Head Work

[graysilverado5.3]

I have some 799 heads I plan to use on my 5.3, but I dont know what to do to them. I was thinking milled .40 and 3 angle job, along with bigger valves. Any suggestions, or advice would help. Currently truck has 212/218 cam, tb stall, headers, 3" full exhaust, ud pulley, tbss 90mm intake, volant air intake and nitrous. I want to use the heads with this setup first, then i'll eventually get a cam and stall to match the heads.

[skeet]

I have some 799 heads I plan to use on my 5.3, but I dont know what to do to them. I was thinking milled .40 and 3 angle job, along with bigger valves. Any suggestions, or advice would help. Currently truck has 212/218 cam, tb stall, headers, 3" full exhaust, ud pulley, tbss 90mm intake, volant air intake and nitrous. I want to use the heads with this setup first, then i'll eventually get a cam and stall to match the heads.

have you thought about what your CR would be with the milling of the heads at .40 ?

get them ported by a pro, WCCH ports heads i would talk to someone that has a good rep on porting!! setup sounds nice or will be once done... when you decide on cam get it spec'd ... it should run very well

[graysilverado5.3]

Im not too sure on the CR, but I believe milling the heads .30 brings up the compression to about stock, more or less. So milling .40 should increase the CR more than whats stock.

[RedHeartbeat]

now are you talking .30 mm or .030"? Use your decimals properly or its very confusing. .30(mm) would only be about .012".

[graysilverado5.3]

Sorry,i meant .040, wasnt to sure on the decimals.

[DBRODS]

I have a guy thats puts most of the BIG name places to shame on head work... Last set dyno'd 32rwhp/27ftlbs on port work alone. They did not get milled for a compression increase. Its a stock bottom end LS1 with 243 heads and a ms4 cam. 438/391 before and 470/418 after. Same dyno and weather.

[graysilverado5.3]

I have a guy thats puts most of the BIG name places to shame on head work... Last set dyno'd 32rwhp/27ftlbs on port work alone. They did not get milled for a compression increase. Its a stock bottom end LS1 with 243 heads and a ms4 cam. 438/391 before and 470/418 after. Same dyno and weather.

Wow, can you send me a pm with his info.?

[96/chevy/pu]

I have a guy thats puts most of the BIG name places to shame on head work... Last set dyno'd 32rwhp/27ftlbs on port work alone. They did not get milled for a compression increase. Its a stock bottom end LS1 with 243 heads and a ms4 cam. 438/391 before and 470/418 after. Same dyno and weather.

So he had heads done and did a cam swap or it had the same cam on tha first run.

[DBRODS]

same cam... Only had headwork done.. Nothing else changed..

[low2001gmc]

always good to know along with prices to compare....i am sure he beats some of them names too???