Technical Tunnel ram

Does anyone know anything about this intake, does it look like it has a restrictor plate or something in the plenum

 

Look’s like the floor of the plenum (top portion) to me.

 

Thanks Johnny, new to these tunnel ram stuff, thinking of putting one on my 54 chevy belair

 

Its not a restrictor - its just a mismatch between the top and bottom castings.
If you want, you could blend the mismatch with a grinder, but on a street driven vehicle you will never see any improvement in performance.

If you plan to run it on the street use the tiniest carbs you can find. You may as well adapt up two two-barrels for all the time a 4V secondary will see opened up.

 

Or two four-barrel carburetors, with the secondary barrels disconnected.

 

I have two matching holley 600 will they work

 

Is it a big block?

What is the LSA of the cam you intend to use?

 

No a 355 ci 1971 vintage, p/w aluminum heads 11.5 compression, Harland sharp roller rockers, stud girdle

 

Big cam in it, solid, I will get the specs

 

Here is the dyno sheet on it before I changes the heads to aluminum, there where cast on the dyno

 

No! two 600's is far two much for driving around the street with SBC with that type intake, or anything like it.
If your only drag racing,go for it!
That intake is a drag-race intake,not good for street use,no matter how good a carb tunner you are,it will never be smooth on the street{not enough RPM }.
A few use that type,think it looks cool,but put up with poor running=Thinks,all they need to do is a little better adjusting< nope.
You'll be better off finding a intake that has a lot less space under the carbs for street driving.

 

Two things:

If the last number on the cam line is indeed 105ls, as in a 105º Lobe Separation Angle, then you are going to be very unhappy with a tunnel ram, with any size carburetors.

The resonance in the runners created by both the intake and exhaust valves being open at the same time will hamper low speed fuel metering, and, at the lowest rpm's, might actually PUSH fuel mist back up out of the carburetors.

And:

It is right there on your dyno sheet. Look at the CFM numbers.

You are talking about putting 1200cfm in carburetors on an engine that pulled in only 634cfm at a 6600rpm redline*.

@dana barlow is correct here. This would be an untenable setup on the street.

I would argue that it would be marginal on the dragstrip, too.