Lt1 Engine Harness & Swap

[BowTieOgre]

I bought an LT1 harness off of a board member who had it reworked by Speartech and it looks pretty good. I bought a different harness at a recent swap meet just because it had an extra few feet to the PCM connections but if that wasnt the case I would use the Speartech in a heartbeat. I guess I will put it in storage in case I do another swap.

[BowTieOgre]

Here are a few pics of the harness i got 2nd hand from Speartech. Note the code reader plug and check engine light.

[BowTieOgre]

Ok help me out guys. I am to the point where I need to remove the wiring harness from the donor Caprice I have and I need to know if I can just cut it on the interior side of the firewall or does this junction come apart?

[JDL]

you will have to cut a bigger hole and pull it all through.

[bagged70]

i got a street & performancein mena ar harness super nice cost me some buck 750.00 they have some nice stuff

[68CHEBY]

Originally Posted by Musclerodz

Street and Performance in Mena Ark. I have been told Painless harnesses are not actually Painless.

Mike

I have been building custom cars trucks and street rods for a long time and my experience with Street and Performance has not been a good one. Call them with a problem with one of thier harness and computer set ups and see what happens. I have yet in at least 10 yrs. spoke with anyone there that was of any help at all. Even with the Ford mustang injection set ups which are probably the simplest of them all. A tag was torn off one wire of their harness that I installed in a 40 ford so I called them to find out what the wire was and got absolutely no answer!
If I were doing a gm swap I would certainly call Howell fuel injecion, very reasonable on price and superb on service, even years later with upgrades etc. You won't be sorry. PS he builds indy car harnesses and was the electrical engineer at chevrolet

[Hart_Rod]

68 Chebby

"superb on service, even years later with upgrades etc"

What updgrades did you do later?

[Kenneth_CS87]

Originally Posted by Hart_Rod

68 Chebby

"superb on service, even years later with upgrades etc"

What updgrades did you do later?

Hey How did you run your hoses to ur stock radiator on your car?

[Hart_Rod]

Like this:

[hotrod40]

I used a Street & Perf. harness on a 96' LT4 I put in a 40' Ford Tudor. Harness was perfect, no VATS or EGR. They no longer rebuild OEM harness. Used a 96 Vette/Iroc ECM, they programed the chip for that as well. I tried a company in San Antonio, bout half of the sensor connectors were wrong, sent it back and called S&P in Mena, Ark.

Don't forget the steam line on the throttle body, the bung in the radiator has to be higher than the back of the head. Learned that one the hard way, on a brand new aluminum radiator.

Another good mod on install, is go with after market distributor, OEM had problems with condensation even though they ran a vaccum line thru the distributor.

[hotrod40]

Another Pic