Before I decide to go for the 3400 swap i was wondering if PCMforless Is able to tune a computer for a 94 to compensate for the larger injectors, heads, and airflow. Has anyone thought about using an aftermarket 62mm (instead of the stock 52mm) throttle body for the 3400 to compensate for a RICH reading, or an Adjustable Fuel regulator for a LEAN reading?

 

What are you swapping?

 

Sorry for not clarifying, I meant, I intend on swapping the aluminum heads,pistons, fuel rail, injectors, upper and lower intake pleneums andof course the throttle body (Im thinking of upgrading to the 3400 aftermarket 62mmTB) from the 3400 onto my 3.4


I wasn't aware it was possible to swap in the entire 3400 motor? Doesn't the 3.4L have a performancecam and forged steel connecting rods, that the 3400 does not have?

 

The 3400 has a roller cam, the 3.4 can't use roller cams because of a goofy oiling system. As long as the PCM can access all the sensors, it can be tuned for the higher performance engine. Spark timing will have to be retarded a little because of the fast burn heads, and if you use the 3400 injectors, the fuel map should be close. If you want some crazy compression ( around 14:1)leave the 3.4 pistons in place, and buy racing fuel, and use a long duration cam.

 

I am aware the 3.4 cannot use a roller cam.... You taught me that in the beginning ;]]
I would do that however the closest place to get racing fuel is about 45 miles away, I kinda want to keep this as a daily driver. I think 92-94 octane is what i willl be using, (with the 3400 pistons).Is anyone aware if they makeaftermarket rockers for the 3400?

 

The 3400 uses factory roller rockers, similar to those on the LS1. They work fine but you will need custom length push rods, especially if you put in a hotter cam.

 

contact black94v6 on camarov6.com

 

screw that man, swap to a 3800 or av8 if your going to do work...