Im pulling my motor, looking for advice/recommendations on a mild build, block is a 399289, solid lifters (stock im sure) looking to do a good combo for top end
Thanks in advance!

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496 stroker!!


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I based mine off of a ZZ454

454, .030" over, TRW forged pistons.

ZZ hyd. roller- .510" / .540",  211° / 230°, @.050"

mine- Howard's hyd. roller, .567" / .578",  225° / 231°, @ .050".

ZZ454 heads- oval port aluminum, 110cc, 2.19" int., 1.88" exh.

mine-  iron oval port, 100cc, 2.06" int., 1.71" exh.

ZZ comp ratio- 9.6:1 (GM optimistic guess)
mine- 8.99:1 (calc'd, not guessed)


ZZ intake- Dual plane GM
mine- single plane Eddy Victor Jr rpm.

Pulls an American Turbine AA to 4900-4950 on pump gas, thru logs and snails.(505 hp by the charts)

ZZ454- 469 hp @5500,
519 lb/ft @3700

Hope this helps
Dan'l

Hi there, What is your definition of Mild?  What parts are you looking to re-use?  What power do you have now?  RPM?  do you have a target to look for?  Budget?

Then we can give you suggestions.  Thanks!

This is a more fresh build, just done wrong, main bearing gone and he had header plumbing horribly wrong! Was pulling water, im not looking for anything crazy but to flow good, talking with a builder now about the right path

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496 stroker!!


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Update: definately building a 496 now

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