What Carb to Run on my 408 Stroker Duster.

[TimS]

At the moment I have a Holley 850 QFT race carb on my 408 Stroker engine. I bought my 74 Duster back with the Original 360. Buddy of mine had swapped in this Stroker setup with Eagle kit. Would like to make a bit more streetable and tone the carb down. Any suggestions on that? Thanks.

 

[Illahe]

Spreadbore carbs work very well in street applications. Mileage and power on demand.

 

[mygasser]

if you like the power maybe just switch to an 850 vac sec, best of both worlds. to be fair a 750 vac sec would be fine also.
neil.

 

[fishmens67]

Holley 3310

 

[RustyRatRod]

Run two Thermoquads on top of some 2" spacers on top of a 6-71 on top of an 8" Rude Ron blower spacer. That'll get them puppies over the roof.

 

[autoxcuda]

What are the specs of the motor?

The double pump shouldn’t make it not streetable. Maybe run a 750 double pump or just a vacuum sec.

Does it have a single plane or duel plane intake.

 

[Dan the man]

Spreadbore carbs work very well in street applications. Mileage and power on demand.

There's not a spreadbore intake manifold available for the sbm's.

 

[Illahe]

There's not a spreadbore intake manifold available for the sbm's.

Weiand 8007WND Weiand Action Plus Intake Manifolds | Summit Racing

 

[George Jets]

eBay item number:196224008731


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[RustyRatRod]

 

[RustyRatRod]

There's not a spreadbore intake manifold available for the sbm's.

You're tarded over.

 

[Oldmanmopar]

I ran a 1050 on a 416 out of the box, added a 2.5 power valve and larger air bleeds, Worked perfect through RPM's with a rich lean gauge on each bank to tune it. I started with an 850 went to a 950 and then a 1050. It like that 1050,

Cam , Heads, and tube size plays a big roll. If you can't let it out you can't bring it in. 686 roller with indy 360 -1 heads. and 2 inch primaries through 3 1/2 exhaust with mufflers. 12.8 -1

 

[Dan the man]

You're tarded over.

Show me a brand name and part number. I already know that you can't, and the factory intake manifold doesn't count because I'm talking about what's available everyday and not just once in a while.

 

[Dan the man]

Weiand 8007WND Weiand Action Plus Intake Manifolds | Summit Racing

Must be something new. Was looking for one earlier this year and nothing showed up. I'm going to save this to my phone

 

[Dartsun]

I run a 750 Brawler vac secondaries on my 375hp 408 blueprint engine. I've put smaller jets on it and it runs pretty good.

 

[Dan the man]

You're tarded over.

Well, you was right for a change. My bad. I looked earlier this summer and I couldn't find a spreadbore intake for a sbm

 

[a-bodyguy]

Must be something new. Was looking for one earlier this year and nothing showed up. I'm going to save this to my phone

Well, you was right for a change. My bad. I looked earlier this summer and I couldn't find a spreadbore intake for a sbm

You are wrong every time

 

[Professor Fate]

There's not a spreadbore intake manifold available for the sbm's.

And these can be opened up for a spreadbore with a die grinder in about 5 minutes:

Plus, the factory manifolds

 

[Dan the man]

You are wrong every time

At least I was man enough to admit it, you have to give me credit for that

 

[Illahe]

At least I was man enough to admit it, you have to give me credit for that

The factory cast iron spreadbore works fine for mild applications and the early one has the hot air choke. The last one I ran into cost $25 bucks.

 

[TimS]

if you like the power maybe just switch to an 850 vac sec, best of both worlds. to be fair a 750 vac sec would be fine also.
ne

750 vacuum secondary sounds good.

 

[TimS]

I do have the original factory spread bore intake and thermoquad. I did think of trying that and would be an easy swap.I like the hot air choke deal too. This electric choke I have on it now is worthless.

 

[340six]

Well, you was right for a change. My bad. I looked earlier this summer and I couldn't find a spreadbore intake for a sbm

So the car you bought has one? Congratulations

 

[RustyRatRod]

View attachment 1716460956View attachment 1716460957View attachment 1716460958
And these can be opened up for a spreadbore with a die grinder in about 5 minutes:
View attachment 1716460966
Plus, the factory manifolds
View attachment 1716460971

Holley Street Dominator is another.

 

[RustyRatRod]

So the car you bought has one? Congratulations