.... because I can't find a small block Chevy crankshaft with the following specs:

4340 Forging
Stock stroke (3.48")
One-piece rear main seal
Anyone but Scat (extremely bad experience so no more of these for me.)

I thought this would be easy. It turns out that all the cranks I've found that are 4340 steel have a two-piece rear main seal. The only one-piece rear main seal cranks are strokers (3.75").

Does anyone know of such a crank?

Willie

 

Something like this:

http://www.cnc-motorsports.com/produ...471&CtgID=8469

Or are you thinking more high end? Crower? Callies? Cola? Lunati?

 

Thanks. I forgot about Eagle. I believe they are "equivalent" to Scat. I'm looking more for a high-end crank. Here's what I know to date:

Crower?
I've left multiple voicemails and have not received a call back.

Callies?
They do not make it. Confirmed via phone. Of course they could fab one to the tune of $2000.

Cola?
I've heard good things about Cola. I'll have to search to find a distributor to ask questions... Thanks!

Lunati?
I've heard they don't make one either but have no confirmation.

Willie

 

You can always run an rear main seal adapter. (1 pc RMS block, 2 pc RMS crank)

 

Cola looks promising:

http://www.racenet.net/eng/cola-cranks.php

They don't post their prices, so..... you know what that typically means.... I'll have to call in the morning. Thanks again!

Willie

 

Alright, I did some digging for you, Willie.

Lunati crank (not sure about the material, I believe it is 4340, though), make sure you see the note at the bottom of their page.

http://www.holley.com/HiOctn/ProdLin...CS/RaceSB.html

And for your viewing pleasure, here you are, Willie, Titan-Cola crankshafts (you can call them if you want to verify anything):

http://www.titancranks.com/

Looking at the real top end guys (Childs & Albert, HTC, Sonny's), they don't list the rear seal, so, I don't think it's that uncommon for top enders to list the RMS.

Was there a pun intended in your title?

 

Just call Cola and ask. 818-547-3600 Although it looks like they definitely do. http://cgi.ebay.com/ebaymotors/ws/eB...916980495&rd=1

Or Lunati; 901-365-0950

I've had good results with e-mail contact with Crower, Brian Crower usually is the one who answers back.

 

I appreciate the effort guys. Here's what I've found.

Lunati does not make one with a two-piece rear. It's too early to call Cola. But I did call Race Engineering (Florida), a contact I got from Lunati. They told me Cola is no longer is business!! They advertise a two-year guarantee but what good is it if they're no longer around? I'll still try calling after they open.

Any opinions on a forged 1053 crank from GM Performance? They ARE a one-piece rear main design.

Willie

 

Cola no longer in busines??? That's funny; I talked to them on the phone about a week ago about a somewhat less run-of-the-mill requirement than yours, and they seemed more or less a going concern at the time. But I could have been hallucinating I guess, wouldn't be the first time; remind me to watch how much coffee I drink before I go calling people.Which one do you really need?

Last I knew, the GMPP HT383 crank was made by Cola. Maybe it was just more of me on drugs though.

 

At least I was told that Cola is no longer in business. I will attempt to call them later this morning.

I need a one-piece rear, found on the newer (1986? - ) small blocks. Apparently, everyone likes to stroke these when replacing the crank -- more power for no more $$$. I'm looking for a stock stroke, 3.480", not 3.750" with a one-piece. Basically, this is a replacement for the stock piece, only in a 4340 forging.

Willie

 

Cola is listing one on that eBay auction right now exactly like you are asking, except it's for 3.500" stroke instead of 3.48"; that would add .010" to the rotating assy height, which would take out that much deck clearance, if you can tolerate the extra cubic inch.

 

Okay, I just talked to Cola. Alive and well. So I was given misinformation. I guess this happens occasionally. In fact, they had the crank I am looking for. It's been ordered!

I checked out the one on e-bay. Looks good but with my bad experience with a prior Scat crank, I felt I had no choice but to order a new piece from the manufacturer, for documentation if anything. Thanks again guys.

Willie

 

So does this mean you're dumping the 305?

Or you just rebuilding it

 

Rebuilding. I was lucky. The crank snout snapped at idle. Bent most of the valves and pushrods and messed up the timing gear. That's about it.

Willie

 

Willie,

What blower are you running?

 

F1 with cogs.

 

how did the case with Scat go?

 

when u got some time Shoot over to camaroz28.com....there are more then a few blower cars on that site and the crank snout snapping not "common" but its well known over there....

Was it loud lol