317 heads VS TFS 225cnc
11-30-2009, 09:52 PM
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317 heads VS TFS 225cnc what kind of power gains would i see going from a set of 317 heads with 202 160 valve and mild port to a set of trick flow 225cnc milled to 61cc. its on a forged LQ9 with a torquer 2 cam 232 234 dur..currently with the 317's i have 10.1 compression
12-01-2009, 09:56 AM
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Consider also that you have a 71cc head with that 317 (provided you haven't milled it any) and you are moving up to a fully ported aftermarket head with a 61cc chamber. You are looking at a bump in compression that may require race gas on an iron block.
12-01-2009, 07:01 PM
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i already have a set of TFS 225 cncs on my trans am with 11.7.1 compression and it runs fine on pump gas..this motor is in another project
12-01-2009, 07:22 PM
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Trick Flows are the shis nit when it comes to heads, not know anything about your heads ## and all but you would pick up 20 to 40hp I would think. I had a set of Trick Flows on a 5.0 Mustang about 10 years ago and I was suprised to see it take them as long as it did to make heads for the LS comunity. I have been thinking of getting a pair for my car but like to know what to expect on the dyno, street and especially the track. If I do I am going to buy the Jesel Mohawk Roller Rockers and Nast Performance raised Valve covers and I would be looking at $5,000 to $6,000 dollars for everything and don't know if I should.
