .039 isnt much... Just a tad over a 1/32. If that causes ptv issues....
Was thinking about their 25 dollar boxes for 3" bends. Hell I will get a couple. And then a nice kit with bends and some straights... I plan to fab my whole exhaust minus headers.
Still debating on oil pan.... How do I know if I need the thin or thick front seal? I cant remember what I used. And I dont know exact block year...
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
.039" is a perfect target quench. As always, check your P/V clearance although I doubt you'll have any issues. Especially with the cam straight up. We've never had any problems with the XR288HR which has similar .050" numbers to your cam. I'll have to revisit my clearances as I'm installing that cam at 4 degrees advanced.
I purchased 2 J-Y bends from Vibrant. 2 1/2" stainless. There was plenty to build the y-pipe I posted earlier.
My quench will be, .028 gasket, plus I'm .010 in the hole. So, .038 quench.
The .039 I was referring to is how much material is being removed from my heads to obtain 66cc chambers. Sorry about the confusion.
I agree, I dont think I will have any ptv issues, However if I get 1.6 rockers, I could be getting close.
Just ordered canton 15-244 pan and pick up. Also spent the 40 bucks for the canton gasket. Hope it was worth it...
Also got LT Headers, and a few other things. Man, 700 bucks is easy to spend.
Talked to dyno guy. hope to get it to him before nationals at BIR as it sounds like he races up there. So I have 2 weeks otherwise it will have to wait till he gets back. He has several sets of headers so All I need to do Is tell him what they are and it sounded like he will have a set with holes in them for readings. Thats nice. I may see if we can make some pulls with his best sets to see what numbers we can get. However, I dont want to push it too far. I'm going to be nervous as heck when I do this... I know I went the extra step with a new crank and rods but still...
What oils you guys recommend? Break in/weight?
Will keep ya all updated. Anyone feel free to chirp in here.....on anything...
Just ordered canton 15-244 pan and pick up. Also spent the 40 bucks for the canton gasket. Hope it was worth it...
Also got LT Headers, and a few other things. Man, 700 bucks is easy to spend.
Talked to dyno guy. hope to get it to him before nationals at BIR as it sounds like he races up there. So I have 2 weeks otherwise it will have to wait till he gets back. He has several sets of headers so All I need to do Is tell him what they are and it sounded like he will have a set with holes in them for readings. Thats nice. I may see if we can make some pulls with his best sets to see what numbers we can get. However, I dont want to push it too far. I'm going to be nervous as heck when I do this... I know I went the extra step with a new crank and rods but still...
What oils you guys recommend? Break in/weight?
Will keep ya all updated. Anyone feel free to chirp in here.....on anything...
-D
Yep, 700 bucks won't go very far in this hobby, I spent 7k on my 383 swap, but I replaced everything, exhaust, radiator, torque converter, fuel pump and regulator; nothing was reused and that gets expensive fast. The head gaskets you got should work just fine.
As far as oil and filters go, you won't have to worry about any special oil with a roller cam, I use a non synthetic 10w-30 and a Wix filter (51061). I may swap over to a synthetic after I get 6k miles on the new engine, but most builders frown on it any sooner than that.
Last edited by MSgt Luttrell; 07-31-2016 at 06:53 PM.
Re: 84 Z28 build and lookin for info on 383 stroker.
Double check those gaskets. One description says 4.00" bore. Another says 4.100". I think they're 4.00". Reason being as they're from GM and that typically applies to a new block. I seem to recall going through this before. I think we called GM to verify.
Not too sure on the .039" off the heads. I went .026" on mine and my machinist said beyond that there might be fitment issues with the intake. This is something you'll have to discuss with your guy.
As for oil, I'd go with a quality mineral oil (non synthetic) and a good filter and change them after the engine reaches temperature. This is something you'll have to do on the dyno provided your dyno guy doesn't mind. I'm sure he's done it hundreds of times before. After that I'd run (and I will run) a quality synthetic. It seems the best on the market these days is Quaker States Ultimate Durability full synthetic. I'll run 5W20. You may want to check out this paper on oil testing. It's a REAL eye opener and lays to rest all lot of the myths floating around today regarding oil. Roller cam or otherwise, you need the best oil.
