|
MY 383 build going for tens now !! 4 Attachment(s) https://cimg5.ibsrv.net/gimg/www.thi...fb985b5584.jpg precious https://cimg6.ibsrv.net/gimg/www.thi...45abb3db21.jpg crank is in https://cimg7.ibsrv.net/gimg/www.thi...350ca413f1.jpg nice view of cam and cylinder wall https://cimg8.ibsrv.net/gimg/www.thi...844670daaa.jpg pistons baby https://cimg9.ibsrv.net/gimg/www.thi...1b943c7f2c.jpg all most a short block |
Re: MY 383 build going for tens now !! Who did the cloverleaf in the top of your intake? I have something very similar from chad Speier. What is the head combo? Looks like it will be a runner! |
Re: MY 383 build going for tens now !! Thanks The heads were Cast by ALLPRO running 2.08 -1.65 titanium valves the custom port work on the Heads and intake were done by a good friend of mine from Texas that went to SAM Tech few years back :driving::driving::driving: name is Rick |
Re: MY 383 build going for tens now !! Allpro makes some good castings! Do you have some flow numbers for them? Looks like dart block? |
Re: MY 383 build going for tens now !! I wish the block was a dart block much better foundation.. this is a 1975 truck Chevy sbc with Howards racing nodular main caps :doh::doh: flow numbers from all pro model 220 sp 23 degree heads done at 28" water cam lift + Intake,______Exhaust .500, + + 287.6, ______243.46 .600, + + 308,________ 250.39 .650, + + 312.75,______ xxxx .700, + + 314.15,______ 252.65 :thumbsup: |
Re: MY 383 build going for tens now !! Oh don't feel to man, we are running nines on a factory 76 block out of a school bus. That without turning it up much. They will take a lot as long as the tune up is right. Dart block will come in due time. Sounds like we have a very similar block. I had mine machined with Pro-Gram billet mains. Those are some good flow numbers. It should run well What does the rest of your valvetrain consist of? You going shaft rockers? After running shafts they are very nice! I really like mine so far. |
Re: MY 383 build going for tens now !!
Originally Posted by izcain
(Post 6206457)
Oh don't feel to man, we are running nines on a factory 76 block out of a school bus. That without turning it up much. They will take a lot as long as the tune up is right. Dart block will come in due time. Sounds like we have a very similar block. I had mine machined with Pro-Gram billet mains. Those are some good flow numbers. It should run well What does the rest of your valvetrain consist of? You going shaft rockers? After running shafts they are very nice! I really like mine so far. you can buy a good shaft mount around $1200 |
Re: MY 383 build going for tens now !! You can buy them better then that. Pm me and I can send you some contact info for Shelton bars at lgm development. He has some very nice shaft rocker setups for great prices. |
Re: MY 383 build going for tens now !! https://cimg4.ibsrv.net/gimg/www.thi...a09d89c18f.jpg pistons are in https://cimg6.ibsrv.net/gimg/www.thi...2bdeab3e96.jpg coming along now cam has been degreed https://cimg9.ibsrv.net/gimg/www.thi...e015988b6f.jpg nice pic of crank and rods Updates engine is getting close... by the way I am using Royal Purple assembly lube !!! :goodidea: |
Re: MY 383 build going for tens now !! what crank is that? Beautiful set up its going to run awesome Dont be so quick to abandon stock blocks they work great with great power, we race a 8500 rpm 355. They usually break when a rod lets go lol. |
Re: MY 383 build going for tens now !!
