Hello all! So I did the 5.0 HO swap on my 89 MGM. Car runs good (after a mishap of getting excited and putting battery in backwards. I'm a idiot I know lol) but I have some questions if anyone can help.
So for the build I did E7 heads (some bowl and port work/smog bumps removed), 86 GT cam (advanced 4° at crankshaft), explorer intake, lightning throttle body/spacer, mustang shorty headers, custom 2.5 x pipe, Borla Pro XS mufflers, factory 2" tailpipes.
My question, since I have my camshaft advanced 4° at the crankshaft when I go to set base timing (engine warmed up, spout connector out) the car runs like crap with base timing at 14° Advance(which I thought was alot when cam is set at 0/0). When I bump it all the way to 20° base timing it runs great (no back firing, no knock/ping) and actually has some power out of the hole with the weak 3.27 rear gears.
So is 20°Advance to high for base timing even tho I'm having no I'll side affects? Is it taking so much base timing since my camshaft is advanced?? I can bump it all the way to 40° Advance base timing at idle and I still get no knock/pinging, backfiring, or anything reving or even when turned off and spout connector plugged back in and taken for a drive. Is my TFI module trashed or what?? I'm stumped why it's being weird.
Sorry for the long read, just want to be thorough. Thanks for all replies in advance.
So for the build I did E7 heads (some bowl and port work/smog bumps removed), 86 GT cam (advanced 4° at crankshaft), explorer intake, lightning throttle body/spacer, mustang shorty headers, custom 2.5 x pipe, Borla Pro XS mufflers, factory 2" tailpipes.
My question, since I have my camshaft advanced 4° at the crankshaft when I go to set base timing (engine warmed up, spout connector out) the car runs like crap with base timing at 14° Advance(which I thought was alot when cam is set at 0/0). When I bump it all the way to 20° base timing it runs great (no back firing, no knock/ping) and actually has some power out of the hole with the weak 3.27 rear gears.
So is 20°Advance to high for base timing even tho I'm having no I'll side affects? Is it taking so much base timing since my camshaft is advanced?? I can bump it all the way to 40° Advance base timing at idle and I still get no knock/pinging, backfiring, or anything reving or even when turned off and spout connector plugged back in and taken for a drive. Is my TFI module trashed or what?? I'm stumped why it's being weird.
Sorry for the long read, just want to be thorough. Thanks for all replies in advance.
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