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Old 03-26-2017, 06:35 PM
aaronkl84corvett aaronkl84corvett is offline
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Default gears and converter for an L78 cammed big block

what do you all recoomend for minimum converter and gears for a
BBC with the L78 cam, oval ports, iron intake, tuned qjet, manifolds.

i'm not having a ton of "smile" with 3.31s and 2400 converter in a Monte!

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Old 03-27-2017, 07:50 PM
L78steve L78steve is offline
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454?
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Old 03-27-2017, 08:39 PM
earntaz earntaz is offline
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A Monte is pretty heavy -- even with a 454 makin' goobs of torque. Back in the day we ran a 3:91 and they pulled real well ... TAZ
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Old 03-27-2017, 08:55 PM
aaronkl84corvett aaronkl84corvett is offline
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yes 454
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Old 03-28-2017, 02:05 PM
MailOrderMotion MailOrderMotion is offline
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I know this is splitting hairs, but in a 454 that is an LS6 cam.
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Old 03-28-2017, 02:53 PM
luzl78 luzl78 is online now
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Quote:
Originally Posted by 2MQ View Post
I know this is splitting hairs, but in a 454 that is an LS6 cam.
same cam
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Old 03-30-2017, 03:33 AM
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3.31s should pull pretty strong with a decent converter in an A-body. 3.73s will feel snappier but you'll hate them on the freeway.
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Old 04-19-2017, 03:40 PM
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Quote:
Originally Posted by scuncio View Post
3.31s should pull pretty strong with a decent converter in an A-body. 3.73s will feel snappier but you'll hate them on the freeway.
Couldn't agree more. I have 3.31s in my BB 69. Very nice happy medium for the street and highway. I do have an M21 though.
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Old 04-19-2017, 11:49 PM
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Listen to green LS6!

The corvette passenger side manifold is worth something, or the boys would not have brought it up when I showed up at the race with it on. The drivers side is better, but the passenger could not be any worse
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Old 04-01-2017, 07:50 PM
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Call ATI converter and tell the tech what your combination is for best converter performance. They are good knowledgeable people. Yes the L78/ LS6 cams are the same. I say go with a 4.10 gear for the street. I use one in my street SB Nova, nice gear.
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