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Best engine for 1977

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Old Nov 11, 2013 | 03:25 PM
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Default Best engine for 1977

I've got a 1977 Vette. It currently has a 350 in it from 78 with auto transmission. What is the best engine and tranny to put in it to get the maximum HP without destroying my rear end. Thought 572 with 4L80-E but I was informed it would destroy the rear end. Wanting power and show don't care about gas mileage. Any Ideas?
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Old Nov 11, 2013 | 03:54 PM
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Spending all that a money on 572 and 4l80e, why not spend some more and beef up the rear end and be done? No compromises.

Otherwise, I'd suggest moving to a newer LS engine and 4l80 or 4l60 overdrive.
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Old Nov 11, 2013 | 03:58 PM
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If that 36 year old rear end hasn't been rebuilt, I'd say the best engine for it is the one in the car now.
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Old Nov 11, 2013 | 04:00 PM
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"Best" is always brought down to reality by a checking account or VISA limit - so a budget is always helpful.
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Old Nov 11, 2013 | 04:18 PM
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No budget really not planning on selling her. Just want to beef her up a little bit. What would it normally run to rebuild the rear end and how much would it change the look?
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Old Nov 11, 2013 | 04:34 PM
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If you maintain independent suspension, won't change the look at all. Research Tom's Differentials if going that route.

If you want to move to a solid rear axle, Autofab has a 4 link conversion kit for $1150 + time + axle.
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Old Nov 11, 2013 | 05:54 PM
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Ugh! I cringe at the thought of putting a straight axle in a 'vette! But, if that's what ya gotta do, then that's what ya do, right?

If money is no object, an LS swap is the way to go. The only downside would be that you won't be able to brag about what crappy gas mileage it gets.

Scott
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Old Nov 11, 2013 | 07:18 PM
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Originally Posted by scottyp99
If money is no object, an LS swap is the way to go. The only downside would be that you won't be able to brag about what crappy gas mileage it gets.

Scott
You mean you get gas mileage? ( I suppose I do too, but it's gallons per mile, not miles per gallon)
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Old Nov 11, 2013 | 07:59 PM
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consider a 427-454 sbc with a turbo 400.Toms differential is a good choice for beefing up the IRS rear .
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Old Nov 11, 2013 | 08:20 PM
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Originally Posted by TimAT
You mean you get gas mileage? ( I suppose I do too, but it's gallons per mile, not miles per gallon)
Yep, that's what I'm talkin' about, right there!

Scott
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Old Nov 11, 2013 | 10:07 PM
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Originally Posted by garygnu
consider a 427-454 sbc with a turbo 400.Toms differential is a good choice for beefing up the IRS rear .
I think that's about what I'm looking for thanks!
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Old Nov 12, 2013 | 06:15 AM
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427/454 with 700R4 uverhaul your rear end and be done
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