gp90se Posted October 9, 2003 Report Share Posted October 9, 2003 after the fire im not sure I want the puny 3.1 anymore. I just need to know what wiring harness plug into my firewall, and which engines bolt into the cradle (pat modifyed it so it has the 3.4 engine mount holder). 90 grand prix -Jeff Quote Link to comment Share on other sites More sharing options...
Redfox340 Posted October 9, 2003 Report Share Posted October 9, 2003 Ah... this has been discussed many of times. Check this post to begin to get a basic idea on where to start: 2.8L to 3.4L or Better? - Erik Quote Link to comment Share on other sites More sharing options...
gp90se Posted October 9, 2003 Author Report Share Posted October 9, 2003 ah yea i missed that post, im thinking a 94 or 95 (non obdII) 3400 out of a minivan or sumthing, id love 2 keep my pos 4t60, cauz the 4t60e is so much slower, but nobody responded to my post, will a 3400 work with a 4t60 with a stock 4t60 ecu. -Jeff Quote Link to comment Share on other sites More sharing options...
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