Custom engine

[bob58o]

I know nothing of any carb with an adjustment under them

You can have an adjustable main jet on gx200 style engines too. I’m not sure how well they work.

 

[Rat]

You can have an adjustable main jet on gx200 style engines too. I’m not sure how well they work.

View attachment 144994

Christ that seems like more trouble than the issues it could potentially solve

 

[Rat]

Haven’t you guys ever heard of a tunnel ram?

As a matter of fact Yes, and Dodge/Chrysler referred to it as a "Cross Ram manifold" and theres a reason they disappeared faster than they showed up without ever really catching on.

They only had potential, but were otherwise a temperamental pile if junk to dial in that most scrapped for better upgrades instead.

That is basically what that is. Gasket match it, smooth out the inside with a long carbide burr on a die grinder.

not worth the bit or time

Do not polish it leave it rough.

this is true of any intake manifold. Smooth collects fuel wich then breaks away in droplets instead of staying a mist, or more appropriately "atomized"

And richen up the mixture. Put the air filter back on or an air filter of some sort.

That's the single biggest downfall and reason for cross ram manifolds being a useless relic!
If it's not near flooding rich it doesn't run for sh!t, when gas was half dollar a gallon nobody gave a rodents rectum.
Then the 70's executed cheap gas and TRUE American muscle cars... this computerized trash they make now isn't American and 500hp or not isn't muscle.

So again NOBODY with any amount of actually intelligence is going to piss about trying to tune the world's worst intake design with current fuel prices to get maybe 8 miles to the gallon 10 if you're lucky.

 

[Denny]

Actually the Chrysler crossram was an excellent item to make gobs of torque! They could out torque every other kind of manifold at the time. They were used on big cars from 58-64 and raced on the lightweight stock & super-stocks from 62-65. So yea, they proved themselves. The only time there were problems was when the average Joe thought he could out tune the factory settings on the carbs and screwed them up. There were many in the town where I grew up. Heck even the cop cars had them. My great uncle was a parts manager at the local Chrysler, Imperial, Plymouth dealership. And just across the border in Chicago, Ilinois was Mr Norms Grand Spaulding Dodge. Yea, so don’t believe everything you read!

 

[Rat]

Actually the Chrysler crossram was an excellent item to make gobs of torque! They could out torque every other kind of manifold at the time. They were used on big cars from 58-64 and raced on the lightweight stock & super-stocks from 62-65. So yea, they proved themselves. The only time there were problems was when the average Joe thought he could out tune the factory settings on the carbs and screwed them up. There were many in the town where I grew up. Heck even the cop cars had them. My great uncle was a parts manager at the local Chrysler, Imperial, Plymouth dealership. And just across the border in Chicago, Ilinois was Mr Norms Grand Spaulding Dodge. Yea, so don’t believe everything you read!

440 Sixpack was still better

 

[Denny]

Only because it was bigger. And not by much. But crossrams still made more torque down low.

 

[Abe]

Thanks for all the help I drilled the main jet and now it starts first pull

 

[bob58o]

Glad it worked.
In the future if you provide more details in the original post such as engine type and modifications, we can help you get back into more trouble quicker.
The only thing we know better than how to fix engines is how to break them.