Has anyone actually tried 305 Heads on a 350 block
03-18-2013, 11:00 PM
#101
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Re: Has anyone actually tried 305 Heads on a 350 block
Might I suggest you re-read my post and the changes I am suggesting.
03-19-2013, 01:18 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
To eliminate any further doubt about me and the advise being given this is my personal shop.
The race shop/business is at a separate location.
The race shop/business is at a separate location.
03-19-2013, 02:36 AM
#103
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Re: Has anyone actually tried 305 Heads on a 350 block
i mean i am happy with how my engine runs now i was just wondering the improvement from a head upgrade and with my sub par lift numbers on my cam, and limited rpm range there isnt too much availability for gains on my motor, and 180cc heads? i think thats overkill my friend, atleast for what im looking for, im looking for low end response, not top end drag racing i think were in different worlds here my friend, did the factory heads reason being, i want a motor with low end grunt, and at a cheap cost, cost was nothing but my time and a little machine work.
03-19-2013, 08:50 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
It isn't as much the intake cc's as it is it's shape and cross section that matters.And a aftermarket casting that is thick enough where you can gain the grunt by working the exhaust port.
We refuse to build any flat tappet cams anymore for the reason that goes beyond just the reliability issues.The roller cams have that much better cam profiles making much easier to tailor build a power curve as well.That isn't all just top end hp.
Although the topic here is use of a 305 head,the subject does lend it's self to a discussion about how the compression+the cam+the heads+the exhaust have to be matched parts system.
We refuse to build any flat tappet cams anymore for the reason that goes beyond just the reliability issues.The roller cams have that much better cam profiles making much easier to tailor build a power curve as well.That isn't all just top end hp.
Although the topic here is use of a 305 head,the subject does lend it's self to a discussion about how the compression+the cam+the heads+the exhaust have to be matched parts system.
Last edited by 1gary; 03-19-2013 at 09:04 AM.
03-19-2013, 11:38 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
I don't work for a race team in whatever capacity you claim to, or is it own now? Either way, I'm sure your nitroused Big Block Dragster is fast, and your garage is lovely, and I'm sure if those doors were open in the pic we would see all of your famous huge dollar 2000hp motors on skids waiting to go out all over the world to happy customers. How is any of that relivant to anything in this thread? Why was your opinion more "correct" then mine or any of the other guys who have told you it works?
Here's why I replied........that's my junk, that I'm putting 305 heads on in these pics. And was very succsessfull, and very happy with the performance. So really..... go hold court with someone who cares, because you just cemented how far out of touch you are with reality.
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03-19-2013, 11:54 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
And some more actual real world cars.....not someone else's dragster....
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03-19-2013, 11:59 AM
#108
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Re: Has anyone actually tried 305 Heads on a 350 block
There's my relivence......real world, budget stuff that anyone can reproduce.
They may not have been perfect, or even nice lol....but they were all mine, all built by me (with the exception on the Panel and the TA cause one I flipped to get the other just recently) and all done on a real world budget. The trans am is coming apart for heads, roller rockers, intake and Carb change as soon as parts arrive.
No race cars or self profesed racing team owner.....just that little garage and some time.
They may not have been perfect, or even nice lol....but they were all mine, all built by me (with the exception on the Panel and the TA cause one I flipped to get the other just recently) and all done on a real world budget. The trans am is coming apart for heads, roller rockers, intake and Carb change as soon as parts arrive.
No race cars or self profesed racing team owner.....just that little garage and some time.
Last edited by bygddy; 03-19-2013 at 12:31 PM.
03-19-2013, 12:38 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
Mines bigger then yours!
Boys, you know what they say about fighting on the internet,
you're both making yourselves look like fools.
Boys, you know what they say about fighting on the internet,
you're both making yourselves look like fools.
03-19-2013, 12:48 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
There's my relivence......real world, budget stuff that anyone can reproduce.
They may not have been perfect, or even nice lol....but they were all mine, all built by me (with the exception on the Panel and the TA cause one I flipped to get the other just recently) and all done on a real world budget. The trans am is coming apart for heads, roller rockers, intake and Carb change as soon as parts arrive.
No race cars or self profesed racing team owner.....just that little garage and some time.
They may not have been perfect, or even nice lol....but they were all mine, all built by me (with the exception on the Panel and the TA cause one I flipped to get the other just recently) and all done on a real world budget. The trans am is coming apart for heads, roller rockers, intake and Carb change as soon as parts arrive.
No race cars or self profesed racing team owner.....just that little garage and some time.
Although the topic here is use of a 305 head,the subject does lend it's self to a discussion about how the compression+the cam+the heads+the exhaust have to be matched parts system.
