T5 Speedo Drive Gear Question
#1
T5 Speedo Drive Gear Question
New Guy Here... I've been lurking for months learning what I can about Camaro transmissions and have found a lot of useful information. Odd thing is, I don't have a Camaro.
I've got a 78 MGB convertible and am swapping out the anemic 4 cyl with the SFI 3.4 V6 out of a 95 Camaro and the T5 out of an 85 V6 Camaro (tag 13-52-071).
I'd like to use my existing mechanical speedometer and have it be reasonably accurate. The drive gear on my output shaft is a blue (7 tooth?) gear and I have no drive gear at present. I've been looking around for the part and it looks like I can get the drive gear and connection from several locations (thegearbox.org being one). I figure a 22 tooth gear would be pretty close for what I need with a 3.909 rear end and 195/74/14 tires (~24" diameter).
Without dropping the tranny and pulling the tailshaft, how do I know if I have a 1.84" OD drive gear or a 1.76" OD drive gear?
That would determine which 22T driven gear I order.
22 tooth grey dimension -1.75 x .305 x .810
18-22T .810 diameter gears must be used with a 1.84 OD speedo drive gear.
22 tooth green dimension -1.75 x .305 x .870
22-25T .870 diameter gears must be used with a 1.76 OD speedo drive gear.
Any ideas?
Thanks,
Doug
I've got a 78 MGB convertible and am swapping out the anemic 4 cyl with the SFI 3.4 V6 out of a 95 Camaro and the T5 out of an 85 V6 Camaro (tag 13-52-071).
I'd like to use my existing mechanical speedometer and have it be reasonably accurate. The drive gear on my output shaft is a blue (7 tooth?) gear and I have no drive gear at present. I've been looking around for the part and it looks like I can get the drive gear and connection from several locations (thegearbox.org being one). I figure a 22 tooth gear would be pretty close for what I need with a 3.909 rear end and 195/74/14 tires (~24" diameter).
Without dropping the tranny and pulling the tailshaft, how do I know if I have a 1.84" OD drive gear or a 1.76" OD drive gear?
That would determine which 22T driven gear I order.
22 tooth grey dimension -1.75 x .305 x .810
18-22T .810 diameter gears must be used with a 1.84 OD speedo drive gear.
22 tooth green dimension -1.75 x .305 x .870
22-25T .870 diameter gears must be used with a 1.76 OD speedo drive gear.
Any ideas?
Thanks,
Doug
#4
Re: T5 Speedo Drive Gear Question
I got my speedometer drive and gear in the mail the other day. The retainer bolt they sent me was a 1/4-20 bolt which doesn't fit in my T5. Pretty sure I need metric.
Anybody know what diameter and thread pitch the speedometer drive retainer bolt is? I'll pick one up on the way home from work.
Thanks a bunch.
Doug
Anybody know what diameter and thread pitch the speedometer drive retainer bolt is? I'll pick one up on the way home from work.
Thanks a bunch.
Doug
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beachrodder
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08-07-2015 04:27 PM