If you are backfiring when running, I would start with a timing light. Incorrect timing will cause the motor to crank hard and overheat(making restart even harder). Also, the factory points distributors originally have a resisted wire feeding them power from the factory, not sure if they should have more voltage than that. But I have HEI and am not familiar with how points should be setup. I do know is I was given alot of bad advice from down the street guys on my first cars. I found out on my own later that if its setup the factory way with good parts it will work really good.
GR-RRR!
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1970 GTO 458 CID .040 over 4 Bolt 428 Block, Forged Eagle 455 Crank, 295 CFM SD KRE D-Ports, SD Old Faithful HR Cam + Comp HR Lifters, PPR Maxx-lite rods, Racetec pistons, PRW 1.65 SS Rockers, 900CFM Holley HP TBI, Performer RPM, Hooker Super Comps, 3" X-Pipe into 2.5" mufflers/tailpipes, 2.75 1st TH400, Continental 13" Converter, 8.5" 3.08 Posi.
Everything installed, fired up and tuning has begun!
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