dual quads

Whats up Maniac ? I like the idea of 2 throttle bodies on top of a tunnel ram.kicked that idea around when I bought the 78 for shits & giggles. Hows the fingers ?
Ok and healing.
No pain.
Take few weeks for the skin to grow back.
Pinched so hard the skin popped off the side of my fingers insant.
 
I can see why the Offenhauser Dual Port Intake got such a bad RAP Grumpy.
Even an experienced hotrod race tuner it's leaves you scratching your head what is going on ?

It's 2 Single plane intakes stacked on top of each other.
A diveder wall in the ports for primary and secondaries.
Intake velocity is so high even at idle speeds.
Has to be 300 ft per second.

It wants a Huge accelerator pump shot exact like a 950 Horsepower Dirt Track Race Engine uses.

50 CC accelerator pump kit for 4500 Dominator fits 4150.

Go .020 bigger on accelerator pump squirter size.
Stock in 770 cfm Street Avenger Is .025.
Went to .045 " now with hollow pump screw.
Seems excellent.
Going for a test drive.
Revving up like a High Compression dirt track SBC NOW.
 
Where is your build thread ?
I never new you were actually building something.
I thought you were just collecting. lol
 
Where is your build thread ?
I never new you were actually building something.
I thought you were just collecting. lol
I had one I used for everything I work on in the past.
It was in the Lounge we had.
That is gone now. So is my
Main thread.
So just post around random.
A Few threads I create.
No more big threads I will do here.
 
I had one I used for everything I work on in the past.
It was in the Lounge we had.
That is gone now. So is my
Main thread.
So just post around random.
A Few threads I create.
No more big threads I will do here.

Hold over sign in name and look under "your content". Might still be there.
 
while this was interesting it shows the tunnel ram having a minor boost in only higher rpm power over the cross ram
its been my experience that the cross ram almost always has marginally better torque from about 3400rpm through about 5700 rpm, above about 5800 rpm there's always a bit better power from a properly tuned tunnel ram, but keep in mind the cross ram intakes designed for road racing trans-am camaros where the cars engine must provide power over a wide rpm band, and the tunnel rams almost exclusively used only for wide open throttle drag racing use.
its been my experience that the properly tuned cross ram like the edelbrock or offenhauser makes for a much faster car if you use the car for street strip and daily driving, plus you don't need to have a set of carbs sticking through the hood with a cross ram on many SBC cars
BTW the CRANE 110921 or similar cam used with 1.6:1 roller rockers in a 10.5:1 compression 377-406 SBC with the cross ram intakes
and decent heads, with 195cc- 200cc ports , properly geared have proven to be winners on the track
early 302cubic inch Z28 camaros came with an OPTIONAL extra cost ,dual quad cross ram intake in the trunk,
Ive worked on several in the past and significant power gains could be had, swapping to a cam similar to,
a crane 110921 solid lifter cam,
www.summitracing.com

Crane Cams 110921 Crane Mechanical Flat Tappet Camshafts | Summit Racing

Free Shipping - Crane Mechanical Flat Tappet Camshafts with qualifying orders of $109. Shop Camshafts at Summit Racing.
www.summitracing.com
www.summitracing.com
especially in a larger displacement 11:1 compression engine ,
which was very commonly done, and I built several 377-406 SBC with the cross ram intakes ,
4.11:1 rear gears and muncie 4 speeds, headers etc. which really made the camaros noticeably faster
two 650 cfm carbs (ideally double accelerator pump versions work well)

ofy-5893.jpg


cross-ram-manifold.jpg


verifying your real advance curve

 
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