03-19-2013, 01:00 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
03-19-2013, 03:48 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
gary as much as u know, we all know a smaller port is gonna build better low end torque at a lower starting point than big intake ports ask anyone, im not trying to argue but we all know this, 180cc and up is for a little over 6 k rpms and a decent starting point of torque yield around 2000 rpms and up. and also i built my engine for under a grand, i dont know many people that can build a 370ish horsepower motor for that cheap, but it all started with a complete 1973 350 i got outta my buddies truck for 50 bucks with a working holley when his family was moving to kentucky.
03-19-2013, 07:11 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
gary as much as u know, we all know a smaller port is gonna build better low end torque at a lower starting point than big intake ports ask anyone, im not trying to argue but we all know this, 180cc and up is for a little over 6 k rpms and a decent starting point of torque yield around 2000 rpms and up. and also i built my engine for under a grand, i dont know many people that can build a 370ish horsepower motor for that cheap, but it all started with a complete 1973 350 i got outta my buddies truck for 50 bucks with a working holley when his family was moving to kentucky.
I sure do wish that engines where that simple where a single question only involved a simple answer.We all know that isn't the case.
I've been through out this thread been trying to show that using a 305 isn't needed to spend wisely.That a number of methods can be used for not much or if at all more to get into aftermarket heads/parts.
I want to compliment/Thank You for the civil exchanges we have had.
03-19-2013, 08:30 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
haha no problem gary
03-19-2013, 08:31 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
but very true 305 heads done up on a 350 block can create a decent street motor. specially in the situation of myself where my stock motor was a 305 so i reused the heads
03-19-2013, 09:13 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
I agree that small runners do in part build torque.So does quench measurements set up correctly.A "general" rule of thumb formula is .5 X C.I = the ideal intake runner size.Of course cam/compression considerations taken into account.
I sure do wish that engines where that simple where a single question only involved a simple answer.We all know that isn't the case.
I've been through out this thread been trying to show that using a 305 isn't needed to spend wisely.That a number of methods can be used for not much or if at all more to get into aftermarket heads/parts.
I want to compliment/Thank You for the civil exchanges we have had.
I sure do wish that engines where that simple where a single question only involved a simple answer.We all know that isn't the case.
I've been through out this thread been trying to show that using a 305 isn't needed to spend wisely.That a number of methods can be used for not much or if at all more to get into aftermarket heads/parts.
I want to compliment/Thank You for the civil exchanges we have had.
Nuff said
Dave
03-19-2013, 09:17 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
03-19-2013, 11:01 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
Which is where I was at, had them given to me, and they just had new guides put in. I had springs, seals, and 194 intake valves laying around. For me, it made sense. And was lots of fun. That being said, if Pro-Filer ever gets off their asses and sends me my heads I paid for 5 weeks ago I will be even happier
03-19-2013, 11:33 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
The question was asked by the OP, and answered.....nothing more. Your a very stubborn man Gary.....and I concede....your a genius, and an award winning engine builder, and we should all consider ourselves lucky you share your infinite wisdom with us lowly mortals. Pls go forward in educating today's youth in proper techniques and exactly how they should be, the only absolute way, that they should be spending their hard earned money. I will simply enjoy driving my cars, making them faster and more fun without spending huge money so I can continue to have my nice comfortable lifestyle afforded to me and my family. Clearly....your way is best....
03-19-2013, 11:34 PM
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03-20-2013, 07:46 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
ill let u guys know how she runs waiting on my external trans cooler, 1700-2100 stall and then im slapping the trans in and see what kinda power it puts down on the pavement.
03-20-2013, 07:47 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
also anyone installed a th350 in a third gen? those kits from b&m are stupid i only used 3 pieces of their hardware not including the 2 plates, and a huge pain in the ars
03-20-2013, 07:54 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
I have... was a snap with the kit.
03-20-2013, 09:00 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
That it is, it made 600+ on 92 on the engine dyno. We finished wiring it for the most part at the end of last season. Still needs to install calipers, and bleed. We had it fired for a bit and it sounds so angry. Its buried in a collapsed tempo garage beside my house under 10ft of snow right now lol. Can't wait to get at it. The owner is going to flat black the car in the spring. Its actually a total pail with a stupid money drive train.....pretty funny. That motor was 10+k of garage art for a few years.....just oiled and sitting on an engine stand in his living room. That car had a 540 that made 867hp in it. Decided it was too much race car and not enough street car, so that got pulled and sold to a boat guy, then the blower motor went in. Guy is kinda mental (buddy of mine) and likely spent 75k on the car when he did the big block, he drove it home, and decided it was scary, so it sat in his lane way for 6 or 7 years until I finally convinced him to put the blower motor in. Rear window was missing, had a pile of snow in it every winter, the car is completely thrashed.....so he just wants to drive it now.....hard.....doesn't care how it looks......most expensive beater I know of.....
