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Old 01-22-2004, 08:41 PM
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327 -Vs- 350

Hey hows everyone doing? Excellent good to hear, nuff small talk. Many a people have said told me that a 327 can hit much higher RPM's more easily then the Good ol' 350(A God among engines). They tell me this when i talk about swapping out my 68 corvette 327 for a 350. When I ask how or why it can, no one can give me a straight out answer, and I can't find the answer any where else, so why not ask you Engine Guru's. Well any help would be greatly appreciated! Thanks in advance to anyone that can give me a lil insight!

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Old 01-22-2004, 08:48 PM
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shorter stroke I believe is the answer with the 327
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Old 01-22-2004, 09:19 PM
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I believe that you can rev 7 grand out of a 350 its only .23 inches longer on the 350, and it puts out alot more horespower, and you can use the bigger valve heads and and all in all its for the best.

thad
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Old 01-22-2004, 09:33 PM
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With all other things being equal----the 327 will rev higher (short stroke)----the 350 will make more torque (more cubes-longer stroke). Both are great engines and respond well to performance upgrades! Either engine should move a 68' vette down the road just fine! I would not swap a good 327 out for a 350 but that is my opinion! You should decide what your needs are and move in that direction! If maximum performance is your goal, then the new 572" big block engine is the only way to go! If having fun is your goal, the 327 can produce 400 streetable H.P. --- that sounds like fun, RIGHT??
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Old 01-22-2004, 11:23 PM
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I think that 99% of those "high reving" 327s that people are always talking about being better than a 350 are total BS.

Unless you have an absolutely unstreetable engine, that lives exclusively above 7,500 RPMs, you are just loosing the extra torque and hp that you could have had with the extra cubes of a 350.
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Old 01-22-2004, 11:42 PM
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my point exactly more cubes the better the 350 is the way to go...
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Old 01-22-2004, 11:52 PM
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The 327 is a great engine and that's why people are still talking about them, so was the 302, but there is a reason they were replaced. The 350 is every bit as nice as a 327 (if not even better). It's like anything else, once it becomes a "legend" you will hear all kinds of stories about it.

True the 327 does RPM good (slightly better than the 350, all things being equal), you will need those extra RPM's to do the same thing the 350 is doing at a slightly lower RPM. I am not bashing a 327, as mentioned above, you can make more than enough power with a 327 for the street. Put a 327 in a light car and you have the recipe for fun. It is one of those engines that was basically the king (of small blocks) at the time they were out.


Oh yeah the reason they like to rev is the shorter stroke.

Royce
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Old 01-23-2004, 04:57 AM
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a 350 will, all things being equal, produce more power than a 327, simply because the displacement is larger. Since the bore is the same, and you are going to be reusing your block. why dont you install a 383 rotating assembly. I believe you should always build the biggest displacement engine you can afford to complete (unless yoy are limited by some sanctioning body) but with the price of a 383 rotating assembly, compaired to what a 350 crank and pistons cost you should either go 383, or stick with what you've got. you should get a 20 percent increase in power and tourque from the upgrade. also the bigger displacement engine will idle better with a bigger cam.
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Old 01-23-2004, 12:44 PM
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A simple truth of Hot Rodding is: If you are going for The Fastest Car In Town---By all means build the biggest engine that you can possibly afford! (and don't forget lots of bottled H.P.) But, if you simply want a hot street car, there are many engines that will fill the order (not just the norm 350--383 combos). 283's ,302's, 327's all are great engines to build up and have fun with! And since you already own a 327, why swap it out? I guess what I'm saying is, don't limit choices just because you can get a few more horses from a few more inches! The goal of going for Max. H.P. on a street driven car has ended in many undriveable, overheating, lurching, headache hot rods!
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Old 01-23-2004, 12:56 PM
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not to be a whore here, but I have an 88' 350 block but I also just had a perfict 327 w/ brand new forged steel crank given to me. (also just the block.) Both blocks requires the same amount of work. the finnished producxt will go in a standard cab short bed s-10. With both being built the same, which is the one to go with ??? Fuel milage is also a concern.
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Old 01-23-2004, 02:00 PM
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i love 327's for what they are and were. they are plenty of engine for most of us.
but i also believe a 327 doesn't give much room for boring and increasing the mass, like a good 'ol 350.

you have much more ability to grow w/ 350.
that being said, i'd leave the 327 in the vette. it's a classic. everyone has a 350, but not too many 327's any more!
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Old 01-23-2004, 03:26 PM
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The 327 can be bored out just as far as any 350 and farther than most of the later 350's. Although its hard to say anything bad about the 327 (it was a great engine) I think building a 350 is a better choice 99% or the time. the 327 only advantage is that because of the shorter stroke the piston speeds are slower for a given rpm that a 350, this how ever is only a factor if you planing to rev it to the moon.
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Old 01-23-2004, 08:10 PM
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Scott, if the '88 block is a roller block, you could use a hydraulic roller cam, which might yield better power & fuel economy.
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Old 01-23-2004, 08:45 PM
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I think if the #s match on the 327,+ the Vette,
That would be My Choice........
If Not,
Then 383 it Is........
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Old 01-23-2004, 09:11 PM
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