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Old 02-05-2007, 01:16 AM
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Jack Gifford Jack Gifford is offline
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Quote:
Originally Posted by Wade Congdon
... I am not for certain if the vintage Pontiac cranks used "straight shot" oiling or not.
They do, as I said before.
Quote:
Originally Posted by Wade Congdon
... They may have had some early version of it, however I beleive Crower is credited with the modern straight shot oiling system we are implementing of these cranks.
Your photos show the drillings to be identical to 'vintage' cranks, so what aspect of it is "modern"?
What I'm lacking is a post-'60 Pontiac crank to look at, to observe the rod journal oiling scheme- anybody?

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Old 02-05-2007, 11:01 AM
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Is 'cross-drilled' (Pontiac crank) and 'straight shot' the same is what Pontiac Jack is saying I believe.

I believe all 3.25" main cranks were cross-drilled.

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Old 02-05-2007, 11:12 AM
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Looking at post #37 pics provided by Wade, the 'straight shot' is different than the 'cross-drilled' crank.

The Pontiac cross drilled crank has the oil hole on the main drilled to the opposite (180º) side of the same main. The rod journal hole is in the same spot.

Wade's pic looks like the rod journal hole goes 'straight' through to the main.

Look at the pic in HO Racing's Engine book for a pic of cross-drilled.

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Winner of Top Class at Pontiac Nationals, 2004 Cordova
Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats

KRE's MR-1 - 1st 5 second Pontiac block ever!

W.E.C moment


"Every man has a right to his own opinion, but no man has a right to be wrong in his facts."

"People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates
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