Technical 383 SBC Build

Hi Guys,

I'm struggling a little on finishing my 383 SBC build for my 47 Chevy Fleetmaster Woodie Wagon street rod. What I have is a stage 2, 383 SBC, 210cc, 64cc aluminum heads, 278/284 adv dur hyd roller cam, .500/.510 lift. Running a Offenhauser 5694 dual quad highrise intake (360* model), with Sanderson Headers, th350 trans. Supposed to be in the 430-440 hp range. My issue is with carbs. I was planning on two 500cfm Edelbrocks, but started looking at the Street Demon 625. I really like the looks of the Street Demons, but are they going to be too much carb for this car. Plus they are only $325 apiece, Edelbrock are $400 apiece. My question is can the Street demons be setup to work on this 383 SBC.



Thanks for the help,

Art

 

https://www.chevyhardcore.com/tech-...-the-most-out-of-the-street-demon-carburetor/

Some improvements, yet running dual fours on an SBC, I'd prefer smaller CFM. Say 450 or thereabouts.
Back in the day, the Holley Dominator came out. Either 1150 or 1250(?) CFM.
(2) 625's?
Cylinder wash, our speciality!

 

I ran 450 Holley's on my 383

 

Yes, that is a lot of CFM and I would think that the mechanical secondaries won't be your friend. We all have opinions, but if I was in your position I would be on the phone with the Holley tech guys before spending any money.

 

Call Allstate Carbs in New York I think. Get a set of 500 Edelbrocks set up for 2x4. Great service and great product. They sell new and reman as well. I have gotten both from them over the years and they have been spot on. Really good price as well.

 

The Street Demons are vacuum secondaries. They also have smaller primaries. I will be speaking with them again today.

Thanks,
artwoodie

 

go to holley.com search for closeout they sell alot of refurbished and close outs at mostly very good prices