Originally posted by Orlando_87GN:
[qb]
Pros:
- <font size="2" face="Verdana, Arial">Cons:
<font size="2" face="Verdana, Arial">
- <font size="2" face="Verdana, Arial">Expensive! ~$1200 for a billet kit
- <font size="2" face="Verdana, Arial">Must use roller chain that typically stretches
- <font size="2" face="Verdana, Arial">Can't use GM tensioner
- <font size="2" face="Verdana, Arial">Must use different pushrods
- <font size="2" face="Verdana, Arial">Must use heavy valve springs
- <font size="2" face="Verdana, Arial">Must use odd fire torrington bearing setup on the nose (pita)
- <font size="2" face="Verdana, Arial">Must use shims under cam button (one more clearance to get wrong)
- <font size="2" face="Verdana, Arial">Heavier rotating mass in engine due to heavier lifters, longer pushrods
- <font size="2" face="Verdana, Arial">More stress on rocker shafts due to high spring rates
I think 90% of the Buick community doesn't care about high RPM and aggressive ramping.
Unless I am missing some benefits of running a $1200 cam in a Buick motor, I just don't get it.
It seems the further from stock configuration, the more hassle these engines become.
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REPLY:
Pretty well covers it sufficiently for many folks...appears you've cogitated on the topic adequately to have effectively presented a balanced assessment.
The very real fear of wasting/wiping out a lobe with a flat tappet has sold many roller set-ups, as you mentioned.
<small>[ August 11, 2003, 11:00 PM: Message edited by: NCBuickGN ]</small>