Hey guys... the quick and dirty here is that that the Fitech 39610 EFI system does NOT fit a Holley 2300 series bolt pattern! Per their website, the Fitech EFI 39610 Tri Power / Six Pack was designed to fit "MOST" 6 - Pack manifolds (not sure what that means).... Both Chevy and Mopar use Holley 2300 bolt patterns for nearly all of their 3 x 2 intakes... Not sure about Fords (anyone know?)
Currently, the 39610s are being shipped with .323" - ".350 bolt holes and when you try to install them on a Holley 2300 intake / carb flange, it will not install. You will need to drill the bolt holes out in the EFI base plates to approximately .406" and THEN it will drop down on to the carb flange.
Early units shipped with .406" holes! So it is possible some of you with early units got your EFI Trips to bolt right on to Holley bolt patterns..... Someone probably questioned, why do you have such a large hole for a 5/16" stud.... this is why!
We have been dealing with these units and issues since 2019 when we developed our EFI adapter plates that allow you to run the Fitech EFI on a stock Pontiac Tri Power intake.
There are also differences in the air cleaner base shapes as well!!! While they look VERY similar, they are NOT the same! The EFI air filter base plates WILL NOT fit a Holley 2300 carb. The 2300 carb base plates will fit on the Fitech EFI as they are a lot bigger - fitment will be sloppy but it "can" work.
Please note, that if you want to get the Holley 2300s to bolt to our EFI adapter kit, you will need to drill out your bolt holes from approximately .350" to .406" to get it to drop on.
If your looking for aftermarket Holley 2300 Tri Power parts for Pontiacs or EFI conversions for Pontiacs, stop on over at our website here: www.tinindianp...
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