Well they had a 413 (according to a 1971 article in rod set and super stock) inch originally, but it’s numbers on the block are those of a 428 pro stock engine which are noted in an article I have and Tom S confirmed . But I personally haven’t had it opened up . It’s got a stroker crank in it now and I have the orginal crank still.
As far as I know Nunzi had an intake Arnie beswick had an intake and steohens Pontiac had an intake. This is Stephens.
BOP has Arnie’s. And nunzi has his still
I have pictures of Arnie’s engine as well somewhere but he ran bigger carbs on it. Though as far as I know BoP has the original style 660 center squatters back on it.
It was only dyno d to 6500 and I believe the dyno sheet is earlier in this thread . I’ll hav ego look back and see made 600+ Hp
Intake is a developmental part number dual quad from Pontiac engineering that is shown in Mc carthys book
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Happiness is just a turbocharger away!
960 HP @ 11 psi, 9.70 at 146.
Iron heads, iron stock 2 bolt block , stock crank, 9 years haven't even changed a spark plug!
selling turbos and turbo related parts since 2005!
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