66Ib injectors - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 4 Old 02-28-2019, 06:35 PM Thread Starter
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66Ib injectors

Hi all, are 66 Ib injectors too big for a stock block, stock cam, gt-40 head/intake 306 w/ a 68mm @ 6 psi? I was worried the idle may be too rich. Tuning will be with Holley HP efi if that matters. Thanks!

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post #2 of 4 Old 02-28-2019, 07:24 PM
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Absolutely not. I wouldn’t recommend anything smaller than 60’s personally with anything under boost. You can tune everything with that Holley, so don’t worry

Saleen414 and wytwolf like this.

Stock block 306, V1 T-trim, AFM B-451 cam, TFS Twisted Wedge, Holley Systemax, A1000, Snow Meth, TKO 600, Team Z, Strange, MM, Lakewood and Moser helps me go forward fast.
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post #3 of 4 Old 03-03-2019, 04:46 AM Thread Starter
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Thanks for the reply. It just seemed back in the day people ran 42Ib injectors with a set up like this, but that was with SCT chips for the tune.
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post #4 of 4 Old 03-03-2019, 09:03 AM
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They also probably ran a FMU too. Don’t do that. Run a big enough injector and fuel pump.

Stock block 306, V1 T-trim, AFM B-451 cam, TFS Twisted Wedge, Holley Systemax, A1000, Snow Meth, TKO 600, Team Z, Strange, MM, Lakewood and Moser helps me go forward fast.
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