Roller Rockers?
#22
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It was 10 rwhp for me across the board switching from 1.6 S/A Promags to the Scorpion NSA 1.7's I have now. It's been over 3 years ago since I did the swap and never had an issue. It was quite obvious to me the stock cam prefers the 1.7's.
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Edit.... I'm not seeing any 1.7s listed for a LT1 on summits website?
#28
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10whp should be attainable for a lot of cars with the 1.7s, but if the lift is more than the heads will flow, it will not show the same gains.
#30
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No if you didn't have trouble reading you would have seen that I said they wouldn't show the same gain. Ask your dad to read it to you and explain it.
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#34
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I ran 1.6 ultra pro mags on my old setup. Then when we put my engine in a friends car I bought 1.7 scorps for it. Aside from being heavy, bulky, and aluminum they bottomed out on several of the rocker studs. The ploy locks were cheap and flimsy. They're just a cheap rocker, don't know what else to say. No different than pro form / summit junk.
#35
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I have ran the Harland Sharps, I have done them both ways, One set of heads I milled .250 and ran guide plates, or the other way the roller has a groove on each side of the valve.
#37
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Theres a sponsor on another site about to piece us together some GOOD roller rocker kits with the backset rockers. Im really wanting to go with them this fall. From what I understand a good set of 1.8 or 1.9 rockers should match the hotcam kit in performance while keeping a stock idle and not having the pain of a cam install.
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^^^^^^ you will still need diffrent springs. As for scorpion being junk, well maybe some have had there fair share of issues as with every part on the market its a percent of failure. But i have used the same set of scorpion rockers on 3 or 4 diffrent engine from a mild bolt on car to a nitrous motor and a turbo engine without any issues ever. i then sold them t a friend that now has them on his procharged lt1. over 30k miles and still going strong.
#40
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