Rocker arms
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Senior User
Joined: Nov 2007
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From: Naples, FL
Rocker arms
Is the increase in power for 1.7 rocker arms really worth the money? Does anyone have any suggestions on what ones to buy? Also do you have to replace the factory springs or anything to put these in or is it pretty much just a swap the old stock ones out for the new ones?
Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
Ford found a 15 hp increase in using full roller 1.7's over the stock 1.6 stamped steel rockers in their development fo the 93 Cobra 5.0. Some is due to the increased lift, some from the stabilized ratios and most from the friction reduction in the roller trunion. No other mods needed for pedestal full roller 1.7's, just change the pushrods when you do the rockers (if your motor's a roller cam and has about 100K miles or more on the pushrods)
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
1.7 rockers provide a pretty good boost to total valve lift pushing it from 0.422/0.448 to 0.447/0.476, but the duration remains much the same so the powerband doesn't change a lot. Most people with 1.7 RR's report a nice boost at max rpm but not as much elsewhere. Combined with longtube headers they are probably the best upgrades for the 302 in the relatively easy to add category.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Originally Posted by codyingersoll123
ya but do you really think its worth the money? or is there something better powerwise for about the same money?
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