Crazy Backfiring

[roysgreenstang]

No offense taken. I myself as a trade choice am a mechanic. The mechanics that did the adjustmant other then myself are all licensed mechanics. I also had them look at the timing gears to ensure i wasnt incorrest installing them. The gears have been checked at least 10 times last year, and they are correct. But like is said, when i get home im ripping it all apart again, and starting over on an engine stand so i can take my time and ensure everything is properly put together. I will be trying everything you have told me. Yes i am running mufflers. They are flowmaster, and im sure that they arent giving me any amount of back pressure. The car has long tube headers too and a 2-1/2" H-pipe. the header do cover the exhaust ports on the heads, but its a close fit. And thats all i have for information about the car to offer. I cant wait to get home and try everything. Ill get her going 1 way or another.

[jovyarcher]

had the same problem with my mustang, as much as I want to try the suggestions given, what's that best way to fix this?

[goodyear1984]

its very easy to check and see if the push rods are the right size.just tighten the rocker just anuf so theres no lash,you want the roller tip to be centered on the valve stem.to adjust the rockers just put the pushrod in the tips of ur finger and roll the pushrod while u tighten the rocker as soon as u feel the push rod start to get just a little had to roll with the tips of ur fingers stop and turn 1/4-1/2.if u do that and it still does that its something else.make sure u are using the right firing order because there is 2.ps thoes heads way big for a 302