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Old 06-13-2025, 09:50 PM   #22
SoCalCoupe
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Join Date: Sep 2021
Location: Point Loma, San Diego, CA
Posts: 556
Default Re: Tri-power issues

Quote:
Originally Posted by KULTULZ View Post
I have no idea of how you are driving the car on the street now with available pump gas.

11.4 to 1 CR and a very aggressive timing curve (all mechanical with no vacuum for the street).

If you want a true street driver, maybe consider building a mild 390/428 for the street and use the 3X2 with carb or TBI if you want the wow factor. Store the 406.

Who makes the other 3X2 TBI setup?

My driving style is smooth cruising and optimizing fuel economy. It actually drives OK, even with California gas, except for the hot start. I'm used to keeping the RPMs up and not bogging down a cammed up engine. I love the sound and the thought that I CAN put my foot into it.


Yes, mechanical distributor, no vacuum. There's not even a vacuum port on the whole tripower setup except for the PCV valve (it was on some but not all setups.)


That's a thought, mild/stock 390, store the 406. Actually, that's an economical solution. I could probably replace the the whole engine for less than the cost of the tripower EFI. Another option is to keep the 406 engine and just get a new 4 bbl intake and a high quality carb. However, I couldn't resist buying the authentic G-code 406 tri-power. I'm really into it. Just spent big bucks getting a set of authentic 15x5.5 cat-eye Hi-Po wheels too.


The other tri-power EFI I was looking at was Autotrend EFI in Diamond Springs CA.
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