Oversized Valve Benefits?

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Jan 14, 2005 | 12:49 PM

Boother

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Teching In

Joined: Sep 2004

Posts: 32

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From: Winnipeg Manitoba

Oversized Valve Benefits?

I am looking to have a set of stock LT1 castings ported locally to go along with an LT4 Hotcam kit. I am not looking for huge power, but the more the better. I would like to go to a 2.0/1.55 valve setup, but I am debating the gains to be had for the significant cost increase (valves and machine work).

What are your thoughts? Will I see a big advantage going with some bigger Manley Race-flo valves over the stock size?

Approximately how much is it to have the seats opened to the larger size and a 3-angle grind?

Thanks.
Mike

Jan 14, 2005 | 05:48 PM

Racin'96 SS

Staging Lane

Joined: Oct 2004

Posts: 95

Likes: 1

My RGR heads have 2.02/1.57 valves and made the power in sig. If you afford the bigger valves then you will get more cfm and make more power...how much depends on cam and other mods.