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Old 07-17-2020, 10:10 AM   #4
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Join Date: Sep 2009
Location: Aberdeen, Scotland

Yeah the stromberg is staying. I'm not so sure the single stromberg is such a power killer compared to twin SUs in the rpm range I'm talking about. The B20B with a C cam and 9.5 : 1 compression v the B20A with a A cam and 8.7 : 1 compression produced no additional power under 3500rpm. Between 3500rpm and 5000rpm maybe the single stromberg will lose out but how much in real terms?

What I'm really wanting to know is are there any real HP gains with 44mm inlets valves and 37mm exhaust valves and a little porting which is the stage 1 head under 5000rpm or are the gains pushed up the rev range with more top end power?
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