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305 with 350 heads

Old 01-18-2019, 11:38 AM
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305 with 350 heads

Hey y誕ll so I知 building a 305 and I知 gonna put 350 heads on it which I know will lower my compression but I値l get more power at the top end but my question is how do I get the compression to go up again.
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Old 01-18-2019, 01:12 PM
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Re: 305 with 350 heads

Put C4 vet aluminum heads on it or iron 305 vortec heads.
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Old 01-18-2019, 07:55 PM
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Re: 305 with 350 heads

Best way is, get a "bore kit" for that 305 block.
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Old 01-19-2019, 07:28 PM
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Re: 305 with 350 heads

Waiting in Ft Myers airport 7 hrs to ORD departure.
305 Bore kit LOL Good ol Sofa.
展ouldja just put a L31 350 in it!
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Old 01-20-2019, 07:59 PM
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Re: 305 with 350 heads

Thanks you guys, I am on a very small budget imdont
make very much money I知 just a tow truck driver. I bought the motor for $200 that痴 why I知 using the 305 for now. So
What is a cheap way to up my compression with the 350 heads
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Old 01-20-2019, 08:58 PM
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Re: 305 with 350 heads

If that is the route you are going to take, then use the thinnest head gasket possible.
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Old 01-20-2019, 09:04 PM
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Re: 305 with 350 heads

Originally Posted by NoEmissions84TA View Post
If that is the route you are going to take, then use the thinnest head gasket possible.
awesome thank you man
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Old 01-20-2019, 09:43 PM
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Re: 305 with 350 heads

What is a cheap way to up my compression with the 350 heads
A "bore kit" for your 305.

Part #s for this include castings ending in 638, 880, etc. There are acoupla more but it's eeeeeeeezie to find em in the buzzard nest. 96 - 2000 trucks are a great source. They're CHEEEEEEEEEEEEEEEEEP. Cheeeeeeeeeeeeeeeper than any of the alternatives I can think of for getting the correct compression under 350 heads.

About the STOOOOOOPIDEST thing you can do, is to "build" a 305. As cheeeeeeeeep as the above-mentioned upgrades are, you have to have a head full of sand to spend money on a 305.

What is YOUR head full of? Sand? Rocks? Sawdust? The proof is in your decision.

You WASTED your $200 if you spent it on a 305. Throw it in the trash, take your lumps, learn your lesson, and move on.

Last edited by sofakingdom; 01-20-2019 at 09:51 PM.
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