71 LT1 engine info
Thread Starter
Drifting
Joined: Nov 2002
Posts: 1,951
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From: Shore NJ
71 LT1 engine info
Ok 71 LT1 owners, can you give me some info on the 350/330 hp. I'm looking for the rotating assembly specs: piston type/manufacturer, bore, stroke, crank...GM numbers if you had them would be great....Also GM offered a replacement engine with those specs but I cant find any info....Thanks for any help you can forward... 
Emerging Vendor
Joined: Mar 1999
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From: San Diego CA
71 LT1 pistons are forged TRW with single valve relief, shotpeened con rods, forged steel crank 4 bolt main block. Solid lifter cam, hi pressure oil pump, 202/160 valve heads with screw-in studs/guidepates, hi rise aluminum intake and 780 holley carb.
Greg
Greg
Thread Starter
Drifting
Joined: Nov 2002
Posts: 1,951
Likes: 1
From: Shore NJ
Originally Posted by corvgreg
71 LT1 pistons are forged TRW with single valve relief, shotpeened con rods, forged steel crank 4 bolt main block. Solid lifter cam, hi pressure oil pump, 202/160 valve heads with screw-in studs/guidepates, hi rise aluminum intake and 780 holley carb.
Greg
Greg
Thread Starter
Drifting
Joined: Nov 2002
Posts: 1,951
Likes: 1
From: Shore NJ
Originally Posted by corvgreg
The factory rated the 70 at 11 to 1 compression and the 71 and 72 at9 to 1 compression. You can still get the correct single relief flat top piston.
Greg
Greg
