GT-40P Guys.... Roller rockers?

[Grits]

Hey all.. putting together a very simple performance engine build... I have a 99 explorer engine, with GT-40P heads and explorer intake... i want to run a E303 cam...

Now, i want to go ahead and upgrade the valve springs and retainers while im at it..

I was looking at using the Ford Racing M6513A50 single valve springs and retainers.. as they are supposed to work with all GT-40 heads..
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=44
Good or No?


now im kinda confused on the rockers... will the stock rockers work? or do i need to upgrade? can i get a reccommendation if so? as i dont know what the explorer heads came with compared to the tipical E7's on the mustangs and/or if the rockers are the same.

Thanks

 

[bubba-dough]

Yes the stock rockers off of either will work but if you have the extra cheese buy some good roller rockers.

 

[RYC CUKR]

Stock rockers will work. I run a set of scorpion 1.6 pedestal mount RRs. If you decide to run a set of 1.7s remember to recalculate the valve lift to make sure that your springs will still work with them.

 

[Tonys96Cobra]

Just last weekend I put a set on my brothers car, we used some the stock cam and a 1.7 RR. Using 1.7's with your e-cam will put you at .529 valve lift. Looks like those frpp springs arent recomended with the stock rockers. I hear people using the TFS spring kit with good results also.

 

[urban96]

see if you can get a cam kit that comes with matching springs

 

[RYC CUKR]

I run a TFS spring kit on my p heads. The springs are good to .542" max lift.

 

[Grits]

ok.. so im thinking of doing eather the e303 or the trick flow stage 1 cam, crane energizer 1.7 roller rockers, and the tfs valve spring kit.. sound good?