ls1 heads
10-26-2005, 03:25 AM
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Originally Posted by orangeapeel
Not sure on those heads. Probably not for the good to try and get 305 out of them.
10-26-2005, 03:31 AM
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Originally Posted by orangeapeel
Your best bet would be to go with some 6.0L heads
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10-26-2005, 12:22 PM
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Originally Posted by FormulaFirehawk520
whats the largest CFMs the you can port stock 853 heads? someone told me they were able to get 305 CFMs but just wondering on others input thanks
Brandon
10-26-2005, 02:05 PM
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Originally Posted by xfactor_pitbulls
Well the 853 head is no different from a 241 casting or even a 852 truck head. Combustion chamber is the only thing that changes there. It isnt uncommon to see 300+cfm out of them. I believe TEA claims 318 cfm up top from the stage 1.5 I have seen Trevor Johnson's work go about 320 in person and my own has been 305. So by no means is it a big deal.
Brandon
Brandon
10-26-2005, 09:14 PM
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Originally Posted by FormulaFirehawk520
if i were to get around 305 cfm should i replace the rockers or leave them stock
Brandon
10-26-2005, 09:16 PM
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Originally Posted by xfactor_pitbulls
Leave the rockers alone, period. You will see absolutley no gains. That is unless you are sliding in a .700 lift solid roller cam.
Brandon
Brandon
10-27-2005, 08:31 AM
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Originally Posted by 52172
Mine flow 306@.650 and 299@ .600 and my head porter said he can bring them up to 330 cfm@.650 if needed for larger cubes.
Brandon