1978 'vette--4 speed CAST IRON --rare??
#1
1978 'vette--4 speed CAST IRON --rare??
Hello..My name is Josh and I have a 1978 Corvette. When I had my engine rebuilt a while back, the 'vette mechanic mentioned to me that the transmission in my car is made out of cast iron. I got up under the car and checked it out and sure enough it is cast iron.
He also said that it being cast iron is a rare thing for the 1978 Corvettes. Something about there being a shortage of aluminum that year thus the usage of the cast iron for my 4 speed.
I am wondering if anyone here can tell me if that is in fact a rare transmission...or if all the 4 speeds in '78 were in fact cast iron.
Thanks,
Josh
He also said that it being cast iron is a rare thing for the 1978 Corvettes. Something about there being a shortage of aluminum that year thus the usage of the cast iron for my 4 speed.
I am wondering if anyone here can tell me if that is in fact a rare transmission...or if all the 4 speeds in '78 were in fact cast iron.
Thanks,
Josh
#5
RE: 1978 'vette--4 speed CAST IRON --rare??
if i am right in 78 gm put in 4 speed cast iron[ saginoff tranny ],not shure of the spelling, the m 21 and 22 are white metal, [aluminun] THE ROCK CRUSHER,I WOULD SAY THE MUNCY IS THE BETTER OF THE 4 TRANNYS THE CAST IRON IS GOOD BUT A GRAPY GEAR RATIOS.GM MAKES A T-10 ALUMINUM TRANY TO AND A LOT OF PEPOLE GET THEM MIXED UP FROM THE M 21 & 22 ... HOPR THIS HELPS, I HAVE REBUILT ALL 4 OF THOSE TRANNYS. SO IF YOU HAVE ANT QUESTIONS LET ME NO
#6
RE: 1978 'vette--4 speed CAST IRON --rare??
ORIGINAL: corvette king
if i am right in 78 gm put in 4 speed cast iron[ saginoff tranny ],not shure of the spelling, the m 21 and 22 are white metal, [aluminun] THE ROCK CRUSHER,I WOULD SAY THE MUNCY IS THE BETTER OF THE 4 TRANNYS THE CAST IRON IS GOOD BUT A GRAPY GEAR RATIOS.GM MAKES A T-10 ALUMINUM TRANY TO AND A LOT OF PEPOLE GET THEM MIXED UP FROM THE M 21 & 22 ... HOPR THIS HELPS, I HAVE REBUILT ALL 4 OF THOSE TRANNYS. SO IF YOU HAVE ANT QUESTIONS LET ME NO
if i am right in 78 gm put in 4 speed cast iron[ saginoff tranny ],not shure of the spelling, the m 21 and 22 are white metal, [aluminun] THE ROCK CRUSHER,I WOULD SAY THE MUNCY IS THE BETTER OF THE 4 TRANNYS THE CAST IRON IS GOOD BUT A GRAPY GEAR RATIOS.GM MAKES A T-10 ALUMINUM TRANY TO AND A LOT OF PEPOLE GET THEM MIXED UP FROM THE M 21 & 22 ... HOPR THIS HELPS, I HAVE REBUILT ALL 4 OF THOSE TRANNYS. SO IF YOU HAVE ANT QUESTIONS LET ME NO
OK, thanks for the info. The bad gear ratio must be why the car feels like it has a 4:50 gear in the rear end. LOL
Is there anyway to find out how many vettes were made with the cast iron tranny in 1978?
#7
RE: 1978 'vette--4 speed CAST IRON --rare??
let me do some reserch for you and i will get back to you i will also find out what kind of ratios it has,if you could give me the numbers off the case e-mail to me wallacex2000@yahoo.com
#8
RE: 1978 'vette--4 speed CAST IRON --rare??
ORIGINAL: corvette king
let me do some reserch for you and i will get back to you i will also find out what kind of ratios it has,if you could give me the numbers off the case e-mail to me wallacex2000@yahoo.com
let me do some reserch for you and i will get back to you i will also find out what kind of ratios it has,if you could give me the numbers off the case e-mail to me wallacex2000@yahoo.com
OK, thanks. I have this number that was on the drivers side of the trans case. The numbers stamped were larger than your average codes...22127.....is that the number, or is it on the passenger side?
#9
RE: 1978 'vette--4 speed CAST IRON --rare??
ORIGINAL: forango
OK, thanks. I have this number that was on the drivers side of the trans case. The numbers stamped were larger than your average codes...22127.....is that the number, or is it on the passenger side?
ORIGINAL: corvette king
let me do some reserch for you and i will get back to you i will also find out what kind of ratios it has,if you could give me the numbers off the case e-mail to me wallacex2000@yahoo.com
let me do some reserch for you and i will get back to you i will also find out what kind of ratios it has,if you could give me the numbers off the case e-mail to me wallacex2000@yahoo.com
OK, thanks. I have this number that was on the drivers side of the trans case. The numbers stamped were larger than your average codes...22127.....is that the number, or is it on the passenger side?
I believe these numbers were also stamped on the trans casing but smaller...GM6261888
#10
RE: 1978 'vette--4 speed CAST IRON --rare??
Hello,
I have a '79 Corvette Coupe with a 4-speed. The engine rpm is at 3500 at 70 mph. Is there a better transmission w/overdrive that woulkd bolt in?
I'm thinking a Richmond 6-speed or would changing the rear end gear ratio do the trick?
Thanks,
Steve
I have a '79 Corvette Coupe with a 4-speed. The engine rpm is at 3500 at 70 mph. Is there a better transmission w/overdrive that woulkd bolt in?
I'm thinking a Richmond 6-speed or would changing the rear end gear ratio do the trick?
Thanks,
Steve