There's a lot you can skip through to get to the story on the oil testing itself.
Yeah, 700 bucks doesn't go very far or take long to spend. I haven't doled out what MSgt has (this time around) but I'm at 3 grand just for the top end. And I had most of the parts.
You may want to consider bringing your headers to the testing. He should have various lengths of collectors on hand and will probably know what would suit your engine best. Not sure if he'll use EGT sensors for A/F ratios or a wide band sensor. Either way, you can add your headers after he's dialed in the fuel curve.
Something else to add here, and something else to spend your money on, seeing as your going carbureted, I strongly suggest investing in a wide band O2 sensor and gauge (Air Fuel Ratio) . It'll pay for itself in dialing in your part throttle ratios not to mention WOT. What you'll get on the dyno will need further tuning once you have the engine in the chassis and are driving on the street. I've been there many times and there's absolutely no substitute. I also have a vacuum gauge next to my AFR gauge and am always checking to see what's going on in that regard.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by MSgt Luttrell
I may swap over to a synthetic after I get 6k miles on the new engine, but most builders frown on it any sooner than that.
I'd like to know the builder's logic behind that.
You may be interested in that paper I posted a link to as well. Maybe a few builders too.
Don't get me wrong, I'm not about to argue with any experts but some of these builders are far from that category.
Re: 84 Z28 build and lookin for info on 383 stroker.
I did a bunch of reading/research and they are 4.100, good for up to .060 over bore they say.
In regards to the $$ Oh trust me, I know this all too well, I have 7k into my paint and body and its not done... Besides, you cant take it with you...
Dyno guy said to just tell him primary and collector size and he is sure that he has something close if not the same. I will bring mine once we get it dialed in and see what happens. His main thing was the carb and dizzy. I am going to tear into it and make sure its good to go. I have a jet kit around here somewhere. He told me to get this vacuum advance kit for the dizzy. said hei's throw out way too much total and will need to get dialed back. I know its a good dizzy. I got it from a guy at tpis a while back. DUI cap. https://www.summitracing.com/parts/crn-99600-1
I was just looking at the wide bands. There is the dual one that pops up when I log onto this site. Not sure what one to get. Lots of reviews. I will def be getting one tho.
Re: 84 Z28 build and lookin for info on 383 stroker.
Yes. Standard GM dipstick, driver's side.
As for the vacuum advance kit, that's the one I have. It allows for both the amount of advance as well as the set point (Inches of vacuum needed to bring on the advance). It's a wonderful tuning aid and while it's not a WOT throttle timing tool for the drag racer, it's the best thing us carb guys can do to our engines in terms of driveability and economy. For what it's worth, with mine dialed in with my old 274 cam, idle timing was 30 degrees and as much as 50 degrees at part throttle cruise. It lowered engine idle temperatures, improved throttle response and overall performance.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
I'd like to know the builder's logic behind that.
You may be interested in that paper I posted a link to as well. Maybe a few builders too.
Don't get me wrong, I'm not about to argue with any experts but some of these builders are far from that category.
The engine builders I've dealt with pretty much all told me no synthetic until 6k miles and they said that is to make certain that the rings are good and seated. Damn you Skinny, I was up until 1am reading that article, man there was a metric **** load of info in there; thanks for posting the link.
Last edited by MSgt Luttrell; 08-01-2016 at 12:50 AM.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
For what it's worth, with mine dialed in with my old 274 cam, idle timing was 30 degrees and as much as 50 degrees at part throttle cruise. It lowered engine idle temperatures, improved throttle response and overall performance.
