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Topic Review (Newest First)
05-12-2014 01:44 PM
F-BIRD'88 Barry Grant/Demon Carbs was bought up ny Holley and relaunched
as a new company.
Demon Fuel Systems
05-12-2014 09:38 AM
Originally Posted by BBCRedline View Post
I will not be buying any demon carbs, basically because they are out of business and I owned one once and that was enough.
Just noticed an ad for the Street Demon in july '14 Hotrod (pg 141), had a little faint Holley logo just above the Street Demon name...
05-12-2014 07:15 AM
F-BIRD'88 Very nice. √←
05-11-2014 08:44 PM
BBCRedline This is a follow up on the tunnel ram that I bought and motor combo. The engine ended up being a 540 with AFR 335 heads at 10 to 1 compression. Edelbrock tunnel ram with 2-750 QF carbs works awesome with timing locked out at 34*. As far as things changed on the carbs I removed the jet extensions and idle feed jets are 30.
06-12-2011 06:34 PM
BBCRedline This is based on my 540 with afr 335 cnc heads at 720 or so hp without it. I bolt on the tunnel ram and I could see up to 100 hp gain. Maybe 75 or 105 or who knows. I will have to dyno it both ways.
06-12-2011 05:41 PM
against all odds He said 100hp? Under what specific conditions?
06-12-2011 04:52 PM
BBCRedline I have thought of the cutting the hood thing. I have a lift off hood Harwood hood, so I can run the thing and see if I like it before the opening has to be made. I was just on the phone this last week talking to Joe Sherman about the whole tunnel ram thing. He likes them and says they can be a magical 100 hp add on. I will not be buying any demon carbs, basically because they are out of business and I owned one once and that was enough.
06-11-2011 03:21 AM
Originally Posted by BBCRedline
I have been thinking about running a weiand tunnel ram I have on my bbc but not sure which 4150 carbs to get?
Have you also given any thought to the big hole in the hood of your Camaro that's gonna be needed?
06-10-2011 04:53 PM
Originally Posted by against all odds
How do carbed tunnel rams start though?
Starting is not an issue. But you want to let the motor run for a while at a rised rpm above idle to allow it to warm up.

Hold it at around 2000rpm so it can warm up.

When some heat gets into the runners its ready to drive.

Functional chokes and fast idle, help.
06-10-2011 03:53 PM
lg1969 Mine starts up on a dime. I use the choke setup on the rear carb., only.
Just google tunnel ram 406 and you see what I mean.
06-10-2011 03:46 PM
Jake_Dragon Mine starts better than the single carb 350 in my other hot rod.
06-10-2011 03:35 PM
against all odds How do carbed tunnel rams start though?
05-13-2011 11:28 PM
NOlowrider Even better. I think you will be fine. A small diameter distributer might be needed though.
05-13-2011 05:26 PM
BBCRedline Thanks for the input. I wont have to worry about the torque converter as I have a clutch.
05-13-2011 01:04 PM
NOlowrider I ran the Weiand T-ram kit from Summit and I loved it. I had no problems. Never really even tuned the carbs, pretty darn close out of the box. Just make sure you have enough stall (3500 for me) and mine liked the timing locked out. 2 600 Holleys, no choke and no vacuum pods. Ran great, I just removed it for a blower.
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