Engine question

[Boggieman]

Hi all
I run a 400/4 in the CRMC parades, and whilst it is a lovely machine I would like a little more down the straights.
Can anyone tell me whether a 500/4 engine would slot straight into the frame, or what my best option would be?
Many thanks in advance.
Ian

[hairygit]

No, the 500/4 engine won't fit without a lot os messing about. Easiest option for more go is a 460 bigbore kit from cruzingimage, under £100.

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[Boggieman]

Thanks for that.
Ian