SB2 in a street car - Lateral-g Forums

ArisESQ · #1 10-25-2007, 03:15 PM

Has anyone here run an SB2 motor in a street car? Any experience with this?

deuce_454 · #2 10-26-2007, 01:17 AM

i was close to buying one from a nascar "chop-shop" think they were called excessive motorparts or somthing, but was advised against it here on this board because most of the heads out there are test heads fron cup teams that are not to their liking, and really is built to match a specific intake and run restrictor..... but if you can find a whole setup on racingjunk you should be good, just be suere to get a set of matching headers!

i have seen some built for pump gas, 410 all aluminum sprint car engines on racing junk that would be a good ticket... but i went with an LS1 and a t70 turbo as it would make comparrable horsepower, in a more streetable way-.. at half the cost..

Payton King · #3 10-26-2007, 06:17 AM

The have a 69 convertible that they built in 1999 that runs a SB2 motor. They took it on a couple of power tours.

The way I understand it is the best way to make those motors streetable is to make a stroker motor. Jimmy Johnson's 67 camaro is running an SB2 motor. They are taking a cup motor and lowering the compression and stroking it out to 400+ inches.

www.racingjunk.com is a good site for that kind of stuff. Another good option if you are looking for that style of motor is an 18 degree 9:1 busch motor.

I have a friend that has one for sale complete from oil pan to carb with a 5 stage dry sump. Kinsler individual runner intake and 2 new turbos.

PTAddict · #4 10-26-2007, 08:59 AM

One thing to be careful of with these motors is oiling. The expectation was that these heads (SB2 or 18 degree) would be used with dry sumps - if you're using a wet sump, make sure you restrict oil feed to the top end so you don't accumulate oil in the heads over extended high RPM pulls, which will starve the bottom end.

Mark Stielow built an 18 degree motor for his Thrasher project about 7-8 years ago, and as I recall he toasted the bearings at One Lap of America because of the oiling problem.

Payton King · #5 10-26-2007, 09:18 AM

has an 18 degree motor as well

Blown353 · #6 10-26-2007, 10:13 AM

One issue usually associated with the used Cup engines is that the factory engine mount bosses on the driver's side have been milled off for dry-sump pump clearance which makes it a necessity to use motor plates. A friend has bought probably a dozen used SB2's from RCR and they were all this way.

Another issue for street use is that often the stock oil filter provision is gone too since they run dry sump with a remote filter.

ArisESQ · #7 10-26-2007, 10:39 AM

Hm. Thats a lot of stuff to consider.

So I have a couple other questions then I guess...Sorry if these are kinda dumb.

Is there anything wrong with doing a dry sump on a street car?

Is the only difference between a small block and an SB2 the design of the heads? Would I be able to buy a standard small block short block and build it with SB2/2.2 heads?

And maybe some of you can give me your own opinion/advice here:

I really just want to be able to build a really stout small block, prefferably N/A, and I guess I just liked the idea of an SB2 motor. The car is not going to be driven on a daily basis, so I dont mind if the motor isn't particulraly street friendly.

Also, I don't really want to do an LSx, and wanted to stick with a small block. Maybe even a fuel injected small block.

So what do you think? Is SB2 the way to go, or should I try and convince myself to do an LS. Thanks!

AG

Payton King · #8 10-26-2007, 10:54 AM

Hang out over at www.ls1tech.com for a while.

LS motors are light, make great power. I see where companies are doing a re-sleved LS2 block and a stoker crank and making a 441 cubic inch motor. Some are using the new LSX block (iron) and doing 454 ci.

Very driveable 427 ci LS motors are making 500+ rwhp. New Technology is a good thing!

deuce_454 · #9 10-26-2007, 03:18 PM

thats funny.. i think payton king is doing it again... i believe he was the one to talk me out of an SB2 last year... seem to remember him telling me that there were many SB2´s running arround in his part of the world.. being nascar country.... and to check out an LS engine... and personally i think it was good advice...

ArisESQ · #10 10-26-2007, 03:29 PM

Quote:

Originally Posted by deuce_454

thats funny.. i think payton king is doing it again... i believe he was the one to talk me out of an SB2 last year... seem to remember him telling me that there were many SB2´s running arround in his part of the world.. being nascar country.... and to check out an LS engine... and personally i think it was good advice...

Haha, maybe he is. I still need to do a little more research.

But I'M in LSx country over here! Seems like every decent first gen around is running an LS motor. And the shop I got a lot of my work done SPECIALIZES in LS swaps. Maybe for good reason?