Eaton newbie

[Ceej]

Greetings to the forum!

I'm CJ, a new member in Oregon.

Just picked up a couple of Eaton M-90's from early 2000ish Pontiacs. Working out the specifics to mount one on a slant six car I bracket race. Faster is funner!

Looks like I'll be fabricating a rather intersting intake to allow the bypass valve to work properly.

I'll be around the Eaton area searching and digging for info for a while. If I come up with a coherent question, I'll be sure to ask it!

CJ

[Michael]

Hi CJ, and welcome to SCH. Glad to have you aboard.

Sounds like a great project you're working on. Be sure to post some pics of your bracket racer (and the respective supercharger build).

[vinces427bb]

welcome to the site, what car?
what size is the slant-6
i'm thinking a sheet metal type intake maybe??

[Ceej]

Current mill is a 250 inch long rod stroker. 7.005" 198 rods on a 4.475" Custom crank. Been beating the dickens out of that one for the last three years. I bled the compression down by opening up the chamber a bit to dump the 11:1 Compression. Got it down to 10.7:1. It needs to drop some more. DCR was off the charts, so pulled the Erson cam out an installed an OCG #34 in there. Solved mid range issues, but created high rpm detonation. Currently running 50/50 91 premium/110 race gas to keep the ring lands on the pistons.
It likes a lot of timing even with the TDC dwell.

I have 170's and 198's with large register cranks.

I also have some different 225 cranks. If I drop it to stock 4.125", I'll come out around 230 inches, I've also got a 4.200 crank. That might work better with my current reciprocating assembly.

I've got a set of bottom load 7 inch aluminum rods, and a set of 7.500" Titaniums. They're for a different build though. Either set would require punching it to 3.5" just to get started. The Aluminum ones can't be run with a cooling system. The Titanium probably could, but won't.

CJ
74 4dr plymouth valiant