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Old 07-27-2008, 11:32 PM
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327 SBC Build

I know that at one time during the sixties corvettes had a 327 small block in them that were rated at 375 horsepower. That is all I know and I would like to maybe build an engine to those specifications only I don't know where to find any of the specs I need. I need to know what cam, what heads, what intake ect... I would like an engine with enough power to have some fun, but that could also look somewhat original.
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Old 07-28-2008, 12:34 AM
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Those 375 hp motors were RPO L84, 11:1 compression ratio and used a Rochester mechanical fuel injection unit. I'm pretty sure you'd have to sell your house to buy one of those Rochester units now.
I'm thinkin' that the 365 hp units used two 4-bbl carbs and 11:1 c.r., so that might be doable today.

Google RPO L84
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Old 07-28-2008, 04:25 AM
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The 365 HP 327 was identical to the 375 HP except it used a a single Holly carb.
There was never a 2 X 4 barrel 327 from the factory.
JA
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Old 07-28-2008, 08:17 AM
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All small block chevy's look similar from the outside. So you could have a 434 small block in there and tell people it was a 305 and they would never know. (if it is internally balanced sometimes the external balancer gives it away)

There are much better and less expensive ways to get lots of power than building a factory 365 HP motor from the 60's

Heck I was at a car show last weekend and a guy had a 65 chevelle with a 500HP 383 that looked like it came that way stock. Just because he painted the intake and heads orange.

To the casual observer it looked stock until you took a closer look at the head and intake casting.

If you wanted to really fool folks and have a ton of power get a set of 2.02/1.60 camelbacks and an old weiand intake and put them on top of an internally balanced 383.

You would have more torque than you would know what to do with. I have fun everyday in a 65 skylark with a "no frills" 383 making 375 hp with 10:1 compression and it cost me a little over 2500 bucks to build.

I splash in a little race gas to keep the detonation at bay and it will smoke the 295/60's for half a block.
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Old 07-28-2008, 08:24 AM
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for get those old 327 specs. Build a 383 with a good set of heads and a roller cam and make 450hp and 500ftlbs of torque on pump gas. Or build it more mild and make 400hp and 450ftlbs and idle at 17inhg of vacuum.
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Old 07-28-2008, 08:30 AM
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Quote:
Originally Posted by johnnya
The 365 HP 327 was identical to the 375 HP except it used a a single Holly carb.
There was never a 2 X 4 barrel 327 from the factory.
JA
Thanks for the revision. I would have sworn that there was a 2-4bbl 327, but you're correct.
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