max speed
Thread Starter
Instructor
Joined: Jul 2005
Posts: 101
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From: Astrakhan city no
You meen ,that Transgo plate doesn't have this hole ? I can find this hole in my originall separator plate ?
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
YES.
That "MTV" hole required for all C4 700R4 Corvette Only transmissions is missing.
Needs to be added for correct 3-4 Automatic WOT upshifts & hold in 4th as long as you want it at will.
No, It is not punched out in the 700R4 TransGo universal separator plate.
.1875"/ 3/16" drill bit will solve all issues you have right now.
I have been following & reading all posts on this thread.
Logic told me after last night you were using a TRANS GO 700R4 steel separator plate too like me.
Brian
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
The Factory GM Corvette Service Manual shows all Valvebody worm hole oil flow & Steel valvebody separator plate oil holes stamped out.
Has to be a Corvette FSM for a 1992 model year to identify & locate "MTV" hole missing.
Laying your factory installed valve body separator steel plate on top of TRANS GO 700 R4 separator plate will help too.
Brian
Has to be a Corvette FSM for a 1992 model year to identify & locate "MTV" hole missing.
Laying your factory installed valve body separator steel plate on top of TRANS GO 700 R4 separator plate will help too.
Brian
Pro
Joined: Dec 2009
Posts: 502
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Not with an auto, heck my 93 w/headers and a cam would barely do 155, course it had 150k miles on it at the time, but I had 2.56 gears.
I would think you should be in the 140 mph range, but I can't say for sure, as you did not mention your HP.
Also, just because it is a 383, does not make it a beast. Tuning, how well your heads and intake flow, all play a part in how well it will perform and whether you have a lowend, mid range or topend designed cam.
I would think you should be in the 140 mph range, but I can't say for sure, as you did not mention your HP.
Also, just because it is a 383, does not make it a beast. Tuning, how well your heads and intake flow, all play a part in how well it will perform and whether you have a lowend, mid range or topend designed cam.
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
Not with an auto, heck my 93 w/headers and a cam would barely do 155, course it had 150k miles on it at the time, but I had 2.56 gears.
I would think you should be in the 140 mph range, but I can't say for sure, as you did not mention your HP.
Also, just because it is a 383, does not make it a beast. Tuning, how well your heads and intake flow, all play a part in how well it will perform and whether you have a lowend, mid range or topend designed cam.
I would think you should be in the 140 mph range, but I can't say for sure, as you did not mention your HP.
Also, just because it is a 383, does not make it a beast. Tuning, how well your heads and intake flow, all play a part in how well it will perform and whether you have a lowend, mid range or topend designed cam.
My late friend had a 1985 Z51 A4.
Iron headed as from factory.
His mods done............we seen 170+mph several times together.
My 87 vert still has all factory cats.
Runs 150 easily top end.
taching around 3,600 RPM's only.
BR
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
I checked my notes on my 87 Vert 700R4 rebuild last year.
Its not labeled as MTV.............
DETENT.
Hole #26, square punched hole.
Add hole with a .1875"/ 3/16" drill bit & debur surrounding edges from drilling.
Figure # 44 Typical Spacer Plate, page # 700R4-40 in my 1987 Corvette FSM.
Check your 1992 Factory Corvette Service Manual also.
Its not labeled as MTV.............
DETENT.
Hole #26, square punched hole.
Add hole with a .1875"/ 3/16" drill bit & debur surrounding edges from drilling.
Figure # 44 Typical Spacer Plate, page # 700R4-40 in my 1987 Corvette FSM.
Check your 1992 Factory Corvette Service Manual also.
Thread Starter
Instructor
Joined: Jul 2005
Posts: 101
Likes: 0
From: Astrakhan city no
I checked my notes on my 87 Vert 700R4 rebuild last year.
Its not labeled as MTV.............
DETENT.
Hole #26, square punched hole.
Add hole with a .1875"/ 3/16" drill bit & debur surrounding edges from drilling.
Figure # 44 Typical Spacer Plate, page # 700R4-40 in my 1987 Corvette FSM.
Check your 1992 Factory Corvette Service Manual also.
Its not labeled as MTV.............
DETENT.
Hole #26, square punched hole.
Add hole with a .1875"/ 3/16" drill bit & debur surrounding edges from drilling.
Figure # 44 Typical Spacer Plate, page # 700R4-40 in my 1987 Corvette FSM.
Check your 1992 Factory Corvette Service Manual also.
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