I just chatted with Butler. The tech portrayed the 230/236 cam as a solid choice that's and easy driver that would produce good power. Like you all, he said I wouldn't be giving anything up by going to the 236/242, especially on a 114, but I may need a bigger converter. Said there's maybe 10-15 ft/lbs and 15-20 hp difference between the two. Obviously, my heads are the overall limiting factor.
I asked about the RAIV roller grind and he said he'd choose the 236/242 hands down over it. He also indicated that it's geared more towards iron d-ports that need more help on the exhaust.
425-450hp is a nice step up from what I had, but I think I'd be disappointed with the mellowness of the 230/236. I'd much rather change out a converter than a cam later, so I'm inclined to switch it up and go with the bigger cam on the 114.
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Ken
'68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac ( build thread | walk around)
'95 Comp T/A #6 M6 - bone stock ( pics)
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