I have a question for the pontiac guys. I have just purchased a tripower pontiac intake. I don't know what model it is off of. I haven't been able to find a date code. This is the no that is on the intake .9762898. This may be a part no. Thanks in advance, jim
Re check that number I bet it is a 978, not 976, then look here http://www.pontiacpower.net/intake01.html Looks like its an 1966 389?
It is as you say. Thanks for the info, and link.Now that I know it's out of our date group will try ther pontiac forums.
Try Jon (CarbKing) on here, he is an expert on them and serves as technical advisor on the pontiac forums for the tripower setups.
Well technically... yes, BUT, many ponchos out there are likely gonna use this intake.... maybe most of them...
Hey, does that have the small middle carb?? Hmmm I think those are a bit rare for the late heads.... Hmmmm....
I did get the carbs, the end carbs are original with no choke ,or air mixture screws. The center carb is a ft inlet carb .i thought all of the carbs were side inlet. Going to the auto shop tomorrow for cleaning. Carbs are off. One piece of linkage is all I got with it. No vacuum diaphram. I think the date code is on the bottom of the intake.
Might be that it was swapped to mech secondaries. Look for an extended throttle shaft on the center carb on p*** side. It would stick out enough for the Eelco type bracket to clamp to. Having correct end carbs is the most important issue IMO
yea you need the correct end carbs. the small middle carb is 65 as mine was. Might be earlier also. Good luck
I have the correct end carbs with tags. The center carb does not have the extended shaft on the rt side. It does not have a fitting in the top, and it would be a large male fitting. It is possible the carb is correct, but I doubt it. I will have a friend take some pics tomorrow and will have to e mail them to some one to post if thats ok.
date code should be on top,you'll have to remove rear carb to see it,it should be under the front of the rear carb,I belive the middle carb is a front inlet,and the outer will be side, at least the 3 65 setups I've had have been that way.Also if it is a 66 unit it will have the one year only,big center carb. I've bought parts for mine from pontiactripower.com
66 ,I thought that was where I would find the code, but there is only the part no.I don't want to repair any thing, just clean it and p*** it on as soon as I find all the info I can. Pics tomorrow.
Is the front water crossover round? if so, it is 65 or 66. If all carbs same size- 66. If middle carb smaller 65. Those 2 years Pontiac did not use vacuum, they were machanical seconadaries. That may also explain why there is no shaft extension for the middle carb as you mentioned.
I'm going to have to correct you. All automatic transmission (both fullsize and GTO) cars came with vacuum operated secondaries that were controlled by a temperature sensor in mounted in the front of the intake manifold. This sensor would only allow the secondaries to open once the engine reached operating temperature. Due to complaints from customers (mainly GTO customers) many of these vacuum secondary setups were converted by the dealer to the mechanical setup. These vacuum setups are extremely rare to see today and the parts are very costly. And yes, I am aware that the top photo is early 60's and the second photo is '64 but they all used the vacuum setup until the end of the Tri-Power. Also I am trying to find a picture of the setup in my '65 GTO which was built with a 2 speed Tempestorque automatic and vacuum Tri-Power as well as a friend's '66 Bonneville with it's vacuum Tri-Power.
I had one from 64 with all the bells and whistles I bought at a garage sale told them it could not be worth much with the price of gas now days. Got it for 75 bucks and sold it for 1000. I guess i should fill bad for taking advantage of them? Got a realy nice anvil out of the deal also.
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