GMC project: engine content. Warning, much bench racing ahead

Video's of another believer at the local track.

https://www.youtube.com/watch?v=1ltYV74tVhk

LSx motors look best in old stuff if you stack the coils together so 4 point each direction and you use longer spark plug wires. Then you can shave all the mounting bosses and with a carb manifold it looks a lot more correct.

There is a circle track class using crate LSx motors with just alternators, so your brackets are available.

Last I checked the edelbrock combo was $100 more expensive than just the manifold and the vastly superior msd branded stand alone ignition box. In addition, if the single plane manifold is what you want I have a new one I'll ship to you for $50 less than the best new price you can find so I can go dual plane instead.

Piss off everybody, and drop in one of these:

volvoclearinghouse wrote: Piss off everybody, and drop in one of these:

You posted the LT1 and I though "Hey, Mike is getting better, and not just posting stupid smartass responses anymore, this is wonderful!"

And then...

Well, I'm 50/50. Besides, we're 4 pages into this thread, you're beyond the point at which you can reasonably expect to get anything useful out of it. You gotta admit, the Stock 460, at right around 300 Hp and 450 ft-lbs or so, would hit your mark and be cheap. :-)

Back in reality, I think the LT1 is going to give you the most bang for your buck. It's the unloved mouse motor. Camaro/firebird/vette versions had Al heads, but even with the stock iron heads on the Roadbastard/Caprice versions you're really close to the 300 horse mark- and more budget-friendly. I'd be torn between staying TBI or swapping to carb, I guess whichever works out cheapest.

Of course, since you're using the A833, which is a Chrysler trans, you could swap to something from the B/RB engine family from Ma Mopar...oh, dang...this makes me 1/3 now.

volvoclearinghouse wrote: Of course, since you're using the A833, which is a Chrysler trans, you could swap to something from the B/RB engine family from Ma Mopar...oh, dang...this makes me 1/3 now.

If we count E-mails and Facebook you're way below 1/3!

I can't actually use a slant six because the bellhousing is chevy.

With the od a833's super wide gear spacing, you'll want whatever you get to have a very broad range of power. That way when you drop 2000 rpm shifting you're still in the meaty parts of power. Also, cam should be somewhat conservative so it doesn't load up in overdrive over extended periods of interstate. I have that issue in fifth on the duster unless im doing over 3000 rpm (80+)

Dusterbd13 wrote: With the od a833's super wide gear spacing, you'll want whatever you get to have a very broad range of power. That way when you drop 2000 rpm shifting you're still in the meaty parts of power. Also, cam should be somewhat conservative so it doesn't load up in overdrive over extended periods of interstate. I have that issue in fifth on the duster unless im doing over 3000 rpm (80+)

Hey that's good cam advice, thanks!

No problem. Figure i should offset the big block ford somehow.

Hey, I recommended a B/RB! Which, tuna, is not a slanty engine. It's the 350-361-383-400-413-426 (wedgie)-440 fambily.

EDIT: OK, I'm going to change my answer: L31 Vortec. Go find yourself a Weinermobile and yank the engine.

L31 applications:

1996–2002 Chevrolet Express/GMC Savana full-size vans 1996–1999 Chevrolet/GMC C/K full-size trucks 1996–1999 Chevrolet Suburban/GMC Suburban full-size long-wheelbase SUVs 1996–1999 Chevrolet Tahoe/GMC Yukon (and 2000 Tahoe Limited and 2000 Tahoe Z71 models) full-size short-wheelbase SUVs 1999–2000 Cadillac Escalade TBI L31 applications

1996 G-Series vans over 8,500 lb (3,856 kg) GVW w/ 4L80E transmission Special applications

Oscar Mayer Wienermobile Isuzu Box Trucks

I found that the intake manifold/MSD bought separately are actually much cheaper. $550 for so all in sans carb.

I also found this.

That there is a dual quad gen III with the big block valve covers and I love it.

Here's a low-miles Gen 1 L05 wrapped in a Roadmaster:

http://baltimore.craigslist.org/cto/4807637008.html

The 4l60's worth a couple hundred, scrap the body and have basically a free L05. Buy some Vortec heads and carb intake, a cam, bolt on a mechanical pump, sort the belt drive out and you're good to go, all in under 1000, under 500 if you hustle some deals. It's not a roller small block but really, does it matter?

The only thing I have heard (not 100%) is that the Gen 1+ vorttec engines were all 4 bolt mains, and the L05 is probably a 2 bolt. At your power levels this may not matter.