CLASS RACER FORUM - '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker?

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Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

What wheel offset do I need to properly fit a 15x10 with a 9x30 radial in the rear? I'm looking at some of the black versions of the RC Components "Fusion" wheels...

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Quote:

Originally Posted by 6130 (Post 645020)

Dan, the sedans are J/K/L cars, and the wagons are K/L/M cars. I'm not interested in running a sedan as an SS.

14.95 is WAY off the index(es).

The others are telling me to dump the 4L60E.

What do you mean by a "Truck case"? Are you talking about the differential case? I'd be running a spool.

It's been about 25 years since I was underneath one of these things- they use the same triangulated 4-link that GM used in all their other mid and full sized cars for 30 years or so, right?

I think the stock rules allow relocating one of the mounting points on those to move the instant center of the rear suspension to improve the geometry.

You use an OEM SS rear sway bar and TWO airbags? I thought I remember people only using one air bag back then. Are there better rear sway bars available so that I can get away without having to run any airbags? I can tune a sway bar like that with washers.

What about headers? I See that Hooker makes ceramic-coated headers with 1-3/4" primaries that sweep up and over, into a 3" collector.

In any case, thanks for your input.

The Caprice Sedan can run J.
The SS can only make K.
The wagon is a natural N car..can go M.

As for my wagon. It is set up for towing the SS.
FI grins bracket raced it ina hot day and Rand 14.95 that evening.
All stock engine with 3.73 for towing.

The Tahoe and truck came with thicker 4L60E cases.
Also a 6 quart oil pan. Which I have on my SS.

Mine has a Yank 4400PT Locking converter.
Mine is still licensed and can take for a car wash.

Have a choice to Lock up or use OD without screaming the engine.
However limited to 4700rpm stall on a 10 inch converter.
8 inch can go where you want with 5% top end slip.
Just turn off the Files to prevent Lock up feature up.
Using TunerCat and ODB1 tuning.

When you go under the car to see the chassis.
It will be familiar and 96 was last use of that chassis series.
It was introduced in 1964 for the Intermediates.
Then late 70’s 90’s Impalas. Rebodied 91 to 96’s

As for airbags.
You can get away with one on the right side.
Having good luck with both and can adjust the hit.

For cams big choices. Talk to Bullet cams.
NHRA standardized on the F-Body cam specs.
Do not know why.
If we had to use the B-body cam would put us N or below.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Quote:

Originally Posted by 6130 (Post 645023)

What wheel offset do I need to properly fit a 15x10 with a 9x30 radial in the rear? I'm looking at some of the black versions of the RC Components "Fusion" wheels...

The SS and Caprice came with 2 axle lengths.
SS are a few mm longer.
No problem fitting 30x9 slicks.
I have rare Centerlines wheels with 3.5 backspacing.
Wagons have even longer axle.

I do have a complete 8.5 rear for sale.
4.56, Moser axles, ARP studs, mini spool.
disk brake to disk brake.
Have a PowerTrak in box.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

My bad- I was reading the wrong line when I scrolled right to see the pounds per horsepower.

It is in fact 14.87 pounds per horsepower for the '94-'96 Chevy and Buick LT1 B-wagons, making them natural N cars, which would save me the expense of a roll bar and 2-year driver's harness.

I'm gonna go back and edit my previous posts, to eliminate the incorrect information.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Okay, so the N/SA index is 13.00, and the record is currently 11.99 @108 or so. Sounds like I'm looking at about a 5.57 rear gear for starters...

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Quote:

Originally Posted by 6130 (Post 645048)

Sounds like I'm looking at about a 5.57 rear gear for starters...

I really doubt it would want that much. Maybe 5.13.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Billy Nees. I have one of these wagons in stock.
Hmmm. Winter project?

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Az Classic car site on facebook has a 92 Chevy Wagon, running driving with lt1 for 2800. Car looks pretty good.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Quote:

Originally Posted by GUMP (Post 645051)

I really doubt it would want that much. Maybe 5.13.

Put 5.13’s in my SS.
Running 28inch tire, locking converter at 98mph.
If I go with a 8inch converter will go to a 30 inch tire.
Turn off the lock up.

N/SA you will be close to 4500lbs.

Re: '94-'96 GM B-body 260/299 LT1 350 sedan or wagon stocker

Sounds like you're doing your homework..That's good.
Just be careful who you listen to..This won't be a pure stocker.
OD trans planetaries and clutches and LU converters have no business in a good K/SA car. You'll leave too much ET on the table.
I think you already know that. ;-)