TPI Intake bolt torque pattern?
Thread Starter
Supreme Member
Joined: Aug 2003
Posts: 1,644
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
TPI Intake bolt torque pattern?
just need the torque down pattern for the tpi intake..thanks
Joined: Sep 2004
Posts: 5,906
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: TPI Intake bolt torque pattern?
For the base or runners?
For the base, nearly all patterns start at the center most bolt, and then move outward, alternating sides. This makes for the most evenly distributed clamping force.
For the base, nearly all patterns start at the center most bolt, and then move outward, alternating sides. This makes for the most evenly distributed clamping force.
Thread Starter
Supreme Member
Joined: Aug 2003
Posts: 1,644
Likes: 4
From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Re: TPI Intake bolt torque pattern?
yes for the base. I was thinking the same pattern u stated. My chiltons manual was showing the passenger side then moving to the drives side which seemed strange
Joined: Sep 2004
Posts: 5,906
Likes: 240
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: TPI Intake bolt torque pattern?
Its not sensitive enough to really matter which side you start on. As long as you evenly torque the bolts in a alternating sequence you'll be fine.
Much like torqing lug nuts in a star pattern. its so the wheel seats correctly.
Much like torqing lug nuts in a star pattern. its so the wheel seats correctly.
Thread Starter
Supreme Member
Joined: Aug 2003
Posts: 1,644
Likes: 4
From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Re: TPI Intake bolt torque pattern?
8. 7. 9. 10. 11. 12.
front engine TPI Intake
2. 1. 3. 4. 5. 6.
I guess I'll go with the way it says to torque the TPI Intake but the TBI way looks better and i'll only be torqueing to 18lbs. because its going to aluminum heads not iron
5. 6. 4. 1. 7. 8.
front engine TBI Intake
9. 10. 3. 2. 11. 12.
front engine TPI Intake
2. 1. 3. 4. 5. 6.
I guess I'll go with the way it says to torque the TPI Intake but the TBI way looks better and i'll only be torqueing to 18lbs. because its going to aluminum heads not iron
5. 6. 4. 1. 7. 8.
front engine TBI Intake
9. 10. 3. 2. 11. 12.
Last edited by TPI-Formula350-; Jan 16, 2008 at 05:32 PM.
Re: TPI Intake bolt torque pattern?
i wouldn't do the one side, then other side way. I've always done the center, and worked my way out in a circular motion and haven't had a problem.
oh, And on my LT1 (alum. heads) they still called for 30 ft/lbs. tq spec
oh, And on my LT1 (alum. heads) they still called for 30 ft/lbs. tq spec
Thread Starter
Supreme Member
Joined: Aug 2003
Posts: 1,644
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
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