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305 to 350 swap iroc-z

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Old Oct 12, 2009 | 08:30 PM
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305 to 350 swap iroc-z

i have a 88 iroc z and i bought a long block 350 to take the place of the 305 that bit the dust. i have already put on the tpi setup, 24lb injectors that i was told had to be done for the swap. all the other bolt on stuff that came off the 305 is now on the 350 ready to drop in i think! is there anything else you guys can think of that i need to do before hooking up the wiring harness assing fluids and starting her up? any help would be greatly appreciated.
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Old Oct 12, 2009 | 09:00 PM
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Re: 305 to 350 swap iroc-z

https://www.thirdgen.org/forums/tbi/...-350-swap.html where is this chip located?
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Old Oct 12, 2009 | 09:20 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.

You don't "need" 24 lb injectors. 22 lb was stock for 350's from the factory.

350 knock sensor and module are typically recommended.

Originally Posted by redhoss02
That's TBI, not TPI, but the "chip" is in the same location - the ECM, which is behind the dash above the passenger's feet.
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Old Oct 12, 2009 | 09:32 PM
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Re: 305 to 350 swap iroc-z

thanks for your input! where would you recommend getting the 350 chip can i buy one already tuned? im new to this....i have a 02 duramax that has been very fun as far as mods and now im going to finish my project. so i appreciate all the help you guys can give me!
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Old Oct 13, 2009 | 12:12 AM
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Engine: 5.7
Re: 305 to 350 swap iroc-z

Im actually taking out my 350 off my Iroc Z b/c it was a total LOST and im putting in a 305 that i got a really good deal for.. so far its almost done and i havent had to replace anything. So Im guessing it should be easy for u to throw that 350 in with out any problems..... Im gonna get my 350 BACK... GOOD LUCK W/ yours
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Old Oct 13, 2009 | 12:55 PM
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Re: 305 to 350 swap iroc-z

can someone show me a close up pic of where the knock sensor module is located? where can i get a stock 350 chip new or used. thanks
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Old Oct 14, 2009 | 02:56 PM
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Re: 305 to 350 swap iroc-z

can someone please give me a little information on this....or you can just tell me to shut up! any kind of reply would be awesome!
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Old Oct 14, 2009 | 06:59 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The knock sensor module is in the rear corner driver side of the engine compartment. It's about 3" square flat piece.

Check the Classifieds forums for chips. Might also try gmpartsdirect.com.
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