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Buick Grand National Rearend Question For A 1986 El Camino
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mpayne
Administrator
| Posts: 632
| Joined: 10/07
Posted: 08/18/09
03:29 PM
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I got a post from one of my sister sites and thought you guys might be able to help answer his question. Here it is:
"Hello I just got an 8.5" rearend from a guy and it has 30 spindle, 3.42 gears Posi, disc breaks longer wheel studs. Anywhoo what I want to know what else do I need to do to make it stronger to handle 550 HP. This will be going into my 1986 El Camino."
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june-1
New User
| Posts: 26
| Joined: 07/09
Posted: 08/18/09
05:09 PM
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I have a friend that has 31 splind with a trans brake and he does 8.70 with a spool,I think you should be good,I also have few of my other buds that do 10.50 to 11.90 on stock axles.
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canted
Enthusiast
| Posts: 335
| Joined: 02/08
Posted: 08/18/09
05:33 PM
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There was a good article in CHP a while back about beefing up the 8.5 rear.
Jim
70 El Camino
461 solid, m20,
pics in readers rides
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Posted: 08/19/09
06:15 AM
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That grand national rear should hold up just fine to 550HP.
Horsepower sells Engines and torque wins races.
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Posted: 08/19/09
07:05 AM
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Agreed that rear end will hold up just fine.
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mpayne
Administrator
| Posts: 632
| Joined: 10/07
Posted: 08/19/09
08:29 AM
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Thanks for help, much appreciate.
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Posted: 08/19/09
05:17 PM
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No problem.
Horsepower sells Engines and torque wins races.
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