71 LT1 engine info
01-19-2006, 02:01 PM
#1
Drifting
Thread Starter
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... 
01-19-2006, 04:08 PM
#2
Emerging Vendor
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
01-19-2006, 09:14 PM
#3
Drifting
Thread Starter
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
01-19-2006, 10:29 PM
#4
Safety Car
Originally Posted by 73jst4fun
Thanks Greg for that info, compression was between 9-10 for that engine?
01-20-2006, 01:57 AM
#5
Emerging Vendor
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
01-20-2006, 04:37 PM
#6
Drifting
Thread Starter
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
