I'm going from a 454 (externally balanced) to 540. I haven't completely made up my mind on which crank to run, but I'm leaning towards the lunati sledgehammer"SEE LINK". What flywheel do I need ? I know I need Internally/neutral balanced , but other than that will any bbc 168 tooth, work. What's the standard bravo drive coupler bolt hole pattern? 11.00?
Any help is much appreciated, thanks

Crank shaft options

http://m.summitracing.com/search/par...range/750-1000

Could rely use some advice. Also I got home and measured my coupler it's 12.5 center to center bolt pattern..... Wtf? I don't see a flywheel summit with that pattern.

I think an 11" clutch uses a 12.5" bolt pattern..

I just bought one of these for the "budget" engine currently in my boat...

Bravo coupler fit fine...

http://www.jegs.com/i/JEGS+Performan...01205/10002/-1

Well that would damn sure be the cheapest part I bought for this thing so far . Is it suitable for my set up. Price is scary low but I'm only looking for what works/makes sense.

Funny how a 454 cam swap turns into a $10,000 + 540 build. There's no money left for the NOW much needed marriage counseling.!!!!!

Marriage counseling is cheap compared to a divorce....how do I know? Do the build and budget for the marriage counselor. The marriage counselor will be similar to CMI's, you just plan on this as part on the upgrade. You can then wait 6 mo and then get the CMI's. Can I send you a bill?

Got mine from CP performance #755-8613 steel. Not cheap though.

Hard to say... I bought it solely on price...
Had the balance checked and it was darn close. Everything bolted up just fine. but yeah... it IS made in China so who knows...

Just use a std 454/502 flywheel and have it balanced as part of the rotating assy.

Thanks guys are all bravo couplers on 12.5 bolt pattern?

Any 168 tooth wheel will work as long as it's not for a 454. All the bravo couplers have the same pattern.