GM vs Holley TBs

For discussing injector selection,manifold modifications, throttle bodies, fuel supply system design and construction, and FIdle valves and IACs.
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fury fan
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Posts: 96
Joined: Tue Dec 11, 2007 10:28 am
Location: Indianapolis

GM vs Holley TBs

Post by fury fan »

Anyone know if GM injector pods can be installed in Holley TBs? There are a bunch of Holley TBs out there on Ebay (2” throttle bores) but to get a 2” bore in a GM TB requires a not-too-common 454 TB.

Holleys also have Holley-specific parts and injectors.

So could a guy take a Holley TB and install GM parts and get the best of both words? From the pics I’ve seen it looks like a reasonable proposition.
Needs to get the toes out of the water and just jump off the diving board!!!
current EFI project:
65 Chrysler 300L, 413, working on inline dual GM TBI units, will run with MS2. Hoping to have factory-style appearance.
fury fan
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Posts: 96
Joined: Tue Dec 11, 2007 10:28 am
Location: Indianapolis

Re: GM vs Holley TBs

Post by fury fan »

Thanks for the reply.

I'm wanting to swap the whole injector/regulator/fuel fitting assembly into a Holley, not just the injectors themselves. The GM type is super-cheap and super-common, probably more reliable than teh Holley stuff.
DSC01130-1000.jpg
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Needs to get the toes out of the water and just jump off the diving board!!!
current EFI project:
65 Chrysler 300L, 413, working on inline dual GM TBI units, will run with MS2. Hoping to have factory-style appearance.
Matt Cramer
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Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: GM vs Holley TBs

Post by Matt Cramer »

Lance wrote:ff,

The GM TBI injectors won't work in the Holley TBI, though Chrysler TBI injectors *might*. See this: http://www.megamanual.com/v22manual/minj.htm#size

Lance.
I wouldn't be surprised if the Chrysler injectors are a direct drop in. Holley built the Chrysler TBIs and the Pro-Jection looks like they had retooled them into an aftermarket unit.
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