Old 03-23-2020, 12:28 PM
Johnny406's Avatar
Johnny406 Johnny406 is offline
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Join Date: Jan 2006
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Default 72 LeMans Core Support Mounts Rusted Out

I started working on the long overdue 72 LeMans project and pulled off the core support to try to repair where the core support bushings rotted out. If I sandwich weld both sides of the core support plates, would I need to trim the new bushings or use thinner washers to compensate for the new metal? It seems that finding a 72 core support is a difficult and pricey endeavor though 1970 ones (particularly Chevelle) are quite common and cheap.
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Johnny US Army Retired
1978 Trans Am 463 Pontiac, Icon pistons, Scat H-beam rods, KRE 74cc 292CFM D-port heads, Lunati cam, V-max lifters, Northwind Intake, 950 Dominator, Powerglide, Coan converter, 3.73 12 bolt
1981 Trans Am 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, TK II w/ Holley 770 Street Avenger, 3.42 geared 30 spline Eaton posi street car.
1980 Formula Firebird low $ 350 Pontiac Jr. Street race project.
1972 LeMans 350 Pontiac (now running)project
Old 03-23-2020, 02:16 PM
scott70's Avatar
scott70 scott70 is offline
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Join Date: May 2002
Location: maine
Posts: 1,675

if the rest is in good shape,,install a mount repair kit,,they sell them for that. My 70 was like that,,the rest was good so we made our own repairs with like 16 gauge i think. At that time I didnt know they offered a repair kit for that. We sandwiched mine. The heighth of the finished,mounted core support was fine.

72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.64 @ 87.3 mph on slippery street tires.Bad 2.25 60ft.Owned since 86'

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