7875 + 5.9 + E85 + Megasquirt

subcom · Jul 18, 2026

turbovan said:
what you’ve documented has helped me a TON, and the whole community as a whole. Thank you!

Can we get any info on the new setup? Are you going to build that LC9? What trans?

Thank you! Yes, the LC9 and I’m leaning towards a PowerGlide with a Transbrake and 1.80 first for simplicity sake. I’ve considered a 4L80e but that would require tunnel surgery and cost a lot more to build vs the PG.
I want to do twin turbos, tucked up under the front fenders behind the headlights. I’m considering 3584s. I’ll stick with E85 and the MS3Pro. I think most of my EFI wiring will be a direct transfer to the LS since I was already using LS coils, injectors and throttle sensors.

TT5.9mag · Jul 18, 2026

subcom said:
Thank you! Yes, the LC9 and I’m leaning towards a PowerGlide with a Transbrake and 1.80 first for simplicity sake. I’ve considered a 4L80e but that would require tunnel surgery and cost a lot more to build vs the PG.
I want to do twin turbos, tucked up under the front fenders behind the headlights. I’m considering 3584s. I’ll stick with E85 and the MS3Pro. I think most of my EFI wiring will be a direct transfer to the LS since I was already using LS coils, injectors and throttle sensors.

Oh it’s on like donkey Kong now. I like the plan. I did an LC9 and 4l60 in a 56 nomad for a customer and stock it was great. Tons of what I will call driver quality power. With twins you’ll have rocket ship. I endorse this plan.

dadodgekid · Jul 18, 2026

Agreed!! Lol

subcom · Aug 3, 2026

If anyone is doing a SBM turbo build and interested in using any of my parts, everything is for sale. Hit me up directly before I start listing them in classifieds.
- Edelbrock LA EFI intake/rails
- Edelbrock 90 elbow
- camshaft and lifters
- hot side with headers
- cold side with blowoff valve
- VS Racing turbo billet 7875/1.25 AR gen 2.5
- crank trigger/pulley
- matching crank trigger Cherry hall sensor and mount bracket
- Custom D585 to Magnum valve cover coil mounts. Plug wires, coils.
- Kevko M322 Pan/pickup with dual turbo drain bungs for twins
- Stainless 4” downpipe, ugly welds and all. Won’t fit most torsion bar cars.
- SFI 5.9 magnum flex plate and bolts.
- New Blueprint harmonic balancer
- Alum water pump pulley
- CVF Water pump
- Mini starter
- EQ Magnum heads complete top end; heads, adjustable rockers, hardened pushrods, valve covers.

Probably missing a few things but that’s the majority.