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Controller kits GM vs Speartech

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Old 02-26-2017, 04:05 PM
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Default Controller kits GM vs Speartech

I am starting a Gen 5 LT4 install in a 1965 GTO. As far as the gm controller kit 19331517 vs Speartech's kit, which one do you like and why. Also I am using a T400 in the car and would like your opinion on a signal converter to the ECM I would like to keep the cable driven speedo in the car. Thank you in advance.

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Old 02-26-2017, 04:26 PM
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Cant speek for the Gen 5 engine, but I like the GMPP LS3 controller kit I have. All fuses and relays are in a Delphi fuse box, and was easy to supply a single wire for 12 V+ power to feed everything. The one thing I dont like about it is the sensor wires are extra long.
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Old 03-03-2017, 12:05 PM
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Give John Spears a call at Speartech and run it by him. Bob
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Old 03-07-2017, 05:55 PM
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Last 2 LS3 kits I am aware of, ate the transmissions. 4L70E.
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Old 03-07-2017, 08:23 PM
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Originally Posted by Old Geezer View Post
Last 2 LS3 kits I am aware of, ate the transmissions. 4L70E.
Ate the transmission WOW
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Old 03-08-2017, 01:55 AM
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Originally Posted by Old Geezer View Post
Last 2 LS3 kits I am aware of, ate the transmissions. 4L70E.
The GM Kit doesn't control the transmission. You have to use a separate transmission control unit to control the transmission
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Old 03-10-2017, 10:33 PM
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I have the Speartech wire harness and controller made to my specs on my '95 Impala with the 4L60E trans and have had NO PROBLEMS with it at all.

I can't speak to the quality or usefulness of the GM part.

KW
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Old 03-11-2017, 11:59 AM
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SPeartech gets my vote.
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Old 04-20-2017, 08:16 PM
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Originally Posted by Jimbo1367 View Post
SPeartech gets my vote.


x 2.....................
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Old 05-30-2017, 09:15 AM
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ive ran speartech and psi on 2 diff swaps. the speartech harness is way nicer. comes fully wired compared to a psi. We used a speartech harness on my buddies gen5 c10 swap with the factory 6l80e without issues. very nice harness for the money!
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