1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

holley 450 cfm on stock 12a

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Old 06-06-08, 09:48 PM
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holley 450 cfm on stock 12a

can anyone tell me if a holley 450 cfm is a good idea for a stock 12a with road race headers and will the stock fuel pump be enough?
Old 06-06-08, 10:39 PM
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of course but upgrade your fuel pump
Old 06-07-08, 08:21 AM
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You dont need to upgrade your fuel pump, but you should. Just remember a regulator when you do.
Old 06-07-08, 08:44 PM
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Originally Posted by Alak
You dont need to upgrade your fuel pump, but you should. Just remember a regulator when you do.
u'll need 6psi for the holley. just buy a 6psi pump and u wont need the extra cost of a regulator. it's what i use.
Old 06-07-08, 09:15 PM
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I bought my Holley Fuel Pump and it came with a complementry regulator.

We also ran a Supercharged 12A with a 570CFM Avenger on a stock fuel pump for about 10 years with no problems.
Old 06-08-08, 11:34 AM
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That must have been one tiny supercharger. Or the setup made less power than stock because the stock fuel pump is inadequate for even a stock carb but useable if you're not leaving it floored for very long.
Old 06-08-08, 02:54 PM
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It'll work, but get a Sterling instead.
Old 06-08-08, 09:32 PM
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Lots of people like the Carter fuel pumps . They're just kinda difficult to install in a 1st gen due to the shape. I found a spot for mine, but it is slightly tilted. Works fine though.

I'd say a Sterling will beat a Holley every time, simply for the tuneability, not to mention power, but I don't have a Sterling to play with at the moment. If however you have your heart set on a big aftermarket carb on a Racing Beat manifold, get an Edelbrock. From what I've seen of mine on the Camden, it is EFI-smooth and very pleasant to drive, even with an aluminum flywheel. Others who've used them NA really like them too. You don't often read as many positives about Holleys, whether supercharged or NA, but you do see a lot for the Sterling.
Old 06-08-08, 10:22 PM
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Thanks to everyone for the feedback including the parrot.
Old 06-08-08, 11:17 PM
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I concour on the edelbrock carbs. They are the cats *** for reliability and drivability. I ran one for awhile on an FC converted to carb. Worked better than the EFI.
Old 06-08-08, 11:17 PM
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600cfm user here.
Old 06-09-08, 12:24 PM
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Originally Posted by Jeezus
600cfm user here.
...Which is why you're slower than a Toyota Tercel.
Old 06-09-08, 12:30 PM
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I really really like the edelbrock 500 thunder series for any rotary, the 450 (465?) holley racing beat kit is also very good but tuning for the edlebrock holds better and is easier, and as for the sterling, I think this carb is a piece of
























art and would highly recommend it for any 12a application.
Old 06-09-08, 03:49 PM
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Originally Posted by Sterling
...Which is why you're slower than a Toyota Tercel.
Hey, Tercels can be fast too......... if you swap in a 12A with a Sterling
Old 06-09-08, 04:46 PM
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Originally Posted by Sterling
...Which is why you're slower than a Toyota Tercel.
Lets see, I have taken a late 80's 525, a new jeep, chrysler 300 V6... I am some Tercel!

http://www.youtube.com/watch?v=j1n_4MtdK-c&NR=1

Last edited by Jeezus; 06-09-08 at 05:13 PM.
Old 06-09-08, 04:57 PM
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Holley blue tap fuel pump and regulator and the 450 carb headers and your golden bro...You will be fine...Put the regulator between 6 and 7 pounds...
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