57 Olds engine swap

citcapp · November 24th, 2007, 12:09 PM

I have a 455 ci engine bored 30 over with 10.1 comp. I am going to install it in my 57 olds super 88. I plan on using a TH400 Mondello tranny with this engine. I don't think the two piece driveline will be strong enough for this combo. Should I change to a single piece drive line. Has anyone done this? whats involved?

Thanks

59-59-59 · November 30th, 2007, 01:26 AM

I've done the same thing - only difference is I put a 425 Olds with a long tailshaft TH 400.. The only 'major' thing I had to do with the driveshaft is getting one made the correct lenght and notching only about 3/8 out of the X member frame to clear the U - joint.

Oldsguy · November 30th, 2007, 06:38 AM

If you observe work trucks, you'll see they use two piece drive shafts, doesn't mean your drive shaft is also strong but just wanted to observe that being a two piece in itself wouldn't mean it was weak or wouldn't handle more torque.

citcapp · December 11th, 2007, 11:30 AM

Quote:

Originally Posted by 59-59-59

I've done the same thing - only difference is I put a 425 Olds with a long tailshaft TH 400.. The only 'major' thing I had to do with the driveshaft is getting one made the correct lenght and notching only about 3/8 out of the X member frame to clear the U - joint.

Thanks for the information I am moving ahead with the project full speed

November 24th, 2007, 12:09 PM	#1 (permalink)
citcapp Super Moderator Join Date: Nov 2007 Location: Bothell, WA Posts: 3,445	57 Olds engine swap I have a 455 ci engine bored 30 over with 10.1 comp. I am going to install it in my 57 olds super 88. I plan on using a TH400 Mondello tranny with this engine. I don't think the two piece driveline will be strong enough for this combo. Should I change to a single piece drive line. Has anyone done this? whats involved? Thanks

November 30th, 2007, 06:38 AM	#3 (permalink)
Oldsguy Hot Rodder at heart Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 5,360	If you observe work trucks, you'll see they use two piece drive shafts, doesn't mean your drive shaft is also strong but just wanted to observe that being a two piece in itself wouldn't mean it was weak or wouldn't handle more torque. __________________ Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB.

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November 30th, 2007, 01:26 AM	#2 (permalink)
59-59-59 Registered User Join Date: Sep 2006 Posts: 308	I've done the same thing - only difference is I put a 425 Olds with a long tailshaft TH 400.. The only 'major' thing I had to do with the driveshaft is getting one made the correct lenght and notching only about 3/8 out of the X member frame to clear the U - joint.