Stroker crank install
 

Look at the poor crank! I couldn't believe my eyes! I've seen cranks with 1 hole or 1 plug, but this is beyond my comprehension. The picture doesn't show the extent of the holes very well... they are different diameters at different depths. The flywheel had material removed as well.

One thing for sure, right or wrong, the guy spent a lot of time on this.

www.strokermotor.com

DES DG3-425 4340 Nitrided BB Chevy 496, Ext. Balance, 4.250" Stroke, 2.20" Crank Pin, 6.385" Min. Rod Length, 2pc Rear Seal

Also, everybody and their brother told me I was going to have to clearance the block. I wanted to do this before sending the block for a bore, so I just layed it up there (with some bearings and oil) and went to start marking off where to grind, and, and, and, I can't find anyplace to clear?? there's at least an eighth inch clearance here. Are these H rods that much smaller? Or am I missing something?

4.25" in a BBC stock block does not need to be clearanced.

Mine did.

I'm guessing the "I" Beam rod with the thru bolt and nut need the clearance work. I don't have one handy to compare, but the H beam appears to be a lot smaller in that area. If so, it's good info for the next guy... either pay $ to clearance the block or pay $$ and upgrade to H beam rods. If you need longer rods anyway then it's a wash.

Mine didn't.

My machine shop which does mainly does race car motors, hundreds if not thousands a year told me that some block castings need it and some don't, even from the same generation/year/etc. The only way to know for sure is to mock it up, or clearance it anywho.

jmherbert:

Who is your machine shop?

I had to notch the block AND take about a 1/4 inch off the crank throws then have it rebalanced.

balance man should have tried to make it a internal bal. or lathe off the counter

JR Motorsports, Ankeny IA.

http://jrmotorsports.com/

Their customer service is top notch, They have bent over backwards for me more than once due to circumstances beyond their control.

Ask for Axel Andreasen, he does all of their machine/engine work. Very knowledgeable, and extremely helpful. He is busy, so sometimes he is hard to get a hold of.

The bulk of the motors they do are small blocks, but they still do a fair share of big blocks. While marine is not their specialty, they more than know what it takes to make them.

thousands:eek: How many people work there?

Maybe not quite thousands, but its a lot.:drink:

I think they did 300-400 short and longblocks last year. He told me it was a record #, and they are going to crush that record this year.

I think they have 10-15 in the machine/engine shop. They just lost a guy to a Nextel cup team. When I would have some work done, and I'd say I am not in a hurry, it'll take them a week or so. If I was in a hurry, they'd have it done in a few days.

I spent a lot of money there, though

wish we had a shop like that here