file.newsgroup.cars.103138 Maven / Gradle / Ivy
From: [email protected] (Jerry Bowman)
Subject: Re: Improvements in Automatic Transmissions
In article [email protected] (Brent Herling) writes:
>
>
>>In article <[email protected]>, [email protected] (Shazad Barlas) writes:
>>|> I just wanted to know:
>>|>
>>|> To wheelspin in an auto, you keep the gear in N - gas it - then stick the
>>|> gear in D... I've never tried this but am sure it works - but does this screw
>>|> up the autobox? We're having a bit of a debate about it here...
>>
>>
>>Ah yes, the neutral slam.
>>
>>I know that GM tested the old th400's and th350's by shifting from reverse to
>>forward gears repeatedly while holding the engine at high rpms. the units hold
>>up incredibly well. This is also the recommended technique to "rock" a stuck
>>vehicle out of the mud. I think the hydraulics are up to the task, but the
>>mechanicals of the driveline may object by breaking something.
>>
>>$0.02
>>
>>Ericy
>I agree about the durability of the old TH400 trannies from GM. While I
>never intentionally slamed my '68 Firebird 400 ci Conv. into gear, I would leave
>the trannie in Low (read 1st), grab hold, hit the pedal, and once the tires
>grabbed, take off. When I reached about 57-60mph the turbo 400 Auto would
>shift to S (read 'super' or 2nd) and leave about 10 to 15 foot of double
>stripped rubber on the ground. Most everyone I knew at the time was quite
>impressed with 'peeling' out at 60 MPH. The trannie held up just fine.
>Motor mounts would last about a year until I tied the motor down with large
>chains. Oh yea,FYI: Pontiac 400 ci bored 0.04 over
> Large Valve heads
> Holley 650 Spread bore
> Crain 'BLAZER' cam (don't remember the specs)
> PosiTrac, Hooker headers, Dual exhaust
> Get this (Conv., leather seats, power windows
> power top, AC, Cruise etc.)
>
> Oh yea, I also pulled the 'Cocktail shakers' (weights) from the front
> and removed the lead pellet from the accelerator pedal. (Damn US regulations)
> OH, HOW I MISS THAT CAR!!!
> -- 0-60 under 6.7 sec and about 6 to 14 mpg (well I don't miss the mpg)
> -- front wheels 4" off the ground with three quick jabs at the pedal.
> -- bent pushrods, stripped rocker studs, every 6-12 months
> ( I really wonder what kind of rev's I was turning - no tach)
>Re: Improvements in Automatic Transmissions
> Anyone seen one of these lately? I'd buy it back in a sec!!!
>
>OPEN TOP Brent
Am I the only one that smells a little El caca Del Toro here ???