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

tireburner163 · 09-12-2002, 10:40 AM

DO NOT RUN GT-40P's with 1.7 RR's!!!!!!!!!!!!!!! Not unless you've got aftermarket valve springs. The stock ones bind after .500 lift. Even if did have aftermarket springs, flow falls off after .500 lift anyway, just throw on a set of 1.6 RR's.

93GTDIN you can lay down a lot more than 245hp with GT-40P heads, CCM's GT-40P crate motor with the stage 1 port lays down 320hp.

09-12-2002, 10:40 AM	#6
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	DO NOT RUN GT-40P's with 1.7 RR's!!!!!!!!!!!!!!! Not unless you've got aftermarket valve springs. The stock ones bind after .500 lift. Even if did have aftermarket springs, flow falls off after .500 lift anyway, just throw on a set of 1.6 RR's. 93GTDIN you can lay down a lot more than 245hp with GT-40P heads, CCM's GT-40P crate motor with the stage 1 port lays down 320hp. __________________ 1987 Buick T-type 1998 HD Electra Elide