Author Topic: What motor exactly did this carb come off? 17058253  (Read 763 times)

Maxthe222

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What motor exactly did this carb come off? 17058253
« on: April 19, 2022, 05:17:13 AM »
Hey gang,

I've had this carb sitting in the yard for a while, someone is buying a few of my Oldsmobile motors and asked if I had carb too. I had this one floating around, I'm pretty confident it was off one of those motors, but I'm not 100% sure. It's definitely an 800 CFM Rochester Quadrajet. The number on the side of the carb clearly appears to be 17058253, which sounds like a 1978 Firebird 403, but most 1978 Firebirds with a 403 were Californian cars, and they came with the Californian specific carb 17058553. Where else would this carb have been used? H/A? Wouldn't they have used 17058553 carbs too?





1987 T/A GTA L98
1979 T/A Y84 WS6
1979 F/A W72 WS6
1978 T/A L80 WS6
1978 Formula L80 W50
1971 Formula 400 4-Speed


Maxthe222

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Re: What motor exactly did this carb come off? 17058253
« Reply #2 on: April 19, 2022, 07:05:00 AM »
So 350 or 403?
1987 T/A GTA L98
1979 T/A Y84 WS6
1979 F/A W72 WS6
1978 T/A L80 WS6
1978 Formula L80 W50
1971 Formula 400 4-Speed

Wallington

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Re: What motor exactly did this carb come off? 17058253
« Reply #3 on: April 19, 2022, 07:24:15 AM »
As above, fairly standard across the Olds range, of course there was no '78 350 Olds in Firebirds. Looks like it came off a hotrodder, remove the choke plate for instant 50% HP.

Maryland Bandit

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Re: What motor exactly did this carb come off? 17058253
« Reply #4 on: April 21, 2022, 03:03:40 PM »
Carb was built on the 151st day in 1978. 403 carb. Choke plates an easy fix. I might have enough spare parts if you need it.

Re: What motor exactly did this carb come off? 17058253
« Reply #4 on: April 21, 2022, 03:03:40 PM »

 

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