Split Carburetors- Fad or Worth It?
- Thread starter BarracudaWild68
- Start date
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Someone here has one.
Rat Bastid
Dunamis Metron
I played with some IR stuff about 15 years ago. Too big a plenum kills bottom end. Too small a plenum kills top end. No plenum is a bit problematic and it was always down on power
everywhere.
everywhere.
pishta
I know I'm right....
they are on the cover of a LA buildup mag i had for the 273! 1965 write up iirc. they had the end carbs left to right and the 2 middles inline with the heads...figure that linkage out! IR stacks with individual injectors is so much easier to manage.
Just get a cross ram and be done with it. Same principle.
Rat Bastid
Dunamis Metron
No kidding?
Maybe you should have played a bit more with IR, you might have learned something...
"Too small a plenum kills top end". Post #28. The logical conclusion from that is NO plenum would reaaaaaaally kill the top end.
How does 702 Hp from 427 ci sound with four 58 IDA Weber carbs? NO plenum.
"Too small a plenum kills top end". Post #28. The logical conclusion from that is NO plenum would reaaaaaaally kill the top end.
How does 702 Hp from 427 ci sound with four 58 IDA Weber carbs? NO plenum
Rat Bastid
Dunamis Metron
So what? Read it again. Too small plenum kills top end power. Simple as that. Your useless numbers are just that. Without seeing the curves and some other data, it’s all make believe. And quite contrary to popular myth, too big a plenum will kill bottom end. No plenum is a power loser. Every time. So the next time you see an Edelbrock tunnel ram with a big mail box top on it you know down low it’s a slug.
Ironracer
Gearhead
Reminds me of split rocker boxes on Ironheads and Shovels. ..
Post #33. Curves & data are on p. 103 of DVs How to Make HP Vol2, SA books #52. Engine made 625+ ft/lbs of tq @ 5100 rpm. The 702 hp peak was made at about 6600 rpm, which makes NONSENSE of the claim in post #34 that no plenum kills top end power. It's about sizing the induction system to the engine size & reqd HP. Holley also knew this & made a 4500 carb [ # 6214 ] specifically made/calibrated for IR use; it had more total airflow, 1150 cfm, & larger venturiis than the other 4500s.
Rat Bastid
Dunamis Metron
Did he test it against a manifold with a plenum? If not, you have no idea how much power he gave up with that IR set up. You could use IR crap in Pro Stock, but not one of those dumb asses did it. They sure are some idiots for not reading Vizards book and going IR. And 6600 rpm isn’t high rpm. That’s barely over street rpm.
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