I have a thunderbolt V, 806960-3 electronic control module
what is the RPM cutoff, does anybody have the documentation for these modules?
what is P.T.??


what engine is the P.T. for?
bravo
mag
Alpha
Thanks for your help, any and all Info is welcome. I made a 454 gen V with about 9.5 compression, vortec Head large oval ports, 100cc chambers, flat top pistons, with 01-445-8 comp cams.
It is a roller block, with no mechanical fuel pump, it is marked with a sticker 2006 crate engine manufacturer for gm.

The Rev Limter for a 7.4 will kick in around 4750-4800rpms

Thanks Griff! I was hoping to get 5000+ rpm, was shooting for 5400, cam, intake, exhaust, head work.
I'll go with the thunderbolt IV v8 24 to find my max rpm after breaking it in. If it's around 4750, I will use the thunderbolt V, if it's around the 5000+ I'll have to stick with the thunderbolt IV.
I would still like to know what engine model the P.T. is. I did locate the wiring diagram.

A TB V module from a carbed HP500 rev limit would be 5400ish.

I have a IV. pretty sure no rev limit on it. Make an offer if interested
Chris

Yep, no rev limiter on TB IV's. The Merc Racing blue engines with TB IV's had an add on component rev limiter.

I studied the Tb IV bbc profiles, I decided to go with the v8-24, and don't have v8-24s and the v8-24r and the 350s' v8-22a
The v8-24 seems aligned with my build, but I was thinking the TB V with advance/retard adjustment will be Interestingly enough. My compression is ~9.5, I want to run 90 octane.
I have 2 of the v8-24 and non of the others, pm me your model and price.

you can also drop a delco est distributor in with a coil and it will rock we use a ton of them and they are super reliable and very hot spark the high idle timing is what most engines love

Yep, this is what I did on my old carbed Merc 5.7 when the TB module died...