455 Question

taguy1979 · June 16th, 2004, 03:53 PM

Hi there I am new to the site but I was wondering if anyone could help me out with a few questions I have about my Olds 455. I have rebuilt the motor with just the stock pistons for now. It has J heads that were mildly ported with new valve guides, seals and seats and comp cam springs. I also have a comp cam 280H in it a holley 750 vacuum secondary. I am kinda wondering roughly what sort of power I would be looking at. I am also wondering how much of a difference would an aluminum intake make I heard from one person the only difference will be the reduction in weight then another person told me I would see a good power gain by switching intakes. I would also like to know what kind of improvement I would get from a totally adjustable vale train with 1.62 roller rockers? I am also considering a bore increase to either 30 or 60 over with forged pistons. Any help would be appreciated it is hard to find people that really know anything about Olds motors...

Oldsguy · June 18th, 2004, 10:21 AM

Hey taguy, I sent you a pm. Hope you got it.

taguy1979 · June 22nd, 2004, 12:01 AM

Yes i got your pm [img]smile.gif[/img] Thank you very much [img]smile.gif[/img]

June 18th, 2004, 10:21 AM	#2 (permalink)
Oldsguy Hot Rodder at heart Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 5,307	Hey taguy, I sent you a pm. Hope you got it. __________________ Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB.

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June 16th, 2004, 03:53 PM	#1 (permalink)
taguy1979 Junior Member Join Date: Jun 2004 Location: Calgary alberta Posts: 4	Hi there I am new to the site but I was wondering if anyone could help me out with a few questions I have about my Olds 455. I have rebuilt the motor with just the stock pistons for now. It has J heads that were mildly ported with new valve guides, seals and seats and comp cam springs. I also have a comp cam 280H in it a holley 750 vacuum secondary. I am kinda wondering roughly what sort of power I would be looking at. I am also wondering how much of a difference would an aluminum intake make I heard from one person the only difference will be the reduction in weight then another person told me I would see a good power gain by switching intakes. I would also like to know what kind of improvement I would get from a totally adjustable vale train with 1.62 roller rockers? I am also considering a bore increase to either 30 or 60 over with forged pistons. Any help would be appreciated it is hard to find people that really know anything about Olds motors...

June 22nd, 2004, 12:01 AM	#3 (permalink)
taguy1979 Junior Member Join Date: Jun 2004 Location: Calgary alberta Posts: 4	Yes i got your pm [img]smile.gif[/img] Thank you very much [img]smile.gif[/img]