850/900 hp
#22
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We all know about and we all play the "trade off game" when it comes to building our power. I believe the OP has to decide if he want's to have a big vacuum pump with a soggy bottom end (900-1000) NA motor or something more manageable (800) NA I agree with Mike about longevity, but only the OP can make that decision. I have had both versions over the last 40 years, and lately lean towards strong reliable power over brut solid lifter cam, big cfm carbs that have low engine vacuum, Not talking blowers or fuel injection, but I digress.
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I agree that a 900hp blower combo is much easier to build, and will be a milder engine. But, 900hp from a 598, or 632 is not unattainable, and the OP clearly stated he doesn't want blowers. So.... If it were me, I'd shoot for 10.5 to 10.75 comp, low lash solid 55mm cam, .904 lifters, 7000rpm, heads that flow close to 450cfm with the smallest chamber you can get, steel shaft rockers, Ti valves, tunnel ram with EFI, and a dry sump for sure. With the money you save on the blower, you can purchase lighter, better quality parts and components to help with longevity and durability. You'd have a hard time making that power with a conventional off the shelf ring pack, and a wet sump. I always think it's cool to do something a bit different. It'd be great if we could get some of the big power NA guys to post their experiences on this thread.
Last edited by HaxbySpeed; 11-18-2013 at 09:34 PM. Reason: iPhone spelling issues
#26
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I agree that a 900hp blower combo is much easier to build, and will be a milder engine. But, 900hp from a 598, or 632 is not unattainable, and the OP clearly stated he doesn't want blowers. So.... If it were me, I'd shoot for 10.5 to 10.75 comp, low lash solid 55mm cam, .904 lifters, 7000rpm, heads that flow close to 450cfm with the smallest chamber you can get, steel shaft rockers, Ti valves, tunnel ram with EFI, and a dry sump for sure. With the money you save on the blower, you can purchase lighter, better quality parts and components to help with longevity and durability. You'd have a hard time making that power with a conventional off the shelf ring pack, and a wet sump. I always think it's cool to do something a bit different. It'd be great if we could get some of the big power NA guys to post their experiences on this thread.
Last edited by mike tkach; 11-18-2013 at 09:52 PM. Reason: i still spell like chit.
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Yes, I'd use a lateral gas port with a lower tension .043 barrel faced top ring. It will actually reduce ring wear because it only applies additional pressure on the power stroke, the rest of the strokes the lighter ring tension will help reduce wear and free up HP.
Last edited by HaxbySpeed; 11-18-2013 at 11:04 PM. Reason: added a word