How much HP will a Chrysler manual 3 speed trans take before it breaks???? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 02-06-2006, 09:41 PM
onebadmerc's Avatar
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How much HP will a Chrysler manual 3 speed trans take before it breaks????

I have a new project and need some information from the Mopar gurus. I bought a 73 Dart on Ebay that has a slant six and a 3 speed manual trans on the floor. My plan is to sell my 72 Dart and take the money off of it and invest it into a 360 for the 73 Dart. The 360 isn't going to be too radical, flat top pistons, Edelebrock RPM Intake, headers and a cam, etc..... So will a Chrysler 3 speed manual trans hold up to a fairly healthy 300-320HP engine. I have also located a 8 1/4" rearend out of a 73 Skamp that will also go into this 73 Dart. So is this trans going to hold up or will it scatter itself all over the road.
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Old 02-09-2006, 11:18 AM
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Quote:
Originally Posted by onebadmerc
I have a new project and need some information from the Mopar gurus. I bought a 73 Dart on Ebay that has a slant six and a 3 speed manual trans on the floor. My plan is to sell my 72 Dart and take the money off of it and invest it into a 360 for the 73 Dart. The 360 isn't going to be too radical, flat top pistons, Edelebrock RPM Intake, headers and a cam, etc..... So will a Chrysler 3 speed manual trans hold up to a fairly healthy 300-320HP engine. I have also located a 8 1/4" rearend out of a 73 Skamp that will also go into this 73 Dart. So is this trans going to hold up or will it scatter itself all over the road.

I would think it would depend on the ability of the car to hook-up , If it spins the tires it probably would last , If it don't spin then the weak links will break.
I never did use the 3 speed , My old Hemi car (67 Belvedere) had the 4-speed.
But I am sure there will be some Chrysler people that will put a light on it for you>
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Old 02-09-2006, 12:53 PM
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Well this is showing my age now LOL. Back in the late 70's my brother had a 70 Challenger that had a 340 in it with a 3 speed. I used to scare him to death in that car as it had a tendency to turn around in the road in second gear at close to 5500 powershifts. He went through about four clutches in that car in a year and a half that he owned it, one I put in and paid for because he didn't have the money to do it. Trans held up fine along with the factory shifter. The 340 had a Racer Brown cam, Carter Thermoquad, and Hooker headers with if memory serves me correct a 3.23 gear. You should be find with the three speed but I would recommend trying to find a four speed later on as it would definitely be stronger.
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Old 02-09-2006, 01:35 PM
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best info i can get you is to go to www.bigblockdart.com and look up Jim Lusk. He is very smart about the chrysler tech issues. Tell him AA-alingshot sent ya!

please dont get upset about the other websight.
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Old 02-09-2006, 01:46 PM
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340

" Well this is showing my age now LOL. Back in the late 70's my brother had a 70 Challenger that had a 340 in it with a 3 speed. I used to scare him to death in that car as it had a tendency to turn around in the road in second gear at close to 5500 powershifts. He went through about four clutches in that car in a year and a half that he owned it, one I put in and paid for because he didn't have the money to do it. Trans held up fine along with the factory shifter. The 340 had a Racer Brown cam, Carter Thermoquad, and Hooker headers with if memory serves me correct a 3.23 gear. You should be find with the three speed but I would recommend trying to find a four speed later on as it would definitely be stronger."

hearing that reminded me of when my dad would tell me about his duster. It had a 340 with a 3 speed and a thermaquad. in fact it had a 1250 thermaquad from a boat. He said it would run 11's witha 4.11 and slicks. He cant find any pictures of it now because my mom threw them away because they had his girlfriend at the time posing with it.
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