Your cam, converter and gears do not match. I had a similar situation, I rebuild my 400 a 5 or 6 years ago (stroked it last year) and went from lighting the tires up with the orginal motor (160k/blow by and all) at will to not being able to spin the tires without major power breaking. My issue was installing a cam that required a min 9.5 compression with 8.5 compression, and stock converter with 3.08's. The cam need more gear, converter and compression. It was like a two stroke motor, ran like %$#% until 2.8k and then it was to about 5.5k. I am not an expert, but I don't believe you should ever run that much advance. I run 33 total on my 461 and ran 36 on my 400. You may check to see if your balancer has slid if it is the original this might be the issue.
__________________
GJN
1968 Firebird 400
461
3,580 LBs
3.2k Stall
3.25
1.657 - 60'
11.637 @ 115.45
http://www.youtube.com/watch?v=dEqzw...e=user&search=
|