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Old 05-18-2022, 08:48 PM
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R 70 Judge R 70 Judge is offline
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Join Date: Mar 2002
Location: San Diego, CA
Posts: 2,691
Default My Holley Terminator X Sequential EFI build

I’ve decided to switch my 1970 TA over to a Holley Terminator X sequential EFI along with a Holley coil near plug (CNP) LS style ignition set-up. My car currently has a ProSystems 4500 Dominator on a Victor and MSD 6 ignition. Per the calculators it makes somewhere between 660hp-720hp on race gas. I plan to switch to E85 shortly after the EFI goes on. The 100 lb injectors should give me some room to grow (Vortech YSI or Turbos later). I figured I’d share my build along with the part #’s for anyone that wants to duplicate it. I’ll answer any questions to the best of my ability.

After a long discussion with the Holley Representative he was able to design a custom system for me with the features I wanted excluding any extra wiring I didn’t need. I skipped the handheld tuner for now as I plan to use my laptop for tuning. I am still undecided of which throttle body to use.

Intake manifold:
KRE Northwind, port matched and light plenum work. Conversion by Funkhouser Race Cars using Wilson Manifolds fuel rails, bungs, and stanchions https://www.wilsonmanifolds.com/prod...c8b87930&_ss=r

ECU/Coils/Injectors/Distributor:
TERMINATOR X ECU Part # 554-152
UNIVERSAL MPFI W/ COP MAIN HARNESS Part # 558-117
J1 A/B I/O CONNECTOR HP & DOM Part # 558-400
WBO2 SENSOR, SNIPER TBI Part # 554-155
TERMINATOR X WIDEBAND ADAPTER HARNESS Part # 558-463
LS INJECTOR HARNESS Part # 558-201
KIT- FUEL INJECTOR 100 PPH, 8 PK, FM Part # 522-108XFM
KIT, 8 CYLINDER SMART COIL KIT Part # 556-127
Dist., Dual Sync, Pontiac, Black Part # 565-207BK
Holley EFI Billet Blank Cap For Dual Syn Part # 566-103
USB/CAN HARNESS, SNIPER TBI Part # 558-443

Fuel system:
TanksInc 20.5 gallon tank
450 lph Walbro Hellcat fuel pump
I have not picked a fuel regulator yet

I will update the progress with pictures over the next few weeks

Current picture:


__________________
James
1970 Trans Am

Spotts Built 484" IA2, Highports, EFI Northwind
Terminator X sequential EFI fabrication and suspension by
https://www.funkhouserracecars.com/