choppalishiz

Hey guys im gettin a 84 caprice with a 305 from an old lady with 73000 miles. I was wondering what kind of upgrades to get me more horsepower there is? Please help?

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Hey Jiggles

Shortbus

Start with an intake and exhaust. Free those two restrictions ups and you will see some gain.

choppalishiz

Will a KN air filter and duel exhaust help any?

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Hey Jiggles

ve1zp

Check This Out
http://www.goingfaster.com/spo/modthel03.html

capriceowns

your getting one with a flat tappet cam, you need to run special oils, like Shell rotella T 15w-40 or other special oils.

Unforuntanelty most 305 are slow asses including yours. You could get a better higher rise intake, a less restricted exhuast, and better distcap/coil, and a better cam but you wont break the 250HP probably not even close.

you could go the route I am and build a 350 for it, for the same money to upgrade a 305 a 350 will make loads of power! but takes a lot of time, skill, and money.

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1987 Chevrolet Caprice classic Brougham. 142,000 on the 305 and still chugging

PeteA216

Actually, I've found it to be cheaper to build a 350 simply due to the fact that there are many more performance parts readily available for a 350 as opposed to a 305. But when leaving the block alone as you said, yes, they are equal in cost to build.

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My three current vehicles:
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Shortbus

Boy this is an ancient thread....