My yellow vette was pulled from his side yard after sitting there for 5+ years, put the glass L88 hood on it, 305 heads, small cam, homemade sidepipes, new brakes all around, some guages and a pistol grip Hurst shifter. Had just shy of 2800$ in the car, straight traded it for the 1940 panel van in the next pic, spent zero on that, then straight traded for the black TA. Which isn't going anywhere.......I have the nicest 3rd Gen for under 3k in the entire world lol.......
My yellow vette was pulled from his side yard after sitting there for 5+ years, put the glass L88 hood on it, 305 heads, small cam, homemade sidepipes, new brakes all around, some guages and a pistol grip Hurst shifter. Had just shy of 2800$ in the car, straight traded it for the 1940 panel van in the next pic, spent zero on that, then straight traded for the black TA. Which isn't going anywhere.......I have the nicest 3rd Gen for under 3k in the entire world lol.......
03-20-2013, 11:58 AM
#125
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Re: Has anyone actually tried 305 Heads on a 350 block
Bgddy-the RED engine picture was 4 seasons ago and that ended beening the back-up engine.It's a 565 and was replaced two seasons ago with a 632 both on Alky.Ran 4.56@150 in the 1/8 on the bottle conservatively .002 in the middle of the lap.Now both have been sold off as the RED for a new RED that is 100 lbs lighter and a smaller more hp 605.
But none of that influences my opinions like our parts sales/engine building where a bulk of that is either for street/strip cars or cruiser Hot Rods.
But none of that influences my opinions like our parts sales/engine building where a bulk of that is either for street/strip cars or cruiser Hot Rods.
Last edited by 1gary; 03-20-2013 at 05:59 PM.
08-19-2015, 03:46 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
I have a 87 s-10 2wd blazer that a put 4 bolt main 350 in it out of a 74 chevy and it wasn't bad but then I put 305 heads on it and like the others have said it gave it some pretty good low end but into the high rpms it ran out of power well what I'm getting to is I put some 202 camel hump heads on it and it gave it more low end then the 305s did and I was pulling about 6600rpms toped out u should really try the camel humps there hard to come by but very worth it in my opinion.
09-01-2015, 12:27 AM
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Re: Has anyone actually tried 305 Heads on a 350 block
I have a 87 s-10 2wd blazer that a put 4 bolt main 350 in it out of a 74 chevy and it wasn't bad but then I put 305 heads on it and like the others have said it gave it some pretty good low end but into the high rpms it ran out of power well what I'm getting to is I put some 202 camel hump heads on it and it gave it more low end then the 305s did and I was pulling about 6600rpms toped out u should really try the camel humps there hard to come by but very worth it in my opinion.
03-10-2019, 05:58 PM
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Re: Has anyone actually tried 305 Heads on a 350 block
I have to respectfully disagree, if Davinci didn't pick up that crayon, the Mona Lisa wouldn't have been painted. If Chad hadn't picked up that die grinder, he wouldn't be where he is now. Nobody said to go buy a set of 882's and hack the fk out of them. They are garbage stock, and likely worse cut up by some kid with a cutting bit. But were talking about 305 heads for crying out loud, that can be had for couch change. And you have to start somewhere.....I took a set, and spent a bunch of time reading, and learning as much as I could, then I went to town on them. My pile of junk vette went 16.20's stock according to a g-tec, then I installed a tiny lunati cam, Shorty headers, and a performer intake, and yes my junk, home ported 416 heads, NO OTHER CHANGES.....g-tec said high 12's.....nope, nobody is arguing about the accuracy...or non accuracy of a g-tec.....but a 3 and a half second gain.....for couch change, and some time...seems pretty substantial....and I beat it, hard, daily.....overheated it a few times, over revved it many times, and its still running, and still quick as hell......can I port heads? Jesus no...I'm a hack at best.....but I read everything I could, and tried, my machinist liked my first set, and loved the last 2 I did....as did my buddies using them....i didn't charge anything, cause its fun, trying to shape, see where I can make improvements, its neat. Would I cut a "good" set of heads....for someone else, no way...for me....maybe....but I'm an idiot sometimes.....my point is, everyone starts somewhere, and what better place then a set of junk heads that most people disregard, and on a budget and just want to be reasonably quick.....we all started somewhere....and unless your born with a silver spoon in your mouth, it wasn't with AFR heads.
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