Discuss 1.6 & 1.7 Roller Rocker differences? on AllFordMustangs.com, the place for Mustang enthusiasts.
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I bought a set of crane roller rockers from a guy on ebay that said they were 1.6 but when I tried to get a little info on them, the number on the rockers wouldn't come up anywhere. I talked to the tech guy at summit and although they had crane cams imbossed on them he claimed they weren't a crane rocker. The number was not a crane number. I figured that seeing as they were a few years old (but never used) that the numbers were different. So I sent the guy a pic of them and he said that they were made by crane for ford to go on the 93 cobra and also that they are 1.7 instead of 1.6 like the guy claimed they were. hence, watch what you buy on ebay. this guy apparently didn't know what he had. Not to mention I had no contact from him for 8 days, and then it took another week and a half to get them. crap, rambling. anyway, whats the difference lift wise between the 2. the cam I'm going with is 500 lift w/1.6 rockers. Also if anyone has any info on these rockers(#F3ZE-6529-AB) let me know. thanks a bunch.
The 1.6 moves the valve a distance that equals the lift measurement of the
cam, times 1.6. So the 1.7 opens it a little bit farther. Better use some
clay, if noone can confirm for sure that they will work with your cam, heads
and pistons.
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1992 Deep Emerald Green Mustang GT Hatch, 5 speed, 2.73s, Mac fenderwell cold air intake, '93 Cobra MAF, Mac 70mm throttle body & spacer, Explorer intakes, Mac unequal headers & offroad pipe, Magnaflow catback, Walbro 110lph fuel pump, Jet adjustable FPR, MSD Blaster coil, Accel 8mm wires, FRPP aluminum quadrant, UPR firewall adjuster, stock cable, Granatelli upper control arms.
Waiting to go on: Granatelli lower control arms, and GT40 Iron heads!
1992 Deep Emerald Green Mustang GT Hatch, 5 speed, 2.73s, Mac fenderwell cold air intake, '93 Cobra MAF, Mac 70mm throttle body & spacer, Explorer intakes, Mac unequal headers & offroad pipe, Magnaflow catback, Walbro 110lph fuel pump, Jet adjustable FPR, MSD Blaster coil, Accel 8mm wires, FRPP aluminum quadrant, UPR firewall adjuster, stock cable, Granatelli upper control arms.
Waiting to go on: Granatelli lower control arms, and GT40 Iron heads!
go baby go.... gone...stock 5.0 short block gt 40x303 heads crane cobra 1.7 roller rockers ported lower intake kenne bell supercharger 70 mm edelbrock throttle body kenne bell 80 mm mass air with switch chip calibrated to 30 lb ford racing fuel injectors with bbk 190 lph fuel pump kenne bell ram air kit with a K&N filter MSD 6 al btm ignition with boost control bbk shortie headers bbk off road H-pipe with new o2 sensors flowmaster 3 chamber cat back exhaust maximum motorsportschassis/suspension
The clay goes between the valve and piston. The impression made at TDC
is your clearance. It's worth checking, because the clearance is slightly
less at say, 7000 RPM if I'm not mistaken.
__________________
1992 Deep Emerald Green Mustang GT Hatch, 5 speed, 2.73s, Mac fenderwell cold air intake, '93 Cobra MAF, Mac 70mm throttle body & spacer, Explorer intakes, Mac unequal headers & offroad pipe, Magnaflow catback, Walbro 110lph fuel pump, Jet adjustable FPR, MSD Blaster coil, Accel 8mm wires, FRPP aluminum quadrant, UPR firewall adjuster, stock cable, Granatelli upper control arms.
Waiting to go on: Granatelli lower control arms, and