Team Chevelle banner
Cancel

speedo gear adapter--up or down

4543 Views 11 Replies 6 Participants Last post by  vimlesh, 
V
my speedometer reads about 29% too slow right now. in order to avoid changing the speedo drive gear (the one on the trans output shaft), i'm thinking about a speedo gear adapter.

i've heard of a 1.35/1 adapter, but is that a cable speed-up or cable slow-down adapter?

are these still available? how much and where can i get such a thing?
Save
Like
Status
Not open for further replies.
1 - 2 of 12 Posts
Greg P
Rich-L79, the speedometer in my '66 with M-20 is reading low so I know I need to change the output gear. I've been told that finding output gears for the M-20 is difficult, but that they use the same output gears as the TH350 -- which are available. Can you confirm or deny?

Thanks,
Greg
Save
Like
Greg P
Rich-L79 and secndgn, thanks for the information -- the link to Fred Aldrich's site was very helpful. I think I can get my speedo error corrected now.

Greg
Save
Like
1 - 2 of 12 Posts
Status
Not open for further replies.
Team Chevelle
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Bench Racing Performance Engine Body Shop Chevelle Tech
Top