New Howell efi harness for speed density tpi.
For manual trans, easy to add tcc/vss plug for 700r4 automatic.
Uses lt1 iac
1227730 ecm included (no memcal).
$320 shipped in the states

Sold

 

Ttt

 

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What are the advantages if any of using this over an oem harness in a 87 Chevy truck TPI swap? Speed density setup backed by a 4 speed transmission.

 

The advantage is this is new vs a 20 some year old harness and easier to install than a factory harness for a conversion.

 

Lol, guess I should have said "aside from the fact it's new". Would I need to purchase any additional components as far as wiring is concerned to "integrate" this into my truck? It's currently a factory TBI system. Thanks for your time.

 

Your vss sensor will work if it's Hook to pin c6 of the ecm the other thing you need is a plug for the iac or use a lt1 throttle body or iac housing.a memcal will need to be programmed for the c6 optical vss hookup. Memcals can be expensive I do have a few v6 ones I can program to work for a small price.
Right now the vss is Hook to a10 on your 1227747 ecm a brown wire.

 

Sorry I should have clarified, truck is a 4 speed manual not auto. It's 4 speed from the factory so it has a cable driven speedo. Understand on the IAC also. I would assume the same ecm model? Have never physically touched or examined it.

 

Same ecm for tbi truck 87-91, you could use a retrofit vss without memcal reprogramming other than disabling vats.
http://tpiparts.net/inc/sdetail/7587
http://tpiparts.net/inc/sdetail/2351

 

Ok, if I'm understanding correctly, the linked parts would be the way to go in order to keep my speedo working. As far as programming goes here's my dilemma:
While not anything exotic, the motor is not stock.
Hot cammed, aluminum headed 383. I think it will require a few attempts to be dialed in and because of this I figured it would make the most sense to purchase a system and tune myself. Am I thinking correctly? I appreciate your master tuning experience.

 

Your right on your thinking, the speedo can remain cable drive and the ecm can either use a 2k ppm optical signal or the additional parts 4K ppm magnetic pulse. I haven't done that same combination it will take some data logging to refine be fueling. Or to get up to speed foster get a dynamic efi ebl p4.

 

Thanks for the education. I was leaning toward the ebl so your endorsement deals the deal. I guess we can get down to money then. I actually have an extra ecm, so would you sell the harness separately? If so, what's your "this guy is here today ready to deal with a minuscule amount of cash in hand"? Actually PayPal, but you get my drift. Feel free to pm me if the price is so low you're ashamed to post it.

 

$250 shipped without the ecm

 

Sounds good. Let me know your PayPal and I'll get you paid.