Sigma-galant.com

I figure there may be a few more twin 45 builds down here that someone might be able to get me in the ballpark.

I'm using a late g54b flat toip with a small chamber head. Should be up around 11:1ish compression.

I will be getting a cam ground for it, but havent decided on a durration yet

Carburetors are dellorto dhla 45s on a short runner intake.

I'm going to opt for the biggest chokes I can, as I think the 45s might already be a bit small as I can only buy 40mm venturi/chole

I'd like to shoot for power up to about 7k rpm if possible, but thinking I may be under carbed

Anyhow, if anyone has some experience, and can get me in the general area, I would be much appreciated as i dont wanna go broke buying jetting

I have a pair of 55mm DCOE's on my 54......

Spec's off the top of my head are.....

Chokes 42mm (to small, I need 44's or 46's and 48's are to big)
Primary jets; 55's
Main jets; 165's
Air correctors; 205's
Fuel pressure; 4psi

My thing has a massive bottom end and runs out of puff at about 5700rpm. It will turn new 205 semi slicks in the first 3 gears! I have 44 & 46 mm chokes on order for it and will then tune accordlingly from there.

Thanks for the replu, big help/ I had a feeling from reading some of the builds, an then looking at the dellorto chart these wouldnt flow very well up top, but thats what I have right now. Hard to find 55s at a decent price.

What are the specs on your cam, and what kind of timing are you running? Stock dizzy or recurved?

Shaun