Main British Car:
'77 MGB Roadster Ford 347
1977 MGB / Mantell Ford V8 Kit #142
Posted by: Chris Lindh
Date: April 13, 2016 06:09PM
Dyno video here: [youtu.be]
I had my Ford V8 on an engine dyno Friday, 338 hp, 383 tq. The dyno operators didn't like the air fuel ratio fluctuations from 9s to 13s. Their theory is the EFI cam does not allow the carburetor to deliver fuel correctly. Best power was made with 70/76 jets, 7.5 power valve. The engine will be fuel injected using MS2 when installed into the MGB.
Ford 347 details:
1388 AFR 185 Heads
35-308-8 Comp Cams 266HR EFI Cam, 0.533 lift, 266/270 (210/215 at 0.050) duration, 114° Lobe Separation
1-94180 Scat Rotating Assembly 3.4" stroke, 4.030" bore, compression 9.6
U650HO AED Ultra Carburetor
Weiand 8124 Intake Manifold
This 1977 MGB was my first car, found it on a car lot when I was 15 in 1990. It sat in a field from 1998 to 2010.
Mantell conversion kit; a special thank you to Pete Mantell, always responsive to my questions.
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