$34 Harbor Freight tmp gauge shot the exhaust temps on my 198 idleing at 450 rpm. and the temps on the 74 Dart slant.

Exhaust was 385* to 405 with the open headers.

The exhaust on the Dart was 365-395* it sounded like it was idling too high.

I have modded my fuel line on the 198.

temp was 98*

Fuel temp on the Dart with the stock fuel line was 189*!!!

Mid to upper 70's ambient temp didn't drive either one anywhere.

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

I bought one of those guns a few years back before everyone had one. I used to take it to the track and just check stuff under the hood of the red car. Got accused of cheating a lot because no one knew what it was.

They are fun to play with.

I used it once to prove to a buddy that his '67 Valiant had the wrong sender in it for his temp gauge. He wouldn't believe me and had the radiator, water pump, and head gasket replaced.

Car still ran hot on the gauge.

He parted out the car.

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Official Cookie and Mater Tormentor.