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1991 Fleetwood G-Tech Times


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Hey All,

I borrowed my Buddy's G-tech yesterday and tested our 91 Fleetwood FWD and the results were pretty pitiful indeed :( . It was however kinda windy out. Is it normal for the car to lose 60 horsepower through the drivetrain? These 4.9 litre V8 are suppose to churn out 200 horsepower. BTW I got smoked by my buddy in his V-6 Grand Am.

Best Horsepower: 127

Best 0-60: 9.8 sec

Best 1/4 mile: 17.8 sec @ 79.9 miles/hour

I'm just wondering if anyone else put up times this slow...Thanks.

Spence

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In 1963 my folks 1956 Sedan Deville would run almost exactly the same times at Central Mi Dragway.

I had a trophy from there that I had to leave in the attic of the garage so my folks wouldnt find it and know I raced their car.

Come to think of it I'd better check my attic to see what my kids have up there. Or maby not....

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Hey hey, plugs and wires are fairly recent, the car does seem to have a bit of a studder or hesitation. Would checking and cleaning the EGR tubes on the throttle body help this out and maybe performance numbers too? Thanks for any help.

Spence

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Cleaning the EGR tunes would probably eliminate the hesitation - especially if they have not been cleaned in 108,000 miles.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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I would regularly get around 163 hp at the wheels in my 92 STS with the 4.9L. So I'd say you are down on power a bit.

Bruce

2023 Cadillac CT4-V Blackwing

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