5.0 cam

[fourdig]

hey everyone i have recently put a 5.0 in my 76 bronco and having trouble with intake backfiring, I have checked base timing and checked my timing gears my firing order several times I have basicly a stock 88 302 with a cam that has more torque at the low end I have installed all new senders and sensers it is a Maf with a custom chip built for it. my check engine light has not come on so not sure what is going on, And suggestions would help my base timing is set at 10 degrees but it only backfires when i am just starting to put my foot on the throttle is starts popping then when i get about half to full throttle then it quits

 

[Broncobowsher]

What firing order is listed on the cam card?
What firing order do you have the plug wires arranged in?
You may have the right firing order for the original engine, but if the cam is different then you need to change the firing order of to match the cam.

What cam did you put in?

Are you running an adjustable valvetrain?

Have you tried running the engine with the MAF disconnected?

Did the engine run in the Bronco before you swapped cams or is this a whole new package with lots of variables?

Probably a lot more questions that I just can't think of right now.

 

[Viperwolf1]

I'll add a couple things.

Have you pulled codes?
What fuel pressure do you have?

 

[ransil]

Check for vacuum leaks