I started out with 2 400 blocks which I found on Craigslist. Both were
standard bore and appeared fine. That was until I had them sonic tested. Both had a
couple of thin cylinders. Instead of sleeving the old blocks and hoping
for the best, I decided to go all out and purchase a new Indymaxx block.
Hopefully it will be with me for a long time to come.
My stroker kit is from 440 Source. The pistons are for a 4.375 bore and the
compression will be 13.5:1 Rods are upgraded I-beams with ARP bolts. The kit is
supposed to be rated to 1000hp, I'm shooting for about 650.
Cylinder heads are
also from 440 Source. I picked up a set of their Stealth heads which I were
fitted with Crane valve springs, retainers and locks. The cam is a Crane
solid roller with .630 lift. Cam driven by a Milodon Gear Drive.
I now have
about 100 runs on this combo. Best ET to date is 10.29 @ 129mph at Speedworld in
Wittmann, AZ which is at about 1380ft. I plan on having the Stealth heads ported
soon. I'm hoping to hit the 10.0s.
I shift this combo at 5500 RPM and go
through the traps with a 28.5" tire and 4.10 gears at 6400 rpm.