350 swap.

[JonZ71]

Quick question. I may have a 350/TH400 setup available for free in the near future. What all is needed to set in my truck. Both engines are TBI.

 

[91Bluestreak]

Well going off my camaro no how, you'll need
Computer and or 350 chip for your comp, knock sensor for 350, 350 tbi unit or 350 injectors, spark control module?? maybe upgrade fuel pump not sure...
I think thats all I did when I swapped my 305 to a 350.

 

[STEBS]

to my knowlage (asuming its ur 94 v6 in ur sig) 350 motor mounts, 350 radiator, ecm, and make sure u use the 350 tbi unit... ive heard of having to splice the wire for the a/c comp in order to reach but other than that, the v6 harness is supposed to work

 

[outalne94z71]

i have a ecm for a 94 5.7/4l60e so you can keep your trans and not lose overdrive with the th400

 

[91Bluestreak]

duh forgot about motor mounts, the radiator may be ok as long as your not towing. I know the v8 s10 guys use the 4.3 radi on stock 350s.

 

[JonZ71]

my Radiator is leaking anyhow. so that would be upgraded to one with a oil cooler. also would prolly do a external trans cooler too. and muswasp, pm me a price. I should know this week sometime.

 

[DonYukon]

yes the 4.3 is a 5.7 with two cylnders cut off i remember talking to my uncle (20 year GM mech) and he said they are practially the same engine just two cyl cut off thats why the 4.3 is so reliable its a baby 5.7 lol but in all seriousness my a/c compressor came off of a 4.3 back when i was in HS

 

[JonZ71]

well i don't care about the compressors, Because at this point ill have two of them. The fuel pump will be coming out of the camper and go into my 94.. Will i need to modify the exhaust to fit or will the manifolds bolt directly into place?

 

[91Bluestreak]

the y pipe may need to be replaced but I believe they are the same being that they are the same size width wise.

 

[JonZ71]

Well my exhaust was recently replaced and its like a 3" all the way back