View Full Version : Darts new SHP block
Dart has a new SHP block coming out set up for a one piece rear seal crank. In a 4.000 and 4.125 bore block SBC 350 mains.
TheEngineer
12-14-2009, 11:04 AM
Dang it! I just sold my 3.875" stroker crank for an 1-piece rear seal because I couldn't use it in anything but an LT block. I sold it too cheap also!
Warren
rdy2fly
12-14-2009, 11:57 AM
I have one of these blocks on back order. I am a worried about the 350 journals in a stroker application. I will be doing a 434, if I ever get my block.
TheEngineer
12-14-2009, 02:30 PM
I have one of these blocks on back order. I am a worried about the 350 journals in a stroker application. I will be doing a 434, if I ever get my block.
Many stroker engine builders prefer the 350 main journals.
Warren
zipper06
12-14-2009, 03:24 PM
I wouldn't run anything bigger than a 350 jurnal on any small blk. In fact i run bear spacers on the 400 blocks and have for over 25 yrs. REASON, bearing heat, in fact NASCAR runs even smaller mains, i think Hink said they were running 2" mains VS 2.450 mains that a 350 has.
Hey Warren, didn't you know you could have bought a 2 piece adaptor for the crank you sold for less than $25.00.?
JMO
Zip.
I wouldn't run anything bigger than a 350 jurnal on any small blk. In fact i run bear spacers on the 400 blocks and have for over 25 yrs. REASON, bearing heat, in fact NASCAR runs even smaller mains, i think Hink said they were running 2" mains VS 2.450 mains that a 350 has.
Hey Warren, didn't you know you could have bought a 2 piece adaptor for the crank you sold for less than $25.00.?
JMO
Zip.
I don't think you can put a one piece seal crank in two piece seal block as I don't think they make an adaptor for that one.
zipper06
12-14-2009, 06:09 PM
OOP!!! My Bad :oops: :oops: :oops:
Not enough sleep lately, Sorry Carl.
Zip.
DRTRCR22
12-14-2009, 08:57 PM
If you go back and read Hink's post again, he is talking about an adapter for a one piece crank in a two piece block... I am not familair with an adapter for that setup either.
I do however have the above mentioned adapter for my two piece early crank in a one piece late model block, and it works very well
I really expected leaks and problems installing it, but it went in easy and so far has worked really good without a flaw...
Actually Carl there are several companies making them.
Zip.
Here's the china version, but you'll have to make an alienment bar to drill and tap the holes, or buy one from Speedway motors.
http://cgi.ebay.com/ebaymotors/REAR-SEAL-ADAPTER-1PC-BLOCK-2PC-CRANK-350-SBC-RP_W0QQitemZ230404297526QQcmdZViewItemQQptZMotors_ Car_Truck_Parts_Accessories?hash=item35a52a9336
An American version.
http://www.race-mart.com/items/products/race-mart/RMT800-detail.htm
Both Canton and Moroso makes them also and they are for sale at Jegs,Summit and Speedway motors, and the aleinment tool cost $22.00 on top of the adapter.
Dang it! I just sold my 3.875" stroker crank for an 1-piece rear seal because I couldn't use it in anything but an LT block. I sold it too cheap also!
Hey Warren, didn't you know you could have bought a 2 piece adaptor for the crank you sold for less than $25.00.?
I would say the adaptor your talking about is for a one peice seal block as I know about those ones and if Warren had a one piece seal block he would be all set, I have used quite a few of those adaptors on one peice seal blocks before.
Man you had me confused for a minute LOL
zipper06
12-14-2009, 10:12 PM
:oops: :oops: :oops: ,
Sorry Carl/guys i was asleep at the wheel on that. I can't delete the post but i removed it.
Zip.
:oops: :oops: :oops: ,
Sorry Carl/guys i was asleep at the wheel on that. I can't delete the post but i removed it.
Zip.
I though you had me on that one!!!!!!!!!!!!!!!!
TheEngineer
12-16-2009, 04:23 PM
I
Hey Warren, didn't you know you could have bought a 2 piece adaptor for the crank you sold for less than $25.00.?
JMO
Zip.
Actually, I didn't know that! I need some photos to see how that adapter works. The 1-piece cranks have that really large rear hub the seal slips over.
But, I've got me a new Little-M 427 stroker put togeter for next season. Selling that 1-Piece rear seal crank helped pay some on the new engine.
Warren
DRTRCR22
12-16-2009, 04:47 PM
Warren, the 2 to 1 adapter is machined in two pieces, and comes apart to put the two piece seal inside of the adapter top and bottom.
Then you bolt the adapter together around the two piece crank rear journal with included allen head bolts.
Then set the entire assembly into the one piece block and bolt you other main caps in.
Then bolt the adapter in place just like the one piece flange cover would normally bolt in.
Easy and clever way to retro cross your old crank into a new block.
Jim