Posted By: 440challenger
New motor running rough-BBC - 09/26/10 12:39 AM
Ok dont shoot me, im a die hard mopar guy, and i almost converted my die hard chevy old man to 100% mopar. BUT We finnaly got his BB CHEVY in his chevelle and running which we've been building together for years. Its a 13-1 comp 720 roller cam dart head 496 stroker.
Compression on all cylinders is 175-180
Plugs are NOT hitting the pistons closing the gaps
Ignition is a msd6al we just got back from msd (reconditioned)
Firing order is correct and timing is at 36 total.
1050 dom .. it had 88 squared jetting with 5 power valve front and rear.Fuel pressure 7psi. I blocked the rear and went to 84 fronts and it made no difference.
Its running like it has a bad miss-revs up very rough...Im not sure where to go from here.
I told him lets try putting an hei diz in to eliminate the msd and see if it makes a diff.
Running no alt(havent hooked one up yet,just batt volatge with a charger on it).
Any pointers on where to start? Thanks guys!
Compression on all cylinders is 175-180
Plugs are NOT hitting the pistons closing the gaps
Ignition is a msd6al we just got back from msd (reconditioned)
Firing order is correct and timing is at 36 total.
1050 dom .. it had 88 squared jetting with 5 power valve front and rear.Fuel pressure 7psi. I blocked the rear and went to 84 fronts and it made no difference.
Its running like it has a bad miss-revs up very rough...Im not sure where to go from here.
I told him lets try putting an hei diz in to eliminate the msd and see if it makes a diff.
Running no alt(havent hooked one up yet,just batt volatge with a charger on it).
Any pointers on where to start? Thanks guys!