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TPI manifold bolts... which go where?

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Old 04-04-2001, 06:29 PM
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MrJ
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TPI manifold bolts... which go where?

Some of them are longer than the others... which bolts go in which holes? I already know for certain that the 4 middle bolt holes are for the shorter bolts... but I have a couple of the longer bolts and I'm not sure where they go. any ideas?

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91 Trans Am WS6
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Old 04-05-2001, 01:36 AM
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Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
The manifold-to-head bolts, or the runner-to-plenum bolts, or the runner-to-intake bolts?

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Old 04-05-2001, 02:05 AM
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should have been more clear... the base to head bolts.
Old 04-05-2001, 12:40 PM
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I think you mean the runner to plenum bolts. I took mine off in order but I have it together now and I don't remember which is which.

------------------
'88 IROC TPI 355, '69 truck 4-bolt, fully balanced, 9.75:1 compression, fully ported '70 truck heads(for now), Harland Sharp 1.6 Roller Rockers, Comp Cams CS 252AH-12, ported '86 TPI converted to speed density, Crane AFPR, Flowmaster 3in. exhaust, Edelbrock TES headers, all emissions equipment is still intact, plan on burning my own chips, many more mods and parts on the way as time and money permits =(
Best E.T. with TBI 305: 16.11 @ 82mph
Haven't been to track with new motor
If you have any questions on converting from TBI to TPI email me at jdkchevy70@yahoo.com
In memory of Dale Earnhardt, I'll miss cheering for that black #3 on raceday!!!
Old 04-05-2001, 01:47 PM
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Car: 1990 Pontiac Trans Am
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Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
<font face="Verdana, Arial" size="2">Originally posted by MrJ:
should have been more clear... the base to head bolts.</font>
They should all be the same size..??
Old 04-05-2001, 02:03 PM
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Mine weren't!?!?! WTF
Old 04-05-2001, 02:05 PM
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OOPS!! BIG OOPS!!! I meant my runner to intake bolts, not my runner to plenum bolts!! haha my bad!!
Old 04-05-2001, 02:42 PM
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MrJ
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why are you telling me what you think I mean? I know what I mean. I mean the bolts that hold the intake manifold to the heads. Several of them are slightly longer than the others.
Old 04-05-2001, 03:22 PM
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Because mine are ARP and they were all the same length. The only ones I know of that vary are the runner to intake bolts so that's what I thought you were talking about.

------------------
'88 IROC TPI 355, '69 truck 4-bolt, fully balanced, 9.75:1 compression, fully ported '70 truck heads(for now), Harland Sharp 1.6 Roller Rockers, Comp Cams CS 252AH-12, ported '86 TPI converted to speed density, Crane AFPR, Flowmaster 3in. exhaust, Edelbrock TES headers, all emissions equipment is still intact, plan on burning my own chips, many more mods and parts on the way as time and money permits =(
Best E.T. with TBI 305: 16.11 @ 82mph
Haven't been to track with new motor
If you have any questions on converting from TBI to TPI email me at jdkchevy70@yahoo.com
In memory of Dale Earnhardt, I'll miss cheering for that black #3 on raceday!!!
Old 04-05-2001, 05:58 PM
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MrJ
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Ok I figured it out. 4 of the bolts are longer... they are the ones that go in each corner of the manifold.
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