Re: using early ramhorns on a 350
To my knowledge all rams horn manifolds have the same exhaust port size.
Most truck/car manifolds have 2" collectors, Some Corvettes had 2 1/2" collectors.
I run 300hp LT1's with 283/327 rams horns on Jaguar conversions all the time, Finding a good matching set is hard, If yours are not cracked, Put the money toward having them resurfaced & put them back on with NO gasket "I use a VERY thin coat of High Temp Red Permatex silicone" Torque new grade 8 manifold bolts to 35 ft.lbs. Retorque in 100 miles...They will never leak!!!
Rams horn manfolds never had gaskets from the factory.
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