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foamfence, December 12, 2018 in Speedway News and Discussions
It's actually a GM NX. Most tuners test with it these days.
Any ideas of the spec of the gm nx? apart from looking cool what are the advantages of this over the current crop of gm's.
He designed a new head/cam design this last Mar/Apr time which is the bottom, middle picture on his twitter page. https://twitter.com/pjrGM/
This is supposed to be as good as the current crop of GM's but PJR is going down the route of extended service life. Along the lines of the new Goddan and Gerhard. That's what I understand anyway. We'll just have to wait and see.
Earlier this year, it was mentioned that GM & Jawa were developing engines with better oil circulation to extend service intervals.
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