Odd '163 intake

[HS PROFESSOR]

I've run rectangle to oval many times. As different as the ports are it will still run unbeleivably well. Oval to rectangle works real well.

[nuch_ss396]

Bob,

When starting out in the big block world, I was cautioned
numerous times to be careful about buying any BB engine
without checking cylinder head casting numbers for exactly
the reason you mentioned. Seems that a common ploy used to
be putting a rectangular port intake on an oval port engine
and selling it as an SHP verient. I heard if it being done,
but never with a positive spin regarding performance.

I would think that the great interruption of air passing
through the rectangular passages of the intake hitting the
oval ports of the heads would be counter productive to air
flow due to turbulance.

In your opinion, how well does this setup perform? Just
wondering.

Steve

[firstgenaddict]

I have seen it done before as well... bought a 69 Nova with a rectangle intake on oval heads... we changed the intake and did not pick up any time in the 1/8th... Suprised the hell out of me.
Then we went back to the rectangle intake AND put on rectangle heads... then we picked up a bunch o time... about 1 second in the 1/8th also put a solid roller bumpstick in it... maybe that was the reason for the pick up in time...