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Rpms jumping around

crobertson405 07.04.2012, 14:50
Cant get my 331 timed. Timing fluctuates. Hers the build eagle 331 stroker rotating assembly ,forged kb pistons, comp 286hr, afr 185 58cc heads, vic jr intake , and holley 650. pro comp dizzy and 6al box.
trevnut 07.04.2012, 15:07
Get a real dizzy
crobertson405 07.04.2012, 15:53
Lmao! Its not the dizzy.
BlueCuda 07.04.2012, 17:04
The dizzy is a very important factor in timing. Lock the advance out to eliminate that variable.
crobertson405 07.04.2012, 17:17
Yes know dizzy is important. tried it in a different 302 worked just fine.Even tried an msd dizzy. same thing. cant find any vac leaks. havent used vac gauge yet. pretty sure its not the box.
foxchassisfreak 07.04.2012, 23:48
lock out the advance and see what happens, i'd guess that your problem stops
67mustang 08.04.2012, 14:20
How many degrees is it fluctuating? Are you setting it at an idle?
john-dickjr 15.04.2012, 21:43
rather the dizzy works right now or not..it will not for long..they are junk..just dont understand why spend good money for a stroker kit..intake..etc then buy junk ass procomp anything..any way now for the cause..most times that i have had this issues it was the timing chain being stretched and needs replaced..does your have a new one?
crobertson405 09.06.2012, 00:20
yes brand new cloyes dbl roller
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