I contacted Alex's last night and they said I need to use their Max Output spring set because the duration on the XE274 cam is higher than 226 @.050". The maximum duration on their High Performance set is 226.
Their Max Output are here:
Can you give me your opinion on this set - I'd appreciate it.
I'm not an expert in spring selection/replacement - but no time like the present to learn! I'm lucky to have a garage buddy who's a career master tech at the local Lincoln shop and he has every tool we've ever needed and has performed every repair we've ever done, so I have great support.