327 question - Team Camaro Tech
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post #1 of 6 (permalink) Old May 10th, 16, 03:13 AM Thread Starter
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Cory
 
Join Date: Jul 2014
Location: wisconsin
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327 question

im planning a to use a 327 i have in my 68. my question is, the i have a set of afr 195s i could use. this build is going to be kept mild. are these heads going to be too big for a 327? i realize that heads like that work best with hyd roller and lots of lift, but since i have the set set already i just need to swap springs. id like to hear from guys that built 327s. mild deal im thinking z-20 isky solid flat tappet, and 600 edelbrock carb with headers. thanks in advance.
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post #2 of 6 (permalink) Old May 10th, 16, 05:21 AM
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Dave
 
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Re: 327 question

I would take out your 327's cast large journal crank and replace it with one from SCAT that will turn your 327 into a 383 with a 0.030 over bore and eight new 383 pistons. Solves any worry problem about being over sized. That would be the ideal size for those heads on the street.

And yes you are going to need a roller cam kit as any added spring pressure will cause your cam to fail. Your old valve springs are sagging just like the springs that hold up the Camaro with age. The newer heads have stiffer springs to control the added weight of larger valves and heavier roller tappets.

Big Dave
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post #3 of 6 (permalink) Old May 10th, 16, 12:48 PM Thread Starter
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Cory
 
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Re: 327 question

the 327 i have is a small journal 1966 ... this is just a going to be a street cruiser convertable. a mild engine is all i need . i got the 327 for free. i work with a very small budget and many times i need to use parts i have already. changing the valve springs is no big deal for me i can do that.
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post #4 of 6 (permalink) Old May 10th, 16, 12:58 PM Thread Starter
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Cory
 
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Re: 327 question

i forgot 3.73 gear with 4 speed. the engine is rebuilt with only a few miles on it. i just want to make sure putting the 195s on it isnt a mistake. i dont want it to be a dog on the low end. a small id be ok with. if its a bad idea i would just keep the stock style heads that are on it.
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post #5 of 6 (permalink) Old May 10th, 16, 01:21 PM
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Tom
 
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Re: 327 question

For comparison, the runners on the 275hp and up #462 heads on 327's were on the order of 155cc. Most 327 builds I've read about don't use above 180cc and the vortec heads at 170cc seem to be excellent for street 327's. I personally wouldn't go with the 195's. What pistons are in it, cam specs and combustion chamber volume of the heads will weigh into what matches best.

'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.

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post #6 of 6 (permalink) Old May 12th, 16, 06:29 AM
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Bill
 
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Re: 327 question

I like the 383 idea. The 195's are too much for the 327 you are planning. Hydraulic cam/lifters instead of solids.
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