Getting the Intake on Intake Manifolds

Brockway Bill,

I have found that the Thermoquad from the '1978' 318 Truck Engine
#9123 {M/T}
#9124 {A/T}

Works best with the 'Holley' {300-7} 'Strip Dominator', especially on a 'Stock'
or 'Mild' 318 Engine.

Usually with no more than Headers {or a good tuned Exhaust System}.

And with a 'Hydraulic' Camshaft with a Lift of .445" and Advertised Duration of 260*.

Any Camshaft that was more 'radical' than the above specifications, was a wasted effort with the Holley 'Street Dominator'.

These Carter Thermoquads came thru with;
* Primary Jets .......... .092"
* Secondary Jets ...... .110"

Depending on who you talk to, these 1978 'Thermoquads' were rated
at anywhere between > {580 CFM's} to {650 CFM's.}