| [GMCnet] Re: replacing driver's side head on a 455 [message #362860 is a reply to message #362859] |
Tue, 16 March 2021 11:40   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Sorta like my answer to the frequent question, "Did you notice any power
loss when you went back to OEM from the Edelbrock Performer intake
manifold": "Not below 4000 rpm."
Ken H.
On Tue, Mar 16, 2021 at 12:28 PM James Hupy wrote:
> Yep, you would probably notice a loss in torque and horsepower around 5500
> - 6000 rpm or so. 1800 to 3600? Bet you not much difference.
> Jim Hupy
> Salem, Oregon
>
> On Tue, Mar 16, 2021, 6:57 AM John R. Lebetski
> wrote:
>
>> Yep the common 3-5 and 4-6 ports don’t create a clear pulse drive in
> those
>> header tubes, which then causes poor scavenging in 1, 7, 2, and 8.
>> --
>> John Lebetski
>> Woodstock, IL
>> 77 Eleganza II
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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