455 Question

taguy1979 · 06-16-2004, 02:53 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 · 06-18-2004, 09:21 AM

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

taguy1979 · 06-21-2004, 11:01 PM

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

06-18-2004, 09:21 AM	#2 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,859	Hey taguy, I sent you a pm. Hope you got it. __________________ Dan '46 2 door

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06-16-2004, 02:53 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...

06-21-2004, 11:01 PM	#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]