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#1
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1965 tripower
Hi everyone. Couldn't find an answer to this, so I'm asking here. Will a '65 tripower fit a '66 and later engine??? If so, how much later?? Is there much difference, if any, between the '65 and '66 tripowers?? Thank you, Carmine.
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#2
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Yes, My 65 Tripower setup is ALL correct for 65. My block is a 66 389.
Dave |
#3
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Quote:
Also go to Mike's tripower to get tons of info. Also Dick Boneske on this site is also a wealth of info. |
#4
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I have '65 carbs and intake sitting on '68 #16 heads, which sit on a '70 400 block.
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#5
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It will fit all the way up to the EGR years.
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#6
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The '65 Tripower will fit all Pontiac engines from 1965 through 1979 except for the 301/265 versions.
The later cylinder heads, however, sometime in the '70's, have a larger passage for the heat riser passage. There are gaskets available to cover the hole and makes the '65/'66 Tripower swap a breeze.
__________________
BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
#7
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Yes, it well fit to '79 but I saw no need to get into the BS details. I had one on one of my '77 GP SJ's way back when. However, there was more to it than just gaskets. I did not mention the 301 because.... well.... who considers a 301 a Pontiac engine? Not me.
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#8
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OK guys. My question was answered about fit. Isn't the top center carb, on the '65 tripower, smaller then the one on the '66?? Does this affect anything or even matter?? Would the cfm be the same of both?? Thank you, Carmine.
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#9
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Not just the top, the whole carb, therefore CFM is different along with everything else.
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#10
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Chief,you have never built a HiPo 301 block.Tom
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#11
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OK. Last question. I promise. Is there anything wrong with putting a tripower center carb. from a '66 onto a '65 intake?? Thank you, Carmine.
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#12
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Although the 1966 center carb has a larger throttle-bore, 1-11/16", compared to '64 and '65 carbs with a 1-7/16' throttle-bore, the venturi size is smaller on '66.
Center carbs of 1964 and 1965 Tri-powers have 1-1/4" venturi, whereas the 1966 center carb has a 1-3/16" venturi. I think this means the '66 will flow less CFM. Someone can chime in and correct me if I am wrong on any of the above. Edit - For more info, read #8 here: http://www.pontiactripower.com/faq
__________________
1965 Pontiac GTO 455/469 w/ #48 Heads, '65 Tri-Power 9.25:1 CR Stump Puller Cam Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00 3.55 Rear Differential Front: 225/60R15 Height: 25.6" Rear: 275/60R15 Height: 28" Last edited by wbnapier; 03-22-2019 at 07:22 PM. |
#13
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Quote:
I just tried that link. "Page not found". |
#14
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Carmine, the link worked for me.
"Bill"! |
#15
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I will build one of those when I am ready to build an HT4100, Northstar or odd-fire V6. There is more but I am sure you get my point.
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#16
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Perhaps someone can post up a bare '65 and a bare '66 intake. You can clearly see the difference. Had I had read this earlier I would have snapped some but now it will have to wait until this time tomorrow.
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#17
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I really dont get your point except because you have not built one you dont know what one is capable of,that all.Tom
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#18
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Quote:
That is why any Pontiac guy around here doesn't consider a 301 when talking Pontiac engine history. I liken it to a bastard child with its Papier-mâché crank. |
#19
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Tom's 301 stroker build:https://forums.maxperformanceinc.com...d.php?t=710524
Tri-Power intake ID thread we've all seen before, you're not going to find much better pictures to see the difference between the two most popular ones ('65 & '66):https://forums.maxperformanceinc.com...d.php?t=786314
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#20
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Well, I'm sure when someone says you can't or shouldn't, someone will. I was the same way when I started racing GM overdrives 20+ years ago. I still do not consider a 301 a Pontiac and would trust an Olds diesel first.
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