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Old May 1, 2016 | 07:57 PM
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Default Rev Limiter

Do early C4s automatics have a rev limiter. In other words will car up shift if you hold it in a gear manually to long or will the engine blow?
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Old May 1, 2016 | 08:07 PM
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No Rev limiter on the engine until LT1/5.

Technically, trans should hold a gear indefinitely, if you select that gear manually, but I've seen plenty (of 700R-4's) that shift anyway.

Engine, especially if TPI probably won't "blow"...more likely it will just run out of steam and make a bunch of noise. My Mom had an '86 TPI TA when I was younger...that thing would never shift out of 2ng gear if you held it to the floor (even w/the lever in "OD"). Engine would just sort of peak out and die (accelerate no more), just barely above 5k. Ease off the accelerator a bit, boom, into 3rd gear and off she'd go again! How lame.


.

Last edited by Tom400CFI; May 2, 2016 at 12:36 AM.
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Old May 1, 2016 | 08:25 PM
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Originally Posted by Tom400CFI
No Rev limiter on the engine until LT1/5.

Technically, trans should hold a gear indefinitely, if you select that gear manually, but I've seen plenty (or 700R-4's) that shift anyway.

Engine, especially if TPI probably won't "blow"...more likely it will just run out of steam and make a bunch of noise. My Mom had an '86 TPI TA when I was younger...that thing would never shift out of 2ng gear if you held it to the floor. Engine would just sort of peak out and die (accelerate no more), just barely above 5k. Ease off the accelerator a bit, boom, into 3rd gear and off she'd go again! How lame.
Did your mom know you were doing that to her car ??
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Old May 2, 2016 | 12:20 AM
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Originally Posted by blackozvet
Did your mom know you were doing that to her car ??
It was his mom that was driving it.
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Old May 2, 2016 | 12:34 AM
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At both comments!! That was awesome!

Nah...she didn't know. I honestly think that you could have sat there all day long at WOT, 5200 RPM and nothing would have happened. I could be wrong. It wasn't that, that did the car in...it was my younger brother, who sent the car over an embankment, down a steep grassy hill and into a tree that did the TA in.

Happy Mothers day, Mom?
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Old May 2, 2016 | 03:00 AM
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I fixed the "stuck in gear" problem by massaging the valve in the governor (rounded off the sharp edges). Works fine now.
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Old May 2, 2016 | 10:12 PM
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Originally Posted by Tom400CFI
At both comments!! That was awesome!

Nah...she didn't know. I honestly think that you could have sat there all day long at WOT, 5200 RPM and nothing would have happened. I could be wrong. It wasn't that, that did the car in...it was my younger brother, who sent the car over an embankment, down a steep grassy hill and into a tree that did the TA in.

Happy Mothers day, Mom?
I've got a brother like that !!
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