Now you have me thinking
 

Cubic inch calculation=3.147 x radius squared x stroke x 8

piston bore 4.180
stroke 3.60

395.89 CI

another easy formula so you can use bore diameter
 

3.1416 (pi) x bore squared x stroke x 2.

That said, I am assuming you have a 9" deck height on the SB2? If so you would have a 1" compression height on the piston?

9" deck - 6.2" rod - 1.8" (stoke/2) = 1" CH

that is a short piston ;) Every time I would build up a 347 Ford (stroker 302) which has a 1.1 CH I would always think that piston seemed so short. The good news is your rod to stroke ratio as I mentioned before is better than a 347 and even tho' a 347 wasn't all that bad (1.59) they would rock the pistons a fair amount in high rpm engines and wear the skirts. I suspect having less side load from the longer R/S will help keep the pistons from rocking so much. I am a big fan of R/S values in the 1.7 range if you can't already tell. It does definitely keep the piston weight down which is good at 8500 rpm :unibrow:

Heck, the LS7 has nearly as short of a piston and much worse R/S and I bought a car with one so what do I know hahaha. 'Course 8500 rpm isn't in my future anytime soon.

Nice updates - that motor is going to be sick!

What kind of EFI you going to go w/?

You are correct
 

Very high piston pin, will be into the lower oil ring, no big deal. Very short piston skirt...like all NASCAR motors.

I will have plenty of photos once the pistons are made.

Speaking with Mike Norris now. Possibly a FAST system. Was going to convert it to coil over plug and run a LS1 box, but they only go to 8,000.

:lmao:

That's what I was thinking too Aaron

:knokwood: and to think I only hit 6100 at Gingerman, lol.

Payton, this thing is gonna be sweet. Can't wait to see it come together.

Dude, found your thread. I love this pic right here--that is awesome. Looking forward to seeing you work your magic on this one. All we ask is that you bring it to at least one West Coast event when it's running.

D

Been some time since I have posted here
 

Glad your back DFresh

Have lots of pictures to share and seem like no time to post them up. Here are a couple of pics of a quick motor mock up and to see if my Cup headers are going to work.

http://i1138.photobucket.com/albums/...ps1848128c.jpg

http://i1138.photobucket.com/albums/...ps6302ae0c.jpg

http://i1138.photobucket.com/albums/...psff36975c.jpg

I wanted room to drop the motor down
 

So Jake notched me a place out of the lower cross member

http://i1138.photobucket.com/albums/...psa425b03c.jpg

http://i1138.photobucket.com/albums/...ps4e6ba821.jpg