Hi guys,
Need help , cannot find a solution to our misfire problem,the motor seems like it leans out and it pops and I lose power, the motor runs up to 6500 in 1st to 6000 in second and third , the motor is a 383 stroker ,victor intake, holley 750 dbl, msd hei and wires, hyfire 6 ignition ,comp cam xe294h cam good for 2800 to 7000, hooker super comp hedders, motor is bluprinted and has world products angle plug heads, 4400 stall ,th350 ,trans brake. ford 9 inch with 411 gears,
Here’s what we have done ,,had the problem last year and could not figure it out,, so we replaced the heads ,the ignition system ,plugs, pulled the cover and degreed the cam again and found it spot on, we checked firing order, timing, valve lash , changed jets in the carb ,checked secondary operation, we are stumped, some of you have given great advice in the past and we thank you,, we are going nuts here ,, on the good side the thing still ran high 11’s with the problem ,, any and all solutions would be greatly appreciated, thanks
Charles

 

do you have the power valve plugged? Sick

 

i believe sick, JD, or PETE could help with this one, sick i know is good with CARB'd questions.

 

thanks guys
The problem is solved,,the guy who helped assemble the engine turned the rockers down 1 1/4 turns,,readjusted them and the motor reved to 7500 no popping,,
Charles

 

Ah! The old didn't pre load the lifters trick. Valve train noise should be a lot less now.