Ring Gear Tooth Count

Ok guys !!! I need to slow my out of water revs. I am hitting 8000 plus when I come out of the water, normally I run 6200 to 6400 ina heat, but in shit water I end up sucking alot of air in the straight aways. I'm thinking of switching to a flywheel from a flexplate. The problem I see is the flexplate is 164 teeth http://www.summitracing.com/parts/SCA-FP-460-SFI/ and the flywheels have 184 or 176 teeth http://www.summitracing.com/parts/CTF-700280/ .

Do I need to get a 4/5 speed locator plate from a manual truck to do this ?

Jim,
The difference in starter location between a 164 tooth auto Trans and a stick setup with the 184t wheel is approximately .6655" (radius from the crank center)
I can make you a custom starter locator plate, but your flywheel housing (for the boat) will stlii have the wrong (smaller) location. I will assume the starter bolts to the boat's flywheel housing.
We could make a 3/8" thick plate with the "new" starter location and bolt the starter to that, if you can't get a different flywheel housing.
Just brainstorming....
Keith

Why not use a rev liniter?

richter69 wrote:Why not use a rev liniter?

Makes sense to me....but I ain't no boat racer.

I don't see changing to a flywheel will help any. Rev limiter.

I can put almost any chip in the box and it will walk right on past it.

MSD?

Never saw one just run right past a functioning rev limiter...but, again, I'm not a boat racer. What type limiter are you using?

f I puta 6800 in it my tach will show a spike of 8200, if I put a 7200 it drops to 7800. The box is a 6AL and the rev limiter does work. I have tested it a few times with low rpm chips.

I've broke driveline parts in the past at wot and never had one rev past the set limit, sometimes the chips can be off some also.

richter69 wrote:I've broke driveline parts in the past at wot and never had one rev past the set limit, sometimes the chips can be off some also.

Same here. I've busted rears & trannys with no over-rev.

Lem's a nautical sorta dude....Wutsup here, Lem?

The FP-460-SFI is an external bal. flexplate.
The FP-460A-SFI is an internal bal. """""""""".

Whatever the tooth count/dia. is on the Scat unit...it's the same as the stock flex plates...the heavy manual trans. flywheel is a different animal.

I do not think a flexplate/flywheel change will address your issue.
Can it be heard when the engine is susposed to be on the chip?

Yes every chip on the lower rpm can be heard ! Say I put the 3500 chip in, it hits it and wont go above. I put the 4500 in and it hits it and wont go above. I put the 5k in and same thing, on the trailer. I put the 6400 in and I walk right past it. Same with the 7200 chip ! I bought new ones thinking they were old and bad. Same thing they walk right on by !

Using an MSD ignition tester ( the one that simulates the engine running) would help pinpoint this issue.
That tester is great for things like this.

There is either a noise issue, ground issue, or problem with the MSD box.