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
81,365

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
3,795

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 393 nationwide GTO listings starting at $7,995.

ZIP:

Search Pontiac GTO Questions

Pontiac GTO Experts

#1 Rucko
Rucko
Reputation 760
#2 Norm Davis
Norm Davis
Reputation 300
#3 FordNut
FordNut
Reputation 210
View All

Related Models For Sale

Used Ford Mustang"
305 Great Deals out of 42,689 listings starting at $1,999
Used Chevrolet Corvette"
154 Great Deals out of 16,847 listings starting at $2,995
Used Dodge Charger"
309 Great Deals out of 28,735 listings starting at $2,950
Used Pontiac Grand Prix"
56 Great Deals out of 4,067 listings starting at $1,475
Used Chevrolet Impala"
465 Great Deals out of 30,020 listings starting at $1,236

Used Cars For Sale

2006 Pontiac GTO For Sale
85 listings starting at $11,500
2005 Pontiac GTO For Sale
3 Great Deals out of 64 listings starting at $7,999
2004 Pontiac GTO For Sale
3 Great Deals out of 112 listings starting at $7,995