4.5 inch stroke crank???
 

I was on FlatLanders website looking at stroker kits and they list a 4.5 inch stroke for a 454 anyone running one?????it gets you to 525 cubic inch......bigger is better!!!!right????

Doesn't a 4.5" stroke require quite a bit of clearancing?

you might run into a problem tring to install a 4.5" stroke in a short deck engine, you will need a tall deck 10.200 deck height with a bit of grinding on the pan rails for clearance of the rods. then youll need some .400 long rods and pistons, heck..might as well make it a 572 or 588 for the same money

4.5 Stroke
 

Dyno,

If your trying that in a 9.8 standard deck,
it's to much rod angle.

Some guys do but it's pretty high risk.

10.200 tall deck on the other hand is just
fine. Add a 4.5 bore with that 4.5 crank
and you have a 572 ci.

Cougarman

thanks guys guess I'll stay with 4.25 and 496CI......

A 496" engine isn't too bad for a boat because it runs low RPM's (5500) for it to be unreliable. I have know a few guys who've run them in there offshore boats---even with blowers. I think Doctor Dave even ran a pair at one time in his 35'Cig without any problems.

Mark thanks !!!!I stopped by the shop last night nobody home.....hope things are coming together for you!