What to do...
The 351 clevo in my XA GT is a bog stock unit out of an XC GXL (no, don't have the original motor) that has not done heaps of miles since being reco'd.
A while ago something in the motor sh1t itself, and I finally got around to checking it out. It is a buggered lifter, which also seems to have destroyed the cam.
Whilst going to the effort of taking the motor out and fixing it, I am toying with the idea of spending a couple of extra dollars to bump up the performance a little bit to keep me satisfied until I can afford a proper performance rebuild.
The car is manual, but factory auto, which I wouldn't mind changing back to. Has standard cast spreadbore manifold with 650DP holley. Standard 351 heads, electronic dizzy (XC type). Runs 295 tyres with 3:00 gears.
What mods are going to give me the best results for my money?
Cam - which needs to be replaced anyhow - what other mods are required with different cam, ie: strengthened pushrods and rockers?
Heads - rollers, or changing to 302, or larger valves?
Transmission - leave manual or change to auto, stall converter?
Manifold & dizzy, diff gears?
Any thoughts & help appreciated. What would some of these mods cost?