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

Goathungry
0

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

4 Answers

tenspeed
85,955

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.

SweetRide66
85

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.

GTOinNH
0

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

Norm Davis
4,085

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.

Your Answer

Add photo

Related Questions

GTO

Looking for a Used GTO in your area?

CarGurus has 488 nationwide GTO listings starting at $6,988.

ZIP:

Search Pontiac GTO Questions

Pontiac GTO Experts

#1 Rucko
Rucko
Reputation 760
#2 Norm Davis
Norm Davis
Reputation 320
#3 FordNut
FordNut
Reputation 210
View All

Related Models For Sale

Used Ford Mustang"
709 Great Deals out of 41,819 listings starting at $1,500
Used Chevrolet Corvette"
343 Great Deals out of 19,199 listings starting at $2,995
Used Dodge Charger"
560 Great Deals out of 31,769 listings starting at $1,500
Used Pontiac Grand Prix"
38 Great Deals out of 4,287 listings starting at $1,390
Used Chevrolet Impala"
901 Great Deals out of 31,735 listings starting at $1,200
Used Chrysler 300"
513 Great Deals out of 22,283 listings starting at $2,000

Used Cars For Sale

2006 Pontiac GTO For Sale
3 Great Deals out of 116 listings starting at $9,500
2005 Pontiac GTO For Sale
3 Great Deals out of 80 listings starting at $9,000
2004 Pontiac GTO For Sale
5 Great Deals out of 140 listings starting at $6,988