Will a 65 gto 398 tripower fit on a 64 389?

Asked by Mar 12, 2013 at 08:33 PM about the 1965 Pontiac GTO

Question type: Car Customization

I have a 64 gto engine 389 and have a chance to buy a 65 gto 389 tripower. Will it fit? It looks like the heater hoses are hooked up different. thanks

5 Answers

102,815

I would give it a shot. Check with the people over at www.highperformancepontiac.com to see if there were any engine changes between the two years.

105

Please do your home work on this! there are differences in porting with some engines; the restoration guide will be your best friend and the advise given above is also excellent.

The 65 tri-power will not fit the 64 engine without changing the heads to 65 and up. The bolt pattern is different.

4,885

Exactly right, intake bolt pattern changed in '65, so you will need 65 and up heads. There's a ton of them out there. If this is going to be a street car, get the 6x, they have the larger valves, moderate compression ratio for today's crap gas, and better porting. Put some stainless valves and bronze guides and you'll have a reliable setup. Check the head comparisons at Wallace Racing. Butler Performance is also a good source.

What hoses should I put on my 65 gto with tri- power. Chrome..Brass,braided?

Your Answer

GTO

Looking for a Used GTO in your area?

CarGurus has 457 nationwide GTO listings starting at $4,995.

ZIP:

Pontiac GTO Experts

  • #1
    Rucko
    Reputation
    780
  • #2
    Norm Davis
    Reputation
    350
  • #3
    F_O_R
    Reputation
    200
View All

Related Models For Sale

Used Ford Mustang
598 Great Deals out of 39,738 listings starting at $1,988
Used Chevrolet Corvette
174 Great Deals out of 17,468 listings starting at $3,000
Used Dodge Charger
443 Great Deals out of 33,929 listings starting at $1,999
Used Chrysler 300
317 Great Deals out of 19,547 listings starting at $900
Used Pontiac Grand Prix
13 Great Deals out of 2,661 listings starting at $1,750

Used Cars For Sale

2006 Pontiac GTO For Sale
113 listings starting at $8,995
2005 Pontiac GTO For Sale
76 listings starting at $7,999
2004 Pontiac GTO For Sale
128 listings starting at $4,995

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.