383 stroker help

[ro444]

I recently replaced my tired 350 with a 383 stroker in my 1988 k5 blazer.I fired it up and it seemed to run fine except it lagged a little bit when i would shift to 3rd gear. Basically it runs about the same as my 350 did. I have talked to some local people around here and they have told me to order chip.Yesterday I orded the chip and hopefully i will see a differnece. I'm not expecting a race motor but this thing should have 100 more horsepower than my stock motor. Should the chip make that big of a difference? Any suggestions?

Thanks Rich

 

[dyeager535]

http://coloradok5.com/forums/showthread.php?t=91532&highlight=piston

 

[fordtruggy]

Play with the timing,It should have a little more than before if not maybe the guy you bought the motor from shorted you 33 cubic inches.Or it is severly detuned.

 

[b454rat]

I put a 406 in my old truck and didn't do anything to the computer. I would try the timing as well.....

 

[S. Burnham]

454 injector has a larger volume of flow. they will work in the 350 tbi, but they are about $75 each new. holy makes a direct factory replacement tbi that runs 30% more using the factory computer for about $350.

 

[ro444]

I just took off the holley tbi. I kept getting check engine light on. then it would act like it wanted to die when I was driving. I dont think I had it calibrated right. I couldnt figure out how to calibrate the TPS. I put the stock tbi back on and it runs better now. I am going to wait till I get the modified chip and try the holley again. I also tried to advance the timing and it doesnt seem to make any difference with my lag problem. The 350 that I replaced ran fine, it had about 18000 miles on it and I just wanted a motor that had alot of low end torque and instant throttle response. I hope the new chip will make a difference.