DIY LTCC or similar system for LT1s

[Fast355]

Fast 335,
Sounds too expensive for me. $1200 just to run like it normally does anyways. Add to that obd2 tuning program and programmer for the new ECM to get it running right for another $1000 + time. I could simply drop in a LS engine and computer instead.

My ulterior motive is to make my ignition system into an ion sensing ignition system. That way, I can directly measure cylinder pressure and produce the most optimal spark timing for any condition on the fly. The optispark signals will need no decoding to produce a 1 degree accuracy for my system. The LS system provides me with no such decoding output that I can splice into.

0411 runs better and the Blue/Green 1 meg runs even better and there was a 16 rwhp power gain at redline in my Vortec 5.7 going to the Coil Near Plug setup. I am currently running a Flex Fuel sensor and E85. Fuel change alone netted me an additional HP/TQ gain on the dyno.

I had used 6.0L D585 coils at my disposal but the rest of the parts were relatively cheap. I only bought the coil brackets, mounting hardware, the crank reluctor, crank sensor and the distributor cap from EFI connection. Seem to remember my bill being less than $500.

I already had HP Tuners and at the Time I bought it was under $700 with credits to tune 4 GM vehicles.

If I had a LT1 to start with I would not consider anything under a 6.0L and that engine would cost you $2500 for a high mileage engine needing some work. You would need another $1000 in parts to swap it in on top of the pullout engine with harness. I am right in the middle of a LS 6.0L swap as I type this and it is time consuming and $$$$.

The F-car LT1 I messed with put down 320 rwhp and 340 rwtq through a M6. 150K mile stock longblock with a spring/retainer/guide plate/pushrod/1.7:1 rocker/24x coil per cylinder 0411 swap. The car had a Moroso CAI kit and a catback exhaust.