Flywheel Difference for 69 - 350 vs 427
Thread Starter
Melting Slicks
Joined: May 2005
Posts: 2,486
Likes: 71
From: Elkhart Lake, Wisconsin
Flywheel Difference for 69 - 350 vs 427
Does anyone know if there is a difference between the flywheels used on the 350/350 and the 427/390 in 69" They both use the 11" clutch. I have 2 flywheels that came on a 350's and need one for my 427. I have not tried to fit one up yet.
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
No difference. Both used the larger 168 tooth 14" flywheel and the same 621 bellhousing.
Here's a bit of trivia; for some reason, the 427 ZL-1 engine received the smaller flywheel, 153 tooth, and the 403 bellhousing. Though the smaller set up would rpm quicker it wouldn't have the holding power of the larger clutch.
FWIW.
Here's a bit of trivia; for some reason, the 427 ZL-1 engine received the smaller flywheel, 153 tooth, and the 403 bellhousing. Though the smaller set up would rpm quicker it wouldn't have the holding power of the larger clutch.
FWIW.
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
Even though the ZL1, L88 and LT1 small block used the small flywheel and 10.5 inch clutch disk, the "L88" pressure plate had about 3000 lb of pressure. I drove a '65 Vert in a parade last summer with one of these pressure plates and my left leg's still shaking!
In spite of the smaller diameter, it does have the holding power!
In spite of the smaller diameter, it does have the holding power!
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
Ahh,..that makes sense,..a locker pressure plate. Didn't the ZL-1 and L-88 get the factory double-disk set up? I'm no expert.
Also, thought the LT-1 got the 14" fly. They did in a 70-72 (LT-1) Z-28 Camaros.
Also, thought the LT-1 got the 14" fly. They did in a 70-72 (LT-1) Z-28 Camaros.
