Aftermarket carb for 170?

[Signet Clint]

I have a 170CI, single barrel carb in my 65 Valiant. Are there any aftermarket carbs, or can I use a 1 to 2 barrel adapter, and if so, what carb to use?

 

[Bewy]

A Weber 2 bbl. Try RaceTep in Hollywood, Cal

 

[MadScientistMat]

There are Weber adapters, but often the hole for the single barrel is the bottleneck. The Super Six intake manifolds are often a good upgrade for someone who wants a bit more airflow without going crazy; they are set up for BBD carburetors but you can adapt others.

Another option - there's an Offenhauser manifold that lets you run a pair of 1-bbls if you want an exotic-looking but reasonably practical setup.

 

[RustyRatRod]

The two barrel intake is the only way to upgrade the slant 6 to a two barrel that will really reap any benefits. As mentioned, the bottleneck of the one barrel intake is huge. Also, unless you upgrade the exhaust at the same time, there's really no sense in doing the two barrel. That means either headers, or having the stock manifold ported and having the outlet opened up. I have a stock manifold on Vixen, my 64 Valiant that's been ported and the outlet opened up to 2.5" and it added quite a bit including other mods I did. The slant 6 needs a complete, systematic approach, not just one thing at the time like a V8 to see real benefits. Otherwise you'll be spending money seeing very little if no improvement.

 

[halfafish]

If you decide to go the two barrel intake route, I have a box full of Carter BBD's that would match up to that. Shoot me a PM if interested.

 

[Bewy]

The BBD would be a good alternative if the price is right....