gingg Posted March 27, 2011 Report Share Posted March 27, 2011 ive got a spare motor sitting in the garage wouldnt mind rebuilding it and getting best specs for it, has any body built a performance one before? any things i should get? the motor im using only got 68-000 miles out of my 73 620, (front mount) Quote Link to comment
Gary Posted March 27, 2011 Report Share Posted March 27, 2011 theyve got a lot in common with BMC B series engines, id probably look to those for performance bits. BMC also had a twincam version, which would be pretty cool theyre 3bolt mains though which might limit things, best to ask engine builder what he thinks Quote Link to comment
Spedie Posted March 29, 2011 Report Share Posted March 29, 2011 I'm running an mgb intake and exhaust, along with a reground camshaft to mgb performance specs. Electronic ignition and lightened flywheel help too. You can look into running a j13 head with j15 valves to bring the compression up. There is performance stuff out there for the mgb that should fit, but being crazy expensive, its risky. They sell crossflow cylinder heads, and other crazy valve train parts for them. The mgb guys have had success with supercharging, you can look into that. Quote Link to comment
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