With my current set up the sweet spot is 14 degrees of initial timing and 34 degrees at 3500 rpms; it also runs better with the vacuum advance disconnected. During break in I was experiencing spark plug (Champion 792) fouling during cold starts from time to time, they would always start firing again as soon as some heat built up in the engine. After double checking the carburetor tune, what I did to remedy it was to regap the spark plugs down from 0.45 to 0.35. This completely took care of the problem and the spark plugs now play nice during cold starts.
I believe what was happening, was the combination of cold plugs, big carb, camshaft and fairly high compression was causing flame blow out during cold starts, because each time it happened I pulled and inspected the plugs and they always looked fine, except for being a little wet with gas. Amazing how something as minor as 0.10" on a spark plug gap can make all the difference in the world.
Last edited by MSgt Luttrell; 08-01-2016 at 06:55 PM.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by MSgt Luttrell
The engine builders I've dealt with pretty much all told me no synthetic until 6k miles and they said that is to make certain that the rings are good and seated. Damn you Skinny, I was up until 1am reading that article, man there was a metric **** load of info in there; thanks for posting the link.
Re: 84 Z28 build and lookin for info on 383 stroker.
I hope you both enjoyed it.
One part of this hobby I really like is the tech. There's always something new. I apologize for keeping the two of you up past your bedtimes.
That said, and this applies to you MSgt, I have another paper on vacuum advance. I would bet that with your vacuum advance connected and properly tuned, you will be suitably impressed with the difference in your engine's characteristics. It has nothing to do with WOT and your 34 degrees total with the pedal pinned won't change . Your part throttle response however will be noticeably improved. As will your fuel economy. Now I'll qualify that statement by saying this is assuming your engine isn't on the ragged edge of detonation and compression as it is but I would be surprised if it is. It is a crate engine and Blueprint wouldn't sell something that has marginal streetability.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
I hope you both enjoyed it.
One part of this hobby I really like is the tech. There's always something new. I apologize for keeping the two of you up past your bedtimes.
That said, and this applies to you MSgt, I have another paper on vacuum advance. I would bet that with your vacuum advance connected and properly tuned, you will be suitably impressed with the difference in your engine's characteristics. It has nothing to do with WOT and your 34 degrees total with the pedal pinned won't change . Your part throttle response however will be noticeably improved. As will your fuel economy. Now I'll qualify that statement by saying this is assuming your engine isn't on the ragged edge of detonation and compression as it is but I would be surprised if it is. It is a crate engine and Blueprint wouldn't sell something that has marginal streetability.
Sure, post up the link, I'm a techy type of guy too, I'm a retired USAF aircraft mechanic and have turned wrenches all my life.
Re: 84 Z28 build and lookin for info on 383 stroker.
We sound to be of similar vintage MSgt. I'm sure you'll appreciate the article. At one time it was available to the general public however I've found now that the website has been turned into a registered forum of some sort. I can print out the article (hopefully) and post it here.
The link is below. Perhaps your luck will be different than mine. (I'm not home for a couple of days and won't be able to access my "archives" until then. )
I'm pretty sure the link is closed.
If you want to send me your e-mail (via PM) I can send you a word document of the text (although the graphics are missing). In the meantime, I'm going to try and register and make the link available.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
I hope you both enjoyed it.
One part of this hobby I really like is the tech. There's always something new. I apologize for keeping the two of you up past your bedtimes.
That said, and this applies to you MSgt, I have another paper on vacuum advance. I would bet that with your vacuum advance connected and properly tuned, you will be suitably impressed with the difference in your engine's characteristics. It has nothing to do with WOT and your 34 degrees total with the pedal pinned won't change . Your part throttle response however will be noticeably improved. As will your fuel economy. Now I'll qualify that statement by saying this is assuming your engine isn't on the ragged edge of detonation and compression as it is but I would be surprised if it is. It is a crate engine and Blueprint wouldn't sell something that has marginal streetability.
Just thought I'd share this...... read a few posts down..
