[CraigG.]

Ok - not in my lifetime - Appreciate the dedication and effort though.

Last question - what ET benefit from the change from a T400 w a brake to a Metric 200 with a 3400 lb - high 9 second car?

Thanks, Craig

[besserspat]

About 30 years ago we bought a 327 SJ SBC out of a Stock eliminator 67 Camaro.

Even if we had decent but somewhat limited experience with SBCs back then. Tearing the engine apart was an eye opener.

The attention to details, oil control, acid ported heads and iron intake... I remember all the pistons were full of stress cracks from revving 9000 !

The cam was quite something , was a Crane and I don't remember the exact specs but they were l IN 328 dur @ .006 with .390 lift and EX was 338 dur @ 006 with .410 lift. in that small journal 327 the idle was rougher than anything we've owned before.

Peter

[CraigG.]

How much ET benefit would come from a change from a T400 with a brake to a 200 metric with a brake for a high 9 second 3400 lb car?
again, just curious

[Stan Weiss]

Originally Posted by CraigG.

How much ET benefit would come from a change from a T400 with a brake to a 200 metric with a brake for a high 9 second 3400 lb car?
again, just curious

Just talked for someone who has a 427 BBC stocker which runs 60’ 1.30, best et 10.13. He runs a T400. His guess is .07-.08 improvement with a T200.

Stan

[Stan Weiss]

Speaking of et differences. How many of you use a chiller before your pass?

Stan

[sdbob]

Once I heard going from m40 to m35 you gain approximately 25 hp. I've never did testing though.

[b-man]

Originally Posted by sdbob

Once I heard going from m40 to m35 you gain approximately 25 hp. I've never did testing though.

It’s probably only about 8 to 10 horsepower.

I’ve read that it’s about 34 for a TH400, 26 for a TH350 and 18 horsepower for a Powerglide. And most of that goes straight out the window when you’re talking transmissions loaded with lightweight racing components.

I guess it depends on the source, but it’s kind of a stretch to think you’d lose 25 hp with a TH400 over a TH350.

In acceleration is when you’re seeing the biggest difference (racing) whereas just rolling down the highway at cruising speed maybe a couple horsepower difference at best.

[turbo69bird]

Used to be a guy I think his name was Tom Kilgore , he made a special TH400 that worked similar to a 727 torque flite. Had parts removed a lot of parts lightened. I think Tom de mauro did a story on it in HPP or maybe it was in super stock and drag illustrated. When Steve collision ran it. (Great mag and Steve was a a great guy .

At the time I think this trans was $7k w/o converter and this was mid to late 90s if I remember correctly. It used a special stand tube so it had just the right fluid level every time .
Every aspect and I MEAN every is sciences out ona stick eliminator car. Many run drum brakes and back them off for ZERO rolling resistance. Back in the day they used tricks like backing the nuts off on the front shocks on Camaros and birds so it had 1 inch or no resistance travel , metered vacuum
Leaks to give the carbs more CFM and jetted up for it which is why they are always clearing the cars by revving them most suspension sets up get started w stock class. Moroso made it business in finding the last stock thing and selling it to prople bracket racing .

[turbo69bird]

Stock class is like
The military. If you know what they are doing it’s old tech by then. �� they don’t give up secrets easily

My buddy who races stock had hundreds of head castings he flowed , usually 50 converters in the shop, same w ring and pinion gears , uses moroso climbing gear oil
In the smallest amounts possible , centered iron slipper clutch’s that lock up at top end on the stick cars , your almost always better off buying a scienced out sticker for stupid money vs trying to build one because you can’t imagine what went into that set up.

[BILL BOWMAN1]

Amazing class. Just wondering, do you have to run the engine/trans that the car was born with? Say you had a 396 4 speed Camaro, could you run a small block automatic if you wanted?

[Skip Fix]

When I talked to john Schloe in the 90s about his RAIV motor. he ran it out the back door about 7000 rpm-and they still required stock rods back then!

Lots of tear downs by tech to verify specs I would see in the pits at bog events.

Bill I think if the SB had all the correct casting numbers intake, heads you could as long as it was as a SB car was delivered.

Jason line's GS 455 Buick was something to see launching! https://winlightnews.com/2020/12/18/...n-super-stock/

[Formulas]

I have a friend that used to race a high level
VW he had 3 piece pushrods and would size a McDonald's straw with melted pinched ends to fit inside the pushrods (lighter than oil)

he had to have a certain weight bias on the scales had a piece of axle in the drivers door with the door open the weight was slightly foreward and in spec door closed favored the rear, he always weighed door open LOL

must win final? drop all but a quart or so oil out of the transaxle

also he had to start the run with his fan belt but would leave it loose enough to pop off during the run, keept rpms down on burnout

i probably forgot a few of his tricks

[CraigG.]

Ok - how do they run on their dial and slow the MPH consistently?