Big block Chevy 454 into 69 GTO , what headers?

Asked by TheTwistedwrench Feb 26, 2020 at 01:21 PM about the 1969 Pontiac GTO

Question type: Car Customization

I am installing a big block chevy 454 into a 69 gto. Can anyone tell me what headers will fit?

5 Answers

Chevelle headers will probably work. Why ruin a nice GTO by putting the wrong engine in it?

The engine is 700 hp plus 13:1 compression and needs full length headers for performance. The car already had been changed once to an ls and debate is not the question. The customer wants what he wants. So I appreciate any help with information.

With that amount of heat I would get a good quality ceramic coated set. 13/1? Are you building this engine for E85? Any good hot rod supplier can fix you up with the correct headers.

I disagree with Ed on headers. With the right tail pipes and mufflers you can have almost any level of HP. I would use 3" pipe. Using cast iron manifolds would lose you a lot of power at the top end.

I appreciate all of your help. I however am running a race motor , and yes manifolds will drop the overall power by 75 hp. But my question is not if i can have custom headers made. I know manifolds and shorties will fit and I know a chevelle is very similar . I am curious if anyone knows for sure and has an actual part number that would work for full length headers.

Your Answer:


Looking for a Used GTO in your area?

CarGurus has 265 nationwide GTO listings starting at $8,999.


Own this car?

Share your experience with others.

1969 Pontiac GTO

Review another car

CarGurus Experts

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

Know more, shop wisely


Related Models For Sale

Used Chevrolet Camaro
919 Great Deals out of 12,321 listings starting at $2,795
Used Chevrolet Corvette
776 Great Deals out of 9,997 listings starting at $5,500
Used Ford Mustang
1,321 Great Deals out of 21,812 listings starting at $1,800
Used Pontiac Firebird
19 Great Deals out of 503 listings starting at $4,000
Used Dodge Challenger
786 Great Deals out of 15,004 listings starting at $4,065
Used Dodge Charger
814 Great Deals out of 16,535 listings starting at $1,995
Used Chrysler 300
454 Great Deals out of 7,315 listings starting at $1,590
Used Pontiac Grand Prix
259 listings starting at $2,995

Used Cars for Sale

2006 Pontiac GTO For Sale
5 Great Deals out of 40 listings starting at $14,995
2005 Pontiac GTO For Sale
27 listings starting at $13,810
2004 Pontiac GTO For Sale
4 Great Deals out of 60 listings starting at $8,999

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. Content will be removed if CarGurus becomes aware that it violates our policies.