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RON WOODGEARD · 12-17-2004, 03:20 AM

I have ran Tunnel Rams since the early 70's, Big Blocks and Small Block. The Old "Shoebox" and the Offy "Turbothrust" are dynamite street tunnel rams when carbed within reason.. Ya you're going to loose on the bottom end unless you find a Offy Turbothrust, it's RPM range is 1500 Up... But you MUST have LOW GEARS, so when you just get going you're close to the bottom end of the curve.!!

I have a new Turbothrust sitting on the shelf with 2 Holley 390 CFM carbs ready to go on my truck now, I want to get some of the other stuff out of the way before I put the Stall Convertor in and spend time tuning carbs together..

Tom Hand is right on with the EFI instead of Carbs,, That's crossed my mind also..

The engine, combo you have is Ideal for a Tunnel Ram !!!! what about your gears??

And I would play with those carbs, That's 900 CFM when needed !!

Tune the Primary jets down as far as you can, Then jump the Secondaries up to make up for what you've taken away..

Or even better yet, get a fuel/air ratio meter and set them up with it..

12-17-2004, 03:20 AM	#15
RON WOODGEARD Resident Young Old Dude ! Join Date: Jul 2001 Location: Nevada Posts: 1,948	I have ran Tunnel Rams since the early 70's, Big Blocks and Small Block. The Old "Shoebox" and the Offy "Turbothrust" are dynamite street tunnel rams when carbed within reason.. Ya you're going to loose on the bottom end unless you find a Offy Turbothrust, it's RPM range is 1500 Up... But you MUST have LOW GEARS, so when you just get going you're close to the bottom end of the curve.!! I have a new Turbothrust sitting on the shelf with 2 Holley 390 CFM carbs ready to go on my truck now, I want to get some of the other stuff out of the way before I put the Stall Convertor in and spend time tuning carbs together.. Tom Hand is right on with the EFI instead of Carbs,, That's crossed my mind also.. The engine, combo you have is Ideal for a Tunnel Ram !!!! what about your gears?? And I would play with those carbs, That's 900 CFM when needed !! Tune the Primary jets down as far as you can, Then jump the Secondaries up to make up for what you've taken away.. Or even better yet, get a fuel/air ratio meter and set them up with it.. Last edited by RON WOODGEARD; 12-17-2004 at 03:31 AM.