2g head help/Major Backfire

[Sicotic]

So here is the Deal i swapped a 1g head with a 2g head on my 1g block. Everything is back together timing is perfect, at idle the engine does fine, give it gas it takes a second to rev up, but soon as i go to drive it or anything it backfires lick crazy and boggs out. I cant find the problem, i redid the timing a few times. The only thing i think it could be is i have the 1g intake cam on the 2g head, and left the exhaust on the 2g head. Could this cause this problem? i searched didnt find nothing so hopefully someone can help, also car is bone stock beside head swap.

 

[LiquidX]

So you left out the CAS? Everything plugged in?

 

[Sicotic]

I have a 92 laser RST i put a 2g head on it, i took out the intake cam from the 1g so the CAS hooks up, but i left the 2g exhaust cam in.. is that a problem?

 

[kngofbrknprts]

did you make sure the plugs are wired right? thats the samething my car did when i had it wired wrong

 

[Sicotic]

what do you mean are the plugs right?

 

[LiquidX]

IIRC the CAS from a 1g and 2g are 180* off or maybe that's just the 95 96 model.

 

[Sicotic]

i have the 1g intake cam it is fine plugs right up, i have a 92 laser so its not the CAS

 

[Sicotic]

anyone????

 

[gingerbredman00]

I think he meant make sure spark plug wires are in the right spot

 

[eeeewidner]

Is your engine timing set right? What about you base timing?

 

[Sicotic]

im pretty sure they are in the right spot, and the timing is perfect everything lines up, will the 1g intake cam and the 2g exhaust cam make a difference?

 

[Sicotic]

What about my lines that i capped, i capped everything but i didnt block off the EGR valve, also i used a 2g EGR does anything make a difference how it runs?