Originally Posted by Jacobaxeman
(Post 6206644)
what crank is that? Beautiful set up its going to run awesome Dont be so quick to abandon stock blocks they work great with great power, we race a 8500 rpm 355. They usually break when a rod lets go lol. Thanks for the vote of confidence.... :chevy: 8500 rpm you don't mess around .. The crank is a piece of work to say the least got it from crankshaft specialties back in the early 2000 had it sitting for years, Recently I had it checked by local machinist found it was under standard and not balanced properly got to pay for it twice :huh: :2cents: the stock block has hard block in it and will have all the passages o-ringed :goodidea: |
Re: MY 383 build going for tens now !! I have touched the 8200 limiter a couple of times. I don't like doing that though! lol:o |
Re: MY 383 build going for tens now !! https://cimg5.ibsrv.net/gimg/www.thi...61175f0793.jpg MORE ENGINE PORN !! these are going on the 383.... |
Re: MY 383 build going for tens now !! I use T&D myself. Comp Cams versions but still made by T&D. Either way, a shaft rocker is much better than a pedestal rocker. When I installed mine, it relocated the rocker directly over the tip of the valve. Doing so also moved my pushrods over and I had to modify the pushrod passage through the head so that they wouldn't hit the walls. I went from this with a stud girdle and tall valve covers and still needing a rocker cover spacer. http://www.hardtail.com/temp/rockers.jpg To this with shaft rockers and a low profile rocker cover. http://www.hardtail.com/pics/forum/588/rockers.jpg |
Re: MY 383 build going for tens now !! That is definitely the way to go!! I had stud girdles and all that stuff on my last engine.. Pain in the but.. I like your set up, clean simple get it done; did you have to go to off-set plungers in the lifters?? :goodjob: |
Re: MY 383 build going for tens now !! Actually, I was considering it but it's never recommended and not all the rockers would require an offset plunger. Only a couple of the pushrod holes through each head had to be modified. With aluminum heads, it's not hard to shave out some extra metal for the clearance. There's a lot of metal in these heads. The intake ports have sleeves inserted where the headbolts pass through since the porting goes out into head bolt area. It took a bit to get the stands all set up properly. The exhaust was pretty straight forward. The intakes needed a taller stand because of the longer valves plus I have lash caps. Once it was all set up, valve train geometry is as perfect as I can get it. Nice thing about shaft rockers is that you can unbolt them to change a valve spring then just bolt them back up without needing to recheck the lash. Shaft rockers is the way to go especially when your valve train is on the extreme side. My triple springs have an open pressure around 800 pounds. Seat pressure is around 300 pounds. Valve lift is .833/.809 so those rockers and springs get a lot of abuse at 7000+ rpm. Shaft rockers are just overkill for a street engine but if you have the money to throw at the engine, it sure won't hurt them. |
Re: MY 383 build going for tens now !! Shaft rockers is the way to go especially when your valve train is on the extreme side. My triple springs have an open pressure around 800 pounds. Seat pressure is around 300 pounds. Valve lift is .833/.809 so those rockers and springs get a lot of abuse at 7000+ rpm. |
Re: MY 383 build going for tens now !! https://cimg3.ibsrv.net/gimg/www.thi...7dae70f842.jpgwe are a short block now !! |
Re: MY 383 build going for tens now !! |
Re: MY 383 build going for tens now !! Looks great! I think i'm losing another #509 400ci block. Can't seem to keep cam bearings in it. Even had it fixed at Tim Wilkersons shop with his cnc equipment. Oh well, time for an aftermarket block. |
Re: MY 383 build going for tens now !!
Originally Posted by TTOP350
(Post 6251163)
Looks great! I think i'm losing another #509 400ci block. Can't seem to keep cam bearings in it. Even had it fixed at Tim Wilkersons shop with his cnc equipment. Oh well, time for an aftermarket block. |
Re: MY 383 build going for tens now !! |
Re: MY 383 build going for tens now !! https://cimg7.ibsrv.net/gimg/www.thi...38c6232ad1.jpg Ready for the DYNO Cell !! ALMOST !! |
Re: MY 383 build going for tens now !! https://cimg1.ibsrv.net/gimg/www.thi...855f8d4b7c.jpg I've the same timing cover bought primarily for the built in and adjustable thrust button. I'd also thought about using the access to get at the Hex-A-Just timing set but after setting the cam timing initially, I never went back. |
Re: MY 383 build going for tens now !!
Originally Posted by skinny z
(Post 6267122)
https://cimg1.ibsrv.net/gimg/www.thi...855f8d4b7c.jpg I've the same timing cover bought primarily for the built in and adjustable thrust button. I'd also thought about using the access to get at the Hex-A-Just timing set but after setting the cam timing initially, I never went back. |
Re: MY 383 build going for tens now !! https://cimg8.ibsrv.net/gimg/www.thi...14ed029931.jpg 614 horsepower 595 torque CONSERVATIVE TUNE !! https://cimg0.ibsrv.net/gimg/www.thi...540e94eceb.jpg 383 on the DYNO !! https://cimg6.ibsrv.net/gimg/www.thi...0331dbdfab.jpg DYNO DAY IS HERE !! |
Re: MY 383 build going for tens now !! Nice numbers. Who spec'd that cam? It seems it's rare to see a tight LSA of 106 but that's a desired target for a 383. Seems most just fall back to the standard 110 out a catalogue and consequently leave considerable performance behind. You can't argue with your results. |
Re: MY 383 build going for tens now !! Nice work! That should get it moving |
Re: MY 383 build going for tens now !!
Originally Posted by skinny z
(Post 6283902)
Nice numbers. Who spec'd that cam? It seems it's rare to see a tight LSA of 106 but that's a desired target for a 383. Seems most just fall back to the standard 110 out a catalogue and consequently leave considerable performance behind. You can't argue with your results. This cam has been sitting in my closet for many years waiting to be used !! |
Re: MY 383 build going for tens now !! Looks like it was an excellent choice. |
Re: MY 383 build going for tens now !! The HP gods are smiling from above giving him a high five on the cam choice! Great job on the build man that thing should move right out! |
| All times are GMT -5. The time now is 07:41 AM. |
© 2024 MH Sub I, LLC dba Internet Brands