243 valve job
Thread Starter
Teching In
Joined: Jan 2012
Posts: 7
Likes: 0
243 valve job i have a ls1 im about to start on, i just bought some 342 heads off a tbss ls2, im wanting to get them ported polished and shaved and also put bigger valves in them. any number out there on how big of valve i can put in there or should i just explain to the machine shop what im looking for? im new to all this so take it easy on me Thanks
Staging Lane
Joined: Jun 2010
Posts: 91
Likes: 0
From: Kentwood, LA and Beebe AR
There is only so much power you can make with a 2.00" valve. Look at the heads on some of these higher power engines, like the 500whp 346ci engines. They are not using the stock valves.
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Thread Starter
Teching In
Joined: Jan 2012
Posts: 7
Likes: 0
i just figured it would add a little extra power and they have over 100k miles on the heads i got. im just wanting to refresh the heads before i put them on so i dont have to mess with them later down the road
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Factory valve have it limit to let air into the chamber you need bigger valve to let more air go into chamber with NA motors unless you have a FI motor that you going to push the air.
