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Old 08-05-2004, 08:41 PM
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305/350 Frankenstein Project


I've lurked the forums for quite some time, I've even been tempted to post, but until now I've never had a specific need.

I was just given a 1977 Camaro sports coupe with a stock 305.
I have a wrecked 91 Chevy Siverado with a 5.7 liter TBI 350.
I have a lead on a free Edelbroch C-26 dual quad intake.
If I get the intake I'll spring for 2 Edelbroch performers or Q-Jets.

Here's my plan. I want a fun daily driver. The Camaro will never see the track, but I want to put some of the local ricers in their place. I plan to overhaul the core 350 from the Silverado with a stock rebuild kit, bolt on the 305 heads (60ci, I think) after a port polish and valve job, which will increase my compression, and install an appropriate cam. I'll be putting the factory AC, power stering etc, back on the car - daily driver, and replacing the shot 3-speed Camaro manual transmission with the Silverado's 700r4.

I believer the 700r4 will probably require different gearing and ajustment - TV cable, etc, and I plan to add a no-slip posi.

What I need to know - I already know I'm crazy (ask the wife).

What cam do I use?

Will the 305 heads even bolt to the newer block. I know the stock Silverado heads are different at the intake - canted center holes, but are the block bolt postions the same? I want to use the 305 heads more for the fact that the dual carb intake will not mount to the 91 heads, the compression is a bonus.

Will I have to modify the valve springs, pushrods, etc.?

Will the boost in compression blow the stock fitted pistons?

Anything else?

I'm sure I'm missing a lot. I'm a decent bolt-turner and can do minor fabrication - brakets and such, but nothing too fancy. The most delicate thing I'll try to do myself is port the heads, but not before I practice on some junkyard bones. I've got the time to take it slow and learn as I go - my boy has four years to go before he needs use of the S-10 and I need the Camaro ready to go. I'm at the beginning, still planning. The onlything set in stone is the lack of budget.

All advice will be greatly appreciated and or praised.

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Old 08-05-2004, 09:07 PM
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dont bother with the 305 heads, actually this topic has been beaten to death, yes they bolt on, & yes they increase compression....but they just dont flow, do yourself a favor & get some decent small chamber aftermarket heads. or use GM Vortec heads...actually, your 91 has Vortec heads on it I believe, theyll blow away the 305 heads.As far as the intake goes, it wont work with the Votec heads. Unless you want the 2 4 barrels for looks, Youd be better off from a reliabilty & performance stand point with a single 4 barrel.
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Old 08-05-2004, 09:29 PM
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search, search, search, search, search...
this topic has been beaten to death
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Old 08-05-2004, 09:32 PM
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91 heads would be TBI, not Vortec heads. Crappy for performance.

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