my cam has .570 lift and i dont want nething less than .1 clearance. 
head number question
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From: pierre part louisiana
head number question maybe im looking i the wrong spot but my heads have the number 241 on the outer corner of the front of the head??? is this wright if so how can i find out my specs?
5.7 07-98 LS1 heads.
These are the worse heads thta have been put on a LS1 from GM.
After porting they are about the same as most LS1 heads, but still not as good as the LQ9 (317 casting) LS6 (243 casting) 5.3 Liter (i forget this one) and there is also 4.8 head with the same castings as the 5.3's.
These are the worse heads thta have been put on a LS1 from GM.
After porting they are about the same as most LS1 heads, but still not as good as the LQ9 (317 casting) LS6 (243 casting) 5.3 Liter (i forget this one) and there is also 4.8 head with the same castings as the 5.3's.
as stated 241 castings are the best flowing 5.7 heads over the 853's and the 806. 706 5.3 heads have smaller intake vavles 1.89 vs 2.00 on the 5.7 heads. CC on the 5.3's is smaller, if you get some 5.3's you'll want them ported and outfitted with bigger vavles to get the most out of them. due to there smaller CC they yeild a 10.8 CR IIRC.
do a search for the CC and head casting thread, it has all the info you need.
do a search for the CC and head casting thread, it has all the info you need.
Thread Starter
10 Second Club
Joined: Mar 2003
Posts: 346
Likes: 0
From: pierre part louisiana
i have a set of stock 5.3 heads . how do you think that would perform with a mild port polish and stock valves???
i also have a set of stock 6 liter heads . what is my best option without much money?
i also have a set of stock 6 liter heads . what is my best option without much money?
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