400 stroker cranks

[moparlover]

the whole point of you wanting the biggest stroke possible is to keep your rpms down?

gen2 hemi factory stock redline was 7000 lol.

just get urself a hemi crank and build from there :finga:

get ur 8 bolt flange and dont look back

8000 rpms you could build that in ur backyard

making your stroke longer for maybe 20 or at the outside with luck 40hp at the expense of weakening the bottom end so that you dont have to run too high rpm's sounds like money spent bad

just sayin

there are 800hp pump gas hemi's you can buy off the shelf at ray bartons

echo -- what kind of power did that low deck 540 make. I was looking to run a solid roller in the 650 lift range with a low duration. backed up with a pair of middle of the road heads and keep the RPM under the 6500 range

Would love to make a 700hp 700tq motor or a 650hp - 700+tq pump gas street engine
that way I can run a sub 4.10 gear with my 32x14.5 tires and my 727.

 

[MidTexCuda]

Ok decided to to do a 512.
I did some math and what to see if it has been done or if it would work.
4.25 crank, chevy 6.700 rod, icon dish pistons with 1.122 comp height.
Anyone done the 6.7 rod and the short pistons?

here is the math I used
4.25/2= 2.125+6.700= 8.825 - Deck 9.980= 1.155 - 1.122= .033 in hole.
That with 74cc heads and ICON pistons at 23.70 dish give <10.50 comp.

 

[EchoSixMike]

ICON pistons seem to have become pricy lately, they were quite reasonable when they were introduced.

Diamond will alter the C/H on a shelf piston for a nominal fee; they make a 1.120 piston for this application. Get the block decked square to the crank, find the true deck height now that it's square and order the C/H accordingly.

I see no reason why 6.7 rods won't work where 6.535 rods do, most folks prefer more CH though. S/F.....Ken M