Thank you VERY much for taking the time to reply @Hotrod Lincoln!
HEI was (is) new (OEM) for a '76 292. In desperation, I even bought a new coil for it (with same results).
It sounds to me as tho the advance on the CAM (camshaft) has a different advance than the distributor. Couldn't make it run worth beans.
80's. I was afraid that'd be the case. I understand that they stopped using them in model year '87. I have the Dealer promo for all the trucks that year, and they specifically stated:
- Note: for 1987, all gasoline engines in these models will be certified using
light-duty emissions test proceedure. This will require the use of a catalytic
converter, unleaded fuel and the GVWR to a maximum of Series 30 Chassis-Cab
models with GVWR of 10,000 lbs. and 11,000 lbs. are discontinued.
- THE 4.8 LITER (292 CU. IN.) L6 ENGINE is discontinued. - All gasoline engines have Electronic Fuel Injection (EFI).
...
Looking at all the performance specs for this engine over the years. It appears that they simply de-tuned it to complete uselessness. Then dropped it. The compression went from 8:1 to 7.8:1.
The cam timings/durations also followed suit. What started out at 170 hp @ 4000, 275 ft-lb @ 1600. Became 115 hp @ 4000, 210 ft-lb @ 800.
As a result, I'm inclined to think the ignition(s) I have (mechanical, or HEI) is tied close enough to the cams performance "arc" that they don't work well.
As to the crank. I'm very much inclined to simply build up my original 292, and when finished, simply drop the crank out of the "crate motor" to replace the bent one. But, while I'm inclined to believe the lowered compression is either, or both piston/head. I have no specs to prove it. Your thoughts?
Thank you again, @Hotrod Lincoln!
Chris