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by skinny z
That said, and this applies to you MSgt, I have another paper on vacuum advance. I would bet that with your vacuum advance connected and properly tuned, you will be suitably impressed with the difference in your engine's characteristics. It has nothing to do with WOT and your 34 degrees total with the pedal pinned won't change .
I had some free time this morning so I decide to experiment with the vacuum advance with the engine stone cold. So I decided that I'd try running it connected to manifold vacuum instead of ported, to see if it would help smooth out the cold starts somewhat. I was pleasantly surprised that it did smooth out the cold start some, I did have to lower the idle screw some as it bumped the idle up by around 400 rpms, but it runs strong and doesn't seem to have any down falls so far at any rpm.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by MSgt Luttrell
I had some free time this morning so I decide to experiment with the vacuum advance with the engine stone cold. So I decided that I'd try running it connected to manifold vacuum instead of ported, to see if it would help smooth out the cold starts somewhat. I was pleasantly surprised that it did smooth out the cold start some, I did have to lower the idle screw some as it bumped the idle up by around 400 rpms, but it runs strong and doesn't seem to have any down falls so far at any rpm.
Exactly the result I would expect.
Ported vacuum advance has no business on any vehicle, unless you just want to keep it "factory original" and showcase the mis-guided decisions that were made back in those days!
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by [I
MS[/I]gt Luttrell;6065385]I had some free time this morning so I decide to experiment with the vacuum advance with the engine stone cold. So I decided that I'd try running it connected to manifold vacuum instead of ported, to see if it would help smooth out the cold starts somewhat. I was pleasantly surprised that it did smooth out the cold start some, I did have to lower the idle screw some as it bumped the idle up by around 400 rpms, but it runs strong and doesn't seem to have any down falls so far at any rpm.
Originally Posted by 86LG4Bird
Exactly the result I would expect.
Ported vacuum advance has no business on any vehicle, unless you just want to keep it "factory original" and showcase the mis-guided decisions that were made back in those days!
It gets better too once you can get it dialed in exactly.
There's a common failing among the would be vacuum tuners and that's not knowing what the can is doing and when. I use a handheld vacuum pump, a tach and timing light. If the vacuum is adjusted so that it's onset point is right at or near the idle vacuum, you may find that the engine will hunt up and down or the idle will vary from one time to the next. It's important to get the full vacuum advance in a couple of inches below idle vacuum. Then you can tune with the total available. 45 degrees of advance at cruise isn't unreasonable.
I couldn't agree with you more 86. I'm having this struggle now with a friend's car. A nice resto mod 69 RS Camaro (convertible too) with original 350, a cam of some sort, intake and headers. I set the tune and move the vacuum to where it should be. Her mechanic, the guy as he knows his stuff, switches it back to ported. No explanation other than he says its wrong.
Anyway, yes, it's full manifold vacuum all the way.
My current project, heads and cam in my 355, now has my friends 288 cam in it. He was one of those guys that gave up on full manifold vacuum advance because he said it wouldn't run right. It'll be interesting to see if I get it to work as it should.
Re: 84 Z28 build and lookin for info on 383 stroker.
Hey Skinny, thanks for the article, it backs up exactly what I saw this morning when I hooked the vacuum advance up to manifold vacuum. The cold start idle is much smoother and I now feel that it won't cause me much trouble this winter. The off idle throttle response is better and after taking it for a shake down cruise the idle is dead on every time and there is no surging at cruise or part throttle. I'll double check to see exactly where the timing is coming in with a vacuum gauge and pump in the near future, but it feels dead on, with no stumbles or flat spots what so ever. It even seems to run a few degrees cooler than it has been.
Re: 84 Z28 build and lookin for info on 383 stroker.
Excellent.
Yes, the cooler temps come from the earlier burn. There's more heat pushing the piston down and less out the headers. I bet there's a few points in MPG too. Especially cruise.
I'm especially interested in what you'll find regarding timing and such. I've got a few curves on file and I like to see how they compare. Not many people are doing this stuff these days.
Re: 84 Z28 build and lookin for info on 383 stroker.
