I'm thinking of purchasing a mexi-engine for this 71 sb w/ autostick. The car didn't have a engine when i got it, and the motor doesn't use a stock flywheel, It uses a thin metal type of flywheel that bolts to the torque converter.
My question is would the new engine need a different type of end seal or anything else for that matter that's not on a stock motor?
motor question for 71 autostick
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kafer-cup
- Posts: 808
- Joined: Thu Nov 21, 2002 12:01 am
motor question for 71 autostick
HI jcabaron,
You will need the autostick flexplate that bolts to the crankshaft and the autostick oil pump. The end seal is the same I believe. The torque converter is on the trans shaft and that will bolt up to the flexplate with four bolts (the bolts are hardend). Basically other than the oilpump(you will need to find out if you have a dish cam or flat cam to see what oilpump you need)and flexplate, the engines are the same.
Good luck, If you need any more answers you can e-mail me at [email protected] or ask here.
KAFER-CUP
You will need the autostick flexplate that bolts to the crankshaft and the autostick oil pump. The end seal is the same I believe. The torque converter is on the trans shaft and that will bolt up to the flexplate with four bolts (the bolts are hardend). Basically other than the oilpump(you will need to find out if you have a dish cam or flat cam to see what oilpump you need)and flexplate, the engines are the same.
Good luck, If you need any more answers you can e-mail me at [email protected] or ask here.
KAFER-CUP
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Marc
- Moderator
- Posts: 23741
- Joined: Thu May 23, 2002 12:01 am
motor question for 71 autostick
Check the clearance between the flexplate and the camplug carefully - the original autostick engines had the plug fitted backwards (convex side out) to ensure that if the flexplate ever did touch the plug it wouldn't cut through it and cause an oil leak. With the camplug installed "normally" some flexplate/case combinations had this problem (if not initially, by the time the engine was worn a bit and the endplay increased). Since the Mexi-motors are only intended for manual transmission applications I'd be concerned - never done it so I can't say for sure. You could gain ~.008" clearance by adding the metal gasket between crank & flexplate....
There are three oil pump choices - `68/`69 with 3-rivet "flat" cam and small oil passages, `70/~`71 (3-rivet, large passage), and ~`72-up with 4-rivet "dished" cam and large passages. You should check to see how well the oil passages line up with the case (latest DB&HVW shows this being done on a new aluminum case) `cuz you may need to do a little port-matching on the case and/or the pump.
There are three oil pump choices - `68/`69 with 3-rivet "flat" cam and small oil passages, `70/~`71 (3-rivet, large passage), and ~`72-up with 4-rivet "dished" cam and large passages. You should check to see how well the oil passages line up with the case (latest DB&HVW shows this being done on a new aluminum case) `cuz you may need to do a little port-matching on the case and/or the pump.