8.8 Grade bolts

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04-18-2013, 11:36 AM

lakeport

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Car: 1988 GTA Trans AM

Engine: 305 TPI

Transmission: 5 speed

8.8 Grade bolts

Will 8.8 grade bolts suffice for the TPI runners to the plenum and to the intake?

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04-18-2013, 12:09 PM

Tuned Performance

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Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: 8.8 Grade bolts

The 8.8 has a tensile strength of 116,000 psi (pound per square inch). The grade 10.9 is used where high strength is required. The 10.9 grade bolt is rated at 175,000 psi.
You can use the 8.8

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04-18-2013, 01:55 PM

red rock

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Car: 1987 iroc

Engine: 383 TPIS intake, Dyno Don headers

Transmission: 700R4 w/Pro-built Auto/transgo 2-3

Axle/Gears: 3.27/3.70 borg warner 9 bolt

Re: 8.8 Grade bolts

I'd say, you could bolt the runners to a truck and use it in truck pulls.

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