Rear end ratio
Laughing Gas
Joined: Jun 2013
Posts: 1,026
Likes: 23
I'm talking about a zf five speed manual. Not a newer automatic. Which I assumed would be assumed when referring to my 92 and 95 pick ups.
my 92 with a zf five speed manual could do over 120mph no problem it was so high geared with the 3.55's. Fifth gear was practically useless unless you got a head of steam up and heading for 80mph plus. That's why I was surprised that a 302 with a c6 would be revving 3k at 65mph with 3.55's.
my 92 with a zf five speed manual could do over 120mph no problem it was so high geared with the 3.55's. Fifth gear was practically useless unless you got a head of steam up and heading for 80mph plus. That's why I was surprised that a 302 with a c6 would be revving 3k at 65mph with 3.55's.
Laughing Gas
Joined: Jun 2013
Posts: 1,026
Likes: 23
Curiosity killed this cat. A quick google shows a c6 at 1:1 and a zf5 final drive at .77:1. Quite a difference.
with 265/75/16 tires shows 103mph in fifth for my old zf5 with 3:55's
and 89mph with 4.10's both at 3000rpm
a c6 at 1:1 final drive shows 80mph with 3.55 and 69mph with 4.10's. Again at 3000rpm.
with 265/75/16 tires shows 103mph in fifth for my old zf5 with 3:55's
and 89mph with 4.10's both at 3000rpm
a c6 at 1:1 final drive shows 80mph with 3.55 and 69mph with 4.10's. Again at 3000rpm.
Cargo Master
Joined: Mar 2010
Posts: 3,326
Likes: 292
From: Laramie, WY
I'm talking about a zf five speed manual. Not a newer automatic. Which I assumed would be assumed when referring to my 92 and 95 pick ups.
my 92 with a zf five speed manual could do over 120mph no problem it was so high geared with the 3.55's. Fifth gear was practically useless unless you got a head of steam up and heading for 80mph plus. That's why I was surprised that a 302 with a c6 would be revving 3k at 65mph with 3.55's.
my 92 with a zf five speed manual could do over 120mph no problem it was so high geared with the 3.55's. Fifth gear was practically useless unless you got a head of steam up and heading for 80mph plus. That's why I was surprised that a 302 with a c6 would be revving 3k at 65mph with 3.55's.
Curiosity killed this cat. A quick google shows a c6 at 1:1 and a zf5 final drive at .77:1. Quite a difference.
with 265/75/16 tires shows 103mph in fifth for my old zf5 with 3:55's
and 89mph with 4.10's both at 3000rpm
a c6 at 1:1 final drive shows 80mph with 3.55 and 69mph with 4.10's. Again at 3000rpm.
with 265/75/16 tires shows 103mph in fifth for my old zf5 with 3:55's
and 89mph with 4.10's both at 3000rpm
a c6 at 1:1 final drive shows 80mph with 3.55 and 69mph with 4.10's. Again at 3000rpm.
Two trucks, same tire size, same rear gears, one has a ZF5 in 4th gear (or E4OD auto in 3rd with converter locked, either way is 1:1 with no slippage) and the other has a C6 in 3rd (again, 1:1), the C6 equipped truck will still spin more RPM. It's as if the "clutch" is constantly slipping with these old school non-lockup trans like the C6.
They seem to last well, just not built for running highway at today's speeds is all.
agree with you.
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