swingingdart
Well-Known Member
Is there a way to tell the cfm of a thermo quad? I'm getting ready to start shopping for one either on here or around where I live and would like to get one thats for an early 70s 318 or 340, anybody know?
Any more carb than required results only in unnecessary de-tuning and jetting to correct a/f ratio to best possible calibration which will still be unattainable as min. jets and alterations are still better suited to hungrier engine.In other words big bog.
These carbs )T-Q's) were first made as racing carbs making an appearance in 1969. IIRC. Since they were on production cars, they became the only carb possible to run in certain classes of racing where you HAVE to run a stock carb.these carbs were only installed to satisfy necessary new car production requirements to run on specially sanctioned event cars that were altered from their stock versions.youll be much happier and snappier with the appropriately sized bore for your efficiency and r.p.m. requirements
(Thanks Stroker Scamp)
Every once in a awhile, I see a car listed as the winner running a T-Q.
I have a electric choke T-Q @ 800 cfm. It's designed as a stock replacement carb. This one I have even has a Chevy arm on it. It was a bit weak on the 400 and probably best siuted to a daily driver 318 or 360 with little to no fan fare on the engine.
I'm tuning (Today) a big T-Q on the 400. The lack of rods and jets can be semi solved in two ways, Purchase used T-Q's for the rods and jets or visit FABO member Demonsizzler @ http://www.thermoquads.com/ for a kit to tune it up.