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Mack mid length on a 422?

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Old Jun 20, 2004 | 11:40 PM
  #1  
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Default Mack mid length on a 422?

I have been running a bolt on car with Macks and have had great results.
With spray I haul *** and the set up has worked well.

I am putting a 422 in soon and wonder if the macks will still flow ok?

I have been thinking about putting 1 7/8 longtubes on but that's allot of extra $$$.

Will the macks work or do I need to upgrade?
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Old Jun 20, 2004 | 11:51 PM
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Originally Posted by hoserack
I am putting a 422 in soon

I have been thinking about putting 1 7/8 longtubes on

You nailed it right on the head with that. You're gonna want to upgrade to the 1 7/8 primary lt's because of your larger displacement...I would run a 1 3/4 on a stock ci motor myself. Let that beast breath...don't choke the **** out of her.
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Old Jun 20, 2004 | 11:57 PM
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Yes, run the 7/8's... You'll pick up alot more low torque....
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Old Jun 21, 2004 | 02:18 AM
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Another vote for getting long tubes with 7/8"

Humor us and give us before and after dynos
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Old Jun 21, 2004 | 04:23 PM
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Originally Posted by Strahley
Another vote for getting long tubes with 7/8"

Humor us and give us before and after dynos
I'm going to post pics and dyno numbers, wait til you see this beast.
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Old Jun 21, 2004 | 04:43 PM
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Edelbrock makes some 1 7/8" stepped headers with merge collectors for less than $400.
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