MustangWorks.com : Ford Forums - View Single Post - Piston to Valve Clearance Check

90 lx conv. · 01-31-2008, 08:29 PM

Hi, i was runnig a set of the TRW L2378 bored over .030" in my 351w. That particular piston is forged and is dished, i am not sure on what size the dish is however. I was using a set of GT-40X heads in which i had 1.94" intake valves and installed a set of 1.60's on the exhaust side. The cc of the head was 58 and my head gasket thickness was .030". I was running a flat tappet solid lift cam .555", .573" lift with a duration of 286, 292 and had no problems with clearance issues.
I would say that most likely you'd be ok, but to be on the safe side check with a local machine shop to get their opinion or check the clearance. I hope this helps, good luck!

01-31-2008, 08:29 PM	#5
90 lx conv. Registered Member Join Date: Jan 2008 Posts: 2	Re: Piston to Valve Clearance Check - 351W Hi, i was runnig a set of the TRW L2378 bored over .030" in my 351w. That particular piston is forged and is dished, i am not sure on what size the dish is however. I was using a set of GT-40X heads in which i had 1.94" intake valves and installed a set of 1.60's on the exhaust side. The cc of the head was 58 and my head gasket thickness was .030". I was running a flat tappet solid lift cam .555", .573" lift with a duration of 286, 292 and had no problems with clearance issues. I would say that most likely you'd be ok, but to be on the safe side check with a local machine shop to get their opinion or check the clearance. I hope this helps, good luck! Last edited by 90 lx conv.; 01-31-2008 at 08:32 PM.. Reason: Forgot to enter some info