Originally Posted by -=Z28=-
Nice MSgt. Ive thought about something like that. On a scale 10 - 1, how bad is the resonance in the car? I'm planning on hitting up the local exhaust shops to see if I cant dig through their bin of exhaust leftovers, mainly for angles, etc, to ease my installation. Otherwise I will just order a kit for angles and bends. But def fabing my own set-up.
Thanks for posting your build and sharing exhaust pics.
I finally got around to posting a short video of my car idling with the exhaust system I'm running; bare in mind it's recorded on my crappy phone.
Re: 84 Z28 build and lookin for info on 383 stroker.
Nice. Sounds good on that crappy phone. Starts right up too. Man I can wait.....
Some updates, Got some more parts today. I believe I have everything now to build the engine.
Talked to machinist and everything is ready. Going Monday to get it. So The plan is this weekend prep block, chase threads etc, file fit rings and just get block ready for next weekend. Hope to get it all built by next Sunday. Dyno guy is going to be at the B.I.R so dyno will have to wait till the 27th or so. Gives me a few weeks to get everything together.
Skinny, Scroll down on that link and read more. I googled that guy and there sure is a lot of controversy of weather or not his testing procedures are accurate to the claims he makes. Not saying he is wrong, just on every forum he posts that, which is many, is never backed with what he claims. Anyways......
Thanks again guys for the guidance. Will keep ya all updated.
Re: 84 Z28 build and lookin for info on 383 stroker.
I appreciate that there will always be naysayers. Such is the nature of publishing any kind of paper. That said, from what I read in his article, (not what others had to say about it), I'm certain that his recommendations on engine oils are based on science. He explained his procedure thoroughly enough I thought although he doesn't necessarily explain himself all that well. And he did get endorsements from others in the industry which he mentions.
Take what you want from it I suppose. I will admit, that if I were still in need of oil that I thought needed a supplement ( zinc, ZDDP, etc) I would probably use his testing as guidance and continue to research. As it is, since I've gone the electric fuel pump route and no longer have any flat tappet/fuel pump pushrod/cam interface, my selections is easy. His testing notwithstanding, the Quaker State or Mobil 1 synthetics are quality oils just the same.
I'll look a little further into this guy too. I'll check out any links you care to toss out.
Re: 84 Z28 build and lookin for info on 383 stroker.
Block is all prepped, threads chased, and thoroughly washed with hot soapy water.
I didnt get the rings filed as I got a late start today. Tomorrow I plan to go get my parts from the machinist and Tuesday after work start to file the rings and go through some other small things so I can start to assemble the short block. Getting closer.
Re: 84 Z28 build and lookin for info on 383 stroker.
Update, I got all my stuff from the machinist. Man he did a great job. He opened the bottom angle/throat on the heads, fixed the seat run out, guides and touched the seats. Looks very nice compared to stock dart grind/angles. Nice fresh mill job too now that they are 66cc's.
He had to but 2 pieces of heavy metal into the crank. one on either side. That stuff isnt cheep. 2 slugs were almost 100 bucks. But it came out really nice.
Got the Molnar rods and he pressed my pistons off my old rods.
I am so happy with his work and it was a really fair price. I actually expected it to cost more.
Re: 84 Z28 build and lookin for info on 383 stroker.
MSgt, I know!! I have a few things, check wrist pin clearances, Lifter bore clearances, clean up pistons, Still have to file rings. I'm going to do another final wash too just to make sure. By next weekend I hope to have her together.
skinny z, Couldnt of said it any better. Again, both of you and Orr, Thank you so very much. It is coming together here. Cant wait! I want to dot the "I's" and cross them "T's" during assembly. I dont want there to be any issues cause I skimped out now. No, I didnt have them flowed but it's gotta be better now. Has to be. The seat runout was .009 on some of the seats. Now they are .0005. Seats look beautiful and will seal great I'm sure. The transition from angle to angle is WAY better.
07-22-2016, 09:04 PM
