68 camaro 3 speed auto to manual conversion - Camaro Forums - Chevy Camaro Enthusiast Forum

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Old 03-20-2017, 01:30 AM
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Default 68 camaro 3 speed auto to manual conversion

Hey guys, need some help deciding on what swap I should consider into my 68 camaro.
454 BB, 4.10. Not looking to spend a fortune.
located in Ontario. What do you fellas recommend

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Old Today, 06:21 AM
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I would got a Muncie 4 speed if you want to convert it to a stick,Thats what came with those cars from the factory.You can go the wrecking yards,Swap Meets and or the aftermarket.Or a combination of all three for parts.Easy swap.
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Old Today, 11:37 AM
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What kind of budget are you talking and what torque numbers is the Big block putting down? The are not any economically friendly gearboxes out there that can handle more then 400 ft/lbs of torque. 400 ft/lbs is a pretty weak 454. With most Standard transmission the case itself is the weak point and they can not be made to be much stronger then stock.

GM used the Muncie M22 behind their big blocks but they are far from economical. These are the correct transmission for anyone building a SS clone so there are 3 buyers for every transmission out there. Even the M22 is only good to 500 ft/lbs.

There are some aftermarket option but they are not going to be cheap The tremec TKO-500/600 can range in price for $2000 to $2500. Keep in mind that is just the transmission you will still need the clutch and all the other parts.

The most common standards you see at swap meets are the T-5's and older saginaw's. Neither of those can hold up to a mid strength small block.

Last edited by Gorn; Today at 11:45 AM.
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Old Today, 12:02 PM
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A whole lot easier to do a small block 383 stroker.
A big block swap requires a few things you won't have like a big block heater core which you'll probably have to pull the right fender to install.
I did this many years back on a '69 327-427 swap.
The BB right cylinder head blocks the hose connections on a SB core.
Your alternator and other accessory mounting is all different, you'll need a big block radiator and hoses, big block manifolds or headers etc. etc.
Also BB Camaros have heavier front springs on the suspension to carry the extra weight. Either way if your car has a stock 10 bolt rear and mono leaf springs you'll need to upgrade to multi leafs and at least a 12 bolt GM if not something better if you're going to do any hard launches at all.
Another thing you should consider is a steel scatter-shield bell housing and a bigger clutch/flywheel set up. I split a stock aluminum bell housing in half with my 427. If you are going big power you'll want some kind of traction bars at the very least to avoid wheel hop and subframe connectors are a good idea too, a strong big block can twist the body enough to cause damage if you get good traction on a hard launch.
Lots to consider and it gets expensive, even more so if you don't do it right the first time.
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