BigBronco

iTrader: (2)

A big thanks to John Beck @ Beck Mechanical by the way. Another great Manifold

It is definitely a little better then stock.

BigBronco

iTrader: (2)

More Pics@!

Toonz

iTrader: (6)

SWEET! Looking good Gray!

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that intake looks sick

skipperbisket

iTrader: (4)

i'll take a 511 with some C6R heads and one of those manifolds bunged for two wet stages

BigBronco

iTrader: (2)

it is already bunged for one

skipperbisket

iTrader: (4)

perfect, i'll just run one big shot instead of two moderate ones. box it all up and sent it to Fort Worth.

1Last69

More compression on what, my 69?? Thats what you get when you put RAIII heads on a 455. But then alot of people dont speak vintage Pontiac, but thats ok.

1Last69

Also, in older Pontiac motors, since they rely on a bore/storke ratio that leans more toward making torque, too much compression actually works against itself slowing the engine down. You might not get much more than 550 hp out of a reliable 455, but making 600+ ftlbs is like falling off a log.