In theory they should work just fine on your application, however, Each engine can vary from the next so the only way to be 100% sure is to check the pattern that they leave on the valve spring. You can do this by putting a layer of assembly lube on the top of the valve stem that stick through the retainer. Bolt down the rocker arm and rotate the engine over. Take the rocker back off and look to see where the roller came into contact with the valve stem. It should be directly in the middle if it has the proper geometry. if it is offset, then you would need to look into shims to correct it.
Answered by Scott G. from hewitt | Comment 0 0
I have the GT40P heads and opting to keep my stock cam in the 5.0 explorer V8. Will I need to upgrade the valve springs as well with these 1.7 roller rockers or will the stock springs work just fine? Thanks
Asked by Christopher V. from Litchfield Park | Comment 0 0
You'd want to upgrade the springs. The stock springs were barely adequate for the stock cam and 1.6 rockers. Adding the 1.7 roller rockers could cause valve float at relatively low RPM. The TFS-2500100 would be a great option for you.
Answered by Jonathan M. from Hewitt | Comment 0 0
Ford Mustang - 1979 (79) - 1980 (80) - 1981 (81) - 1982 (82) - 1983 (83) - 1984 (84) - 1985 (85) - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95)