Did the factory ever install a 12 bolt rear end in a 65 GTO?

Asked by Aug 17, 2012 at 02:01 AM about the 1965 Pontiac GTO Coupe

Question type: General

Every pic I've seen have all been 10 bolts!  When these cars first hit the showrooms they were advertised
with lots of power... and a 10 bolt rear end just seems like a weak link!  If they did NOT install 12 bolts,
will a Chevelle be a direct swap?

3 Answers

no they had optional gear ratios but they were all 10 bolt. according to some rear end builders i spoke to , a 12 bolt on a goat is over kill if you're not racing it . the 10 bolt on the 65 gto is plenty powerful for the street. i have one on my 65 lemans. to fit a chevelle rear you might have to relocate the spring perches. it might also be a little wider you'll have to measure it . and shorten the driveshaft. what engine do you have in it ?

1 of 1 people found this helpful.

the 10 bolt rear in the gto is not the same 10 bolt rear on the lemans or tempest. with beefed up gears, the casing is totally different and much stronger. the gto rear came with 3:55, 3:90 and i think it was 4:10 or 4:11 not sure which one.



1 of 1 people found this helpful.

Your Answer


Looking for a Used GTO in your area?

CarGurus has 372 nationwide GTO listings starting at $3,950.


Pontiac GTO Experts

  • #1
  • #2
    Norm Davis
  • #3
View All

Related Models For Sale

Used Ford Mustang
278 Great Deals out of 38,263 listings starting at $1,995
Used Chevrolet Corvette
93 Great Deals out of 15,649 listings starting at $4,500
Used Dodge Charger
240 Great Deals out of 32,992 listings starting at $495
Used Chevrolet Impala
363 Great Deals out of 27,127 listings starting at $1,000
Used Chrysler 300
305 Great Deals out of 18,997 listings starting at $1,999
Used Pontiac Grand Prix
1,889 listings starting at $3,000

Used Cars For Sale

2006 Pontiac GTO Coupe For Sale
90 listings starting at $9,595
2005 Pontiac GTO Coupe For Sale
52 listings starting at $7,949
2004 Pontiac GTO Coupe For Sale
97 listings starting at $3,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.