Spark plugs?

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Dec 27, 2014 | 05:52 PM

signguy62

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From: NJ

Spark plugs?

If I don't run the $7 a piece, 100k A/C Delco Iridiums. What's the next plug of choice for a 99-02 4.8l?

Dec 27, 2014 | 08:45 PM

Mangled03gmc

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From: In a van DOWN BY THE RIVER

tr5 or tr55

Dec 28, 2014 | 01:57 AM

qwkvert

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^^^ yup.

Dec 28, 2014 | 05:43 PM

signguy62

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From: NJ

Thanks!
The TR55's come gaped at .060.
They should be re-gaped to .040 I assume?

Dec 28, 2014 | 10:11 PM

qwkvert

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Quote:

Originally Posted by signguy62

Thanks!
The TR55's come gaped at .060.
They should be re-gaped to .040 I assume?

I gaped mine to .045. ...

Dec 29, 2014 | 07:28 AM

dirt track racer 81

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From: Hennessey, Oklahoma

They won't last near as long.

Feb 12, 2015 | 12:05 AM

stoffer

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Quote:

Originally Posted by dirt track racer 81

They won't last near as long.

how long is "normal" when running 87-89 octane???

Spark plugs?

Spark plugs?

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