I am swapping a 455 block into a 72 GTO that had a 400 in it. Are the 400 mounts on the frame different from the 455 mounts?

Asked by Jun 14, 2012 at 08:50 PM about the 1972 Pontiac GTO

Question type: Car Customization

The engine is a 474 cubic inch built to 575HP. the headers are almost touching the frame and a frame mounts.

3 Answers

1,045

400 mounts r the same to 455, pontiac never changed the mounts for the different engine options that generation ...however i hope ur looking into getting some stonger mounts, 575hp is in territory for new rear end, tranny?

yes they are the same , you have an automatic tranny ? headers are a real pain with the 4 speed & i had to relocate the oil filter & some interferance issues with the Z bar with hooker headers.

1 of 1 people found this helpful.
3,005

if the motor mounts are old you will lose some clearance, now mounts will help

Your Answer

GTO

Looking for a Used GTO in your area?

CarGurus has 475 nationwide GTO listings starting at $5,995.

ZIP:

Pontiac GTO Experts

  • #1
    Rucko
    Reputation
    780
  • #2
    Norm Davis
    Reputation
    340
  • #3
    F_O_R
    Reputation
    200
View All

Related Models For Sale

Used Chevrolet Camaro
418 Great Deals out of 30,790 listings starting at $3,550
Used Ford Mustang
730 Great Deals out of 38,316 listings starting at $895
Used Chevrolet Corvette
294 Great Deals out of 20,725 listings starting at $2,990
Used Dodge Challenger
307 Great Deals out of 22,276 listings starting at $6,999
Used Pontiac Firebird
12 Great Deals out of 778 listings starting at $2,500
Used Dodge Charger
440 Great Deals out of 27,829 listings starting at $1,979
Used Pontiac Grand Prix
29 Great Deals out of 2,739 listings starting at $1,500
Used Chevrolet Impala
513 Great Deals out of 33,923 listings starting at $950

Used Cars For Sale

2006 Pontiac GTO For Sale
3 Great Deals out of 124 listings starting at $9,997
2005 Pontiac GTO For Sale
74 listings starting at $9,000
2004 Pontiac GTO For Sale
6 Great Deals out of 126 listings starting at $5,995

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.