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Post Info TOPIC: T56 behind BBC


- Ben #2 -

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T56 behind BBC
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I have a 454 that I'd like to start building up soon to put in my 68. When I do, I'd like to convert to a manual trans. I want something I can drive a lot so was considering 5 and 6 speeds. Came across a decent priced and low mile T56 from a 94 firebird. This would be (I believe) the lt1 version. I've heard some say this is better and also heard the opposite. just wondering opinions. I likely wouldn't have the motor built and be ready to swap all this over for a couple years, so just curious if I should jump on it and let it sit or wait until I'm ready and then buy one. i can probably get it for $700 or so and it's in a wrecked car so I can take what I want with it pretty much. 



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68 Malibu 307/PG. For now.....



- Mike -
Puyallup, WA


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How many miles are on it?  From what I know, you wouldn't have to have anything special with that era of T56.  At that price point it would be more feasible to do upgrades to it if you wanted.



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'67 Chevelle -- 383ci, Jerico DR4, S60 3.54

'70 Camaro -- In the works TT 6.0L, 4L80E, 12 bolt ??? ratio



- Ben #2 -

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I think he said around 90k miles. 



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68 Malibu 307/PG. For now.....



- Mike -
Puyallup, WA


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Seems reasonable then.

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'67 Chevelle -- 383ci, Jerico DR4, S60 3.54

'70 Camaro -- In the works TT 6.0L, 4L80E, 12 bolt ??? ratio



- Ben #2 -

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I'm in bend through Friday, so I'll have to make sure he didn't get rid of everything before I get back. 

Side note: is the 6 speed worth it? Is there a 5 speed that'll hold up well to a 468 ish build? Or highway speeds be damned and find a muncie or st 10? I'd like to be able to drive on the feeeway 10 miles to work and also over Stevens pass a couple times a year when it's all done. Without screaming the whole way. Looking for really fun reliability in the end. 



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68 Malibu 307/PG. For now.....



- wondah whooooaman-
Colorado Springs


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If you want to drive the car on at freeway speeds and distance, you'll want the OD and yes the 5 and 6 speeds are worth it.  Your choice of rear end gears will make a huge difference too.  I took my chevelle almost 900 miles with an M21 and 331 gears and it wasn't bad.  I put a TKO 600 in it and it was very fun to drive both around town and at distances.  If you ever are going to race the car regularly, then look at a race transmission like a Gf5 or the like as you will be putting sliders in a Tremec type transmission constantly. 



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Mark
69 Chevelle SS
"Carpe Jugulum"
"Only those who have never learned self-restraint fear reasonable discipline" T.R. Fehrenbach

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http://www.chevelles.com/showroom/data/500/breakout.JPG


- Ben #2 -

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Thanks for the input. I don't think I'll ever race it on a track or have more than street tires; if I did it'd just be for fun passes. 

 



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68 Malibu 307/PG. For now.....


- Beemer Brett - Redmond, WA

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5 gears are plenty unless you plan on going 80+ in my opinion. Usually you can't lug a carb'd big block too much anyway so a single overdrive works out pretty well. I am a fan of the tko. Have, or have had 3 of them now. I prefer the 3.73 or 3.90 gears. 4.10 isnt bad either on my chevelle but think it's a hair short.

that being said, t56 is a great trans also, but more suited for ls engines or higher speeds.  If the price is good though I wouldnt hesitate to buy, you get an extra gear for free! 



-- Edited by Brettd85 on Monday 14th of August 2017 08:52:14 AM

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1966 Chevelle, 1972 K20, 1967 GTO, 1955 210 Coupe, 1969 Chevelle




- Erik -
Snohomish, WA


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Brett...have you been on Dude Tour?!  



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Erik
'69 Chevelle Sport Coupe, EFI355, TH350
'68 Chevrolet C10 Stepside Project, 292, t-56, C4 IRS (project)
'77 Chevrolet K20 Silverado LWB, 400CI, TH400
'91 Chevrolet V3500, TBI Gen V 454, 4L80E, Lifted


- Beemer Brett - Redmond, WA

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That's true you guys haul balls

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1966 Chevelle, 1972 K20, 1967 GTO, 1955 210 Coupe, 1969 Chevelle

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