C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

94 LTI Torque Specs???

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Old Mar 24, 2005 | 08:17 PM
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omrossi's Avatar
omrossi
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Default 94 LTI Torque Specs???

Recently blew a head gasket and decided to port the heads & intake while they were off. Got them back from the shop topday & they look AWESOME...can't wait to drive her again...been 4 weeks now (did it all myself except fot he deck milling & valve grind). Anyway, I'm needing torque specs for the Heads and Intake manifold so I can get everything buttoned back up. Thanks for the help...
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Old Mar 24, 2005 | 09:39 PM
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St. Jude Donor '05
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Any pics of the porting?
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Old Mar 24, 2005 | 10:24 PM
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Intake manifold bolts, start at 71 inch lbs. in sequence and then in a second pass to 35 lb. ft. Book shows 12 bolts, sequence is #1 2 3 4 bolts side to side, these bolts are in middle of manifold. then do # 5 and 6, left side front bolts. #7 and 8 are right side front bolts. Do # 9 and 10, right rear. and finish at # 11 and 12, left rear. Took this info from Red Book, this is for vin P engine, RPO LT1, will look up heads info.
12 11 4 1 5 6 left or drivers side.

10 9 3 2 7 8 right or passenger side.
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Old Mar 24, 2005 | 10:26 PM
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From my '95 FSM:

Intake manifold
1st pass - 71 in-lbs
2nd pass - 35 ft-lbs

Cylinder heads - 65 ft-lbs


Probably the same but don't quote me.

Jay
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Old Mar 24, 2005 | 10:26 PM
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I'll put the pics together in a while...have more pressing issues at the moment (driving the vette!)
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Old Mar 24, 2005 | 10:41 PM
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Cylinder head bolts ,in sequence, and in three passes to 67 lb. ft.
Bolt tightening sequence 17 9 1 6 14 -side next to intake manifold. 13 5 2 10
16 12 8 4 3 7 11 15- side next to header. Took info from Red book, this is left head, drivers side, # 17 13 and 16 are front bolts
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