well guys if i needed another project haha so i picked up a 79 monza spyder wow not many left it seems but i am looking for some interior parts mostly a passenger side door panel or 2 and the cheap ass mouldings windshield posts and behind the back seat under the windows also i need to lower the gears in this car it has 2.29 ratio and has a 7.5 ring gear anyone have any intel in that it would be appreciated not much out there anymore.....thx
LandShark68_2+2 said
Mar 1, 2020
I don't have any parts for you, but I had a friend who bought one of those brand new and let me borrow it often.
305(?) v8 and 4 speed manual. It really flew. I buried the needle more than a few times.
Enjoy, Scott (LandShark )
CdnGMfan said
Mar 1, 2020
The 7.5" rear was developed originally for the Vega. The Monzas and all Vegas 1975+ used a torque tube assembly with the drive shaft. As for the guts (ring & pinion) they made 2.29, 2.56, 2.73, 2.93, 3.08 & 3.23 ratio sets if I remember correctly. They also offered a 3.42 in earlier years before CAFE nixed it. The 7.5 center was even occasionally used on some full-size Chevrolets with 267s or sometimes 305s. Also the G-body cars it was common (Malibu, Regal etc).
What kind of engine / trans does your Monza have? With 2.29s I would guess a 305 automatic. In 1975 only, in California only, you could get a 350-powered Monza as the 262 V8 didn't pass California smog certification. I wonder which rear they used?
It has been a while since I have seen a once-common Monza on the road.
timbuk said
Mar 1, 2020
yes this car is factory 305 auto car however it was converted to 4 sp had a 262 4 sp 75 thanks for that rear end info and yes rare these days
73SC said
Mar 1, 2020
Often think about my little beast, my first car actually. I kept it stock looking on the outside. I suspect the rear end had some tall gears in it like the 2.29's
since it could run dead even with my cousins' 79 L48 Corvette on the highway, of course the 79 Vette routinely makes the 10 worst Corvettes made list.
JUST A BUMP THE MONZAS ARE ULTRA RARE IF U GUYS SEE A PARTS CAR SOMEWHERE....I need to relearn how to post pics havent been on it for a while....thx guys
dcneric said
Mar 13, 2020
My daughters ex-boyfriend had a Monza for a short time and if I recall correctly the S-10 used the 7.5. As I had thought it would be a lot more convenient to go to 5 lug wheels and I had found a post on some monza lovers site. The axles were supposedly interchangeable and I would guess the rear gears as well.
timbuk said
Mar 14, 2020
yup learnin up on the s10 stuff for sure have had friends google this car cause they dont remember been workin it
well guys if i needed another project haha so i picked up a 79 monza spyder wow not many left it seems but i am looking for some interior parts mostly a passenger side door panel or 2 and the cheap ass mouldings windshield posts and behind the back seat under the windows also i need to lower the gears in this car it has 2.29 ratio and has a 7.5 ring gear anyone have any intel in that it would be appreciated not much out there anymore.....thx
I don't have any parts for you, but I had a friend who bought one of those brand new and let me borrow it often.
305(?) v8 and 4 speed manual. It really flew. I buried the needle more than a few times.
Enjoy, Scott (LandShark )
The 7.5" rear was developed originally for the Vega. The Monzas and all Vegas 1975+ used a torque tube assembly with the drive shaft. As for the guts (ring & pinion) they made 2.29, 2.56, 2.73, 2.93, 3.08 & 3.23 ratio sets if I remember correctly. They also offered a 3.42 in earlier years before CAFE nixed it. The 7.5 center was even occasionally used on some full-size Chevrolets with 267s or sometimes 305s. Also the G-body cars it was common (Malibu, Regal etc).
What kind of engine / trans does your Monza have? With 2.29s I would guess a 305 automatic. In 1975 only, in California only, you could get a 350-powered Monza as the 262 V8 didn't pass California smog certification. I wonder which rear they used?
It has been a while since I have seen a once-common Monza on the road.
Often think about my little beast, my first car actually. I kept it stock looking on the outside. I suspect the rear end had some tall gears in it like the 2.29's
since it could run dead even with my cousins' 79 L48 Corvette on the highway, of course the 79 Vette routinely makes the 10 worst Corvettes made list.