91 Mighty Max 4x4
6g72 engine
Replaced Cylinder heads (used ones)
New timing belt
When timed properly (at 0*) it feels extremely sluggish. With the timing advanced 30 degrees, it idles at 1,000 rpm, and has normal power.
Ive verified that the timing belt has not slipped, everything lines up to TDC (did a piston stop test to verify), distributor lines up to cyl #1.
Ive checked the belt and positions 3 times to make absolute sure.
I'm pulling my hair out. Do you guys have any opinions?
Thanks.
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