I have an explorer shortblock with an E303, 1.7 rockers, stock GT40P heads.
Checked piston to valve last night, and at the tightest point I had .075ish clearance(heads still on, so used checking springs and plunged the valves every few degrees).

I have the Crane spring kit which should be about 110 on the seat and 375lbs at full lift. I dont plan on revving the engine past mid 5s anyhow, since its in my truck.

Think the P to V is adequate?

Thanks.

 

Heh.. Im really avoiding pulling the heads, because if I do they probably wont go back on
I'll end up goin with something aluminum, then the money I just spent on headers and springs/locks/retainers would be wasted, and I would have to get new rockers because I wouldnt be able to bring myself to use pedestal mounts.. then I would be needing pushrods at a minimum, and probably custom length ones at that..Plus the price of headgaskets and bolts..Then I will have nice heads on a shitty cast piston shortblock.

My grander plan is to get the swap going first, since a small block was never offered in this truck. The wiring is custom, and its a bit tricky being OBD-II/EEC-V with a computer controlled 4R70W to boot. Once I prove it to work, then I want to build another motor from the ground up.
And to think, a year ago I never woulda thought I would own another pushrod engine. Now I got this project in my F150 and a built blower motor in the GT... LOL

 

Fuck that! I just bought em! Not a bad deal for $60..LOL.. Thanks Corral. Full rollers too.

Its gonna turn that E cam into something a little meatier. I forgot to mention it in the original thread somehow, but the cam dialed out at like .535 or .540 lift

Not that i think a P head will flow for shit at .540, but it should get the valve opened to a point where it does flow well alot quicker than it would with 1.6s...

 

hey if you'd run it, thats good enough for me

 

Cool, good to know. I just heard somewhere the exploder pistons dont have as big a valve releif. Not sure if its true or not though.