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Old 12-24-2008, 10:10 PM
Old'n'young
 
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chevy heads

can you just bolt on power pack heads for a 283 - 327 on a 2 bolt 350? or would you have a **** load of problems?

thanks

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Old 12-25-2008, 07:00 AM
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1.21 giga-watts???!!!!
 
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Please do yourself a favor and buy a good book on how to rebuild and/or hot rod chevy engines. David Vizard has an excellent rebuild book and John Lingenfelter has an excellent performance book.
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Old 12-25-2008, 07:33 AM
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yeah you can bolt them on and they`ll work. However, they don`t have accessory holes so you`d have to figure up a new way to mount the alternator. The small chamber would raise a 350 smog engines compression but the small runner and valve size would choke it to death. In other words, it would have killer low end torque, but would fall flat on it`s face by 3000 rpm. These heads have 137cc runners compared to a typical 350`s runner size of 160cc. the valves are 1.71 intake which is the smallest valve GM ever used in the small block line.
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Old 12-25-2008, 09:23 AM
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CoolRocknDaddy..

Here's a good avitar for you to use.



~Scott.


Btw... if I were on a budjet and looking for a good cheap sbc head go with the Vortec from GM. Great flow... cheap on cost.
~Scott

Last edited by UR50SLO; 12-26-2008 at 08:05 AM.
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Old 12-26-2008, 07:17 AM
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1.21 giga-watts???!!!!
 
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UR,

thanks alot! That is perfect.
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Old 12-28-2008, 03:11 PM
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I wouldnt do it. I think that 62cc heads would be about right compression wise for a 350. If we still had leaded gas it would work better.
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Old 12-28-2008, 03:27 PM
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If you had 1.94" In Valves installed and did a Little Porting . And you don't have A/C you could still use these heads if you make some brackets as needed . They will out Perform 305 Heads . The Power Pack Heads that I have seen have bigger Ports then 305 Heads .
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Old 12-28-2008, 04:06 PM
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I donīt know what it would cost you to get the heads souped up, but if itīs anywere near the price in Sweden... Besides, far to many old heads are cracked and that may come as a nasty surprise when you start it up.
To answer the question in short: Why would you? Besides unless you rub dished pistons 62cc chamber may put you close to what pump gas can take.
Get a set of new cast heads with 2.02/1.60 valves for lowest cost. Most heads will flow as/or better than old fulies and they would put out some 360-370hp with a good cam and a 750 or so carb.
I ran 13.51/105 on the 1/4 with regular street tires and a daily driver ī68 Camaro. 355, hump heads, hydraulic cam and 750 carb. 3.42 rear and 3000 rpm stall
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