a429 build

who has made the most power with a set of a429 heads ported? On a 557 specifically N/A

https://www.429-460.com/t3551-557-a429-bracket-build-dyno-results

And a Cast CJ for Comparison.

https://www.429-460.com/t6600-557-iron-cj-build

A429 had a Victor intake and the cast CJ had a Mafia intake and smaller cam. It (iron CJ) peaked 200 rpm's higher, just saying. A couple of other differences where maybe header size and carburetor size (100cfm) and maybe tad of compression.

I don't have 557 mine is a 552 it makes by time slips and weight off Wallace Racing calculator 728 hp

I thought these 2 were interesting. Same combo from a 466 to a 534 with ET's.

https://www.429-460.com/t631-466ci-a429-heads-roller-drag-car-combo#6196

And after the crank swap.

https://www.429-460.com/t282-534-ci-a429-heads-roller-drag-car-combo

Not a 557 but, Extremely Nice with a SFT Cam.

https://www.429-460.com/t25629-480-class-pulling-engine-a429-heads

An old Kaase 519 pump gas build with a 4.437" bore from 1998.

https://2img.net/h/i273.photobucket.com/albums/jj226/carmagguy/519StrokerPerformanceGuidepage6.jpg

As you can see they where ported all the way into the exhaust bolt hole.

https://2img.net/h/i273.photobucket.com/albums/jj226/carmagguy/519StrokerPerformanceGuidepage4.jpg

Article from proven builds thread courtesy of 83-88 T-Bird Guy.