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chevy 305 head 350 swap help? stupid?

 
chrishd2008
I love my Chevy Chevette!
Posts: 2
Joined: 01/13
Posted: 01/31/13 11:12 PM

I have a 85 camaro with a 305tpi I built a 350 bored 30 over with flat top pistons each piston has 4 valve reliefs  I believe they are silvolite? I took the 305 tpi heads and put them on the 350  and the cam is stock also, so do I have 58 cc heads? and if so what would be my compression ratio now? im getting a chip burned and the guy needs to know this before he burns and can any one give me some tips on this? im just looking for a fast sunday driver  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 02/01/13 12:27 AM

You'll have to post the casting numbers before anybody can say for sure what heads you have.

http://www.kb-silvolite.com/calc.php?action=comp

This link is to a CR calculator. Notice that several measurements are needed to acurately calculate CR.  
68scott385 68scott385 68scott385

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busterrm2013
V-6 Camaros rule!
Posts: 46
Joined: 07/13
Posted: 07/10/13 12:42 AM

CR is going to be between 10.45 and 10.70 if your quench is .042  

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busterrm2013
V-6 Camaros rule!
Posts: 46
Joined: 07/13
Posted: 07/10/13 12:42 AM

CR is going to be between 10.45 and 10.70 if your quench is .042  

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Dave632
I mow my lawn and find Chevys
Posts: 2253
Joined: 07/08
Posted: 07/10/13 06:51 PM

If I remember right most of the guys think the 305 head is good for a door stopper. I have never used one for any purpose so check with the guys who know about that head.  
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skyeking
I mow my lawn and find Chevys
Posts: 2738
Joined: 08/09
Posted: 07/11/13 05:34 PM

Hi there,
If the heads have 1.84" inlets then have the throats
behind the valve seats ported on the exhaust valves as
a priority
If not then look elsewhere for value.  Good luck.  
skyeking

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