roller rockers
08-04-2013, 12:41 PM
#41
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Kurt Urban was providing that service. I'd have to seriously DIG to find that thread though. Personally I'd just pick up the phone Monday and call. I *think* the coating was around $200? Don't quote me though.
And agree with the Scorpions. Had some major issues a few years ago, but not a single failure that I'm aware of since their last revision. And 100% American made. But again, it's weight. I was told by 3 specific builders to sell the ones I had and not even install them; stick with trunion upgraded stockers. They were full aware of my .631 lift as well.
Take that for what's its worth.
And agree with the Scorpions. Had some major issues a few years ago, but not a single failure that I'm aware of since their last revision. And 100% American made. But again, it's weight. I was told by 3 specific builders to sell the ones I had and not even install them; stick with trunion upgraded stockers. They were full aware of my .631 lift as well.
Take that for what's its worth.
- 89 grams for the intake an
- 67 grams for the exhaust
Valve spring:
- Close pressure 150
- Open pressure 420
And the engine is not showing any signs of valve-train instability revving it to 7500 rpm...
For now........
Christian
Last edited by miami993c297; 08-05-2013 at 11:40 PM. Reason: accuracy
08-05-2013, 08:27 PM
#42
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iTrader: (5)
Not to mention of clearance issues associated with (adjustable) roller rockers. Lunati shaft mount adjustable, they don't fit under stock V/C's or with 1/2" spacers. There's a lot of measuring, bluing, milling etc, hours of clearance work. NOT worth it IMO, use stock with trunion upgrade but if it has to be roller call the MFG's tech line and find out if they fit under the stock style V/C, if they say no....RUN.
