MustangWorks.com : Ford Forums - View Single Post - 1.7 rockers with GT-40 P heads

fiveohpatrol · 09-11-2002, 10:26 PM

Thats cutting the piston to valve clearance pretty tight. I would personally use the E303 with 1.6's

Also, I've heard of people having valve float problems when using 1.7's on the P heads, and resolving the issue by shimming the valve spring, not sure on the thickness shim though.

09-11-2002, 10:26 PM	#3
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Thats cutting the piston to valve clearance pretty tight. I would personally use the E303 with 1.6's Also, I've heard of people having valve float problems when using 1.7's on the P heads, and resolving the issue by shimming the valve spring, not sure on the thickness shim though. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft