Holley spreadbore 0-9895 advice
Thread Starter
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Joined: Jul 2019
Posts: 61
Likes: 5
Holley spreadbore 0-9895 advice
Hi there.
I am in the UK and specialist carb tuners are not easy to find over here.
My Quadrajet is not running right and i have already had a local guy rebuild it but it's still not right.
I am reluctant to spend any more money on it.
Even if i sent it to be rebuilt properly, i would still struggle as i gather setting them up is not easy too.
I have done a lot of reading and opinions seem to point to the Holley 0-9895 spreadbore being the perfect alternative to the Quadrajet on the stock intake?
Easy to fit and tune?
Any advice would be greatly appreciated
My car is a 1978 L82 auto.
Regards
Norman
I am in the UK and specialist carb tuners are not easy to find over here.
My Quadrajet is not running right and i have already had a local guy rebuild it but it's still not right.
I am reluctant to spend any more money on it.
Even if i sent it to be rebuilt properly, i would still struggle as i gather setting them up is not easy too.
I have done a lot of reading and opinions seem to point to the Holley 0-9895 spreadbore being the perfect alternative to the Quadrajet on the stock intake?
Easy to fit and tune?
Any advice would be greatly appreciated
My car is a 1978 L82 auto.
Regards
Norman
Thread Starter
Advanced
Joined: Jul 2019
Posts: 61
Likes: 5
Le Mans Master
Joined: Mar 2004
Posts: 7,502
Likes: 1,509
From: Little Rock AR
Race Director
Joined: May 2006
Posts: 18,740
Likes: 2,583
Adjustments
Both the new Holley and the rebuilt Quadrajet will have to have their idle speed and mixture screws adjusted just like any carburetor. Neither one requires any specialty other than being old enough to know how to adjust a carburetor. There are tons of older American cars in the UK, somebody must know how to adjust a Quadrajet, it is not unique to the Corvette.
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
After Lars rebuilds a carb he runs it on a test engine in his shop. He tests air / fuel ratio and sets up idle speed and fast idle speed. He did my carb last year. I bolted it on and didn't have to adjust anything except my electric choke.
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Melting Slicks
Joined: May 2012
Posts: 2,192
Likes: 343
From: Allenton Wisconsin
The float sunk on my 68 Toronado with a Q-jet, a friend at the local speed shop told me to put a Holley spread bore on it. It took a few mods but after install it ran great, started easily and the gas mileage went up. My 69 vette came with A Q-jet, my friend offered me a Holley 6210-3 spread bore and I jumped at it. After install, a few adjustments it was perfect and the fuel economy jumped to over 20 mpg. The engine was a 300hp 350 auto and 3.08 rear gears. T