3400 top end swap questions

[AaronGTR]

Yep. It's got the MAF built into the TB just like the 3800.

I'm figuring you would be able to bolt that TB to the 3400 manifold somehow. Might need an adapter or something. Can't tell without seeing them because I don't know how your TB bolts up. I can tell you the 3400 TB doesn't have the MAF built in, so if you do find a way to make the throttle linkage work and use the 3400 TB, you'll still need to get a seperate MAF sensor. They will put out the same signal (in hertz) but the computer will have a different fuel calibration for that signal based on the original diameter of the MAF on your old TB. In other words your MAF signal will be off and fueling will be all messed up. You'll either need to change the computer then or get some type of fuel computer that will let you adjust the MAF signal (maybe a mini-AFC?).

[Syn]

That TB looks ALOT like a 3800 TB...

agreed, def wierd, i've only seen a few gen III engines and the 3100's were in the older grand ams and a 3400 in a few aleros

could it be a certain platform?

[bszopi]

Yes, its only the A-Bodies. They are also the only 3100s to get the PROM'd PCM versus the FLASH PCM.

[gboogie99]

so either way, i boned as far as the TB unless i keep the original one huh?

[gboogie99]

selling all of the above stuff except the valve covers!!

[Syn]

is the 00+ 3100 intake yours ?


if so i want it

[gboogie99]

all mine...could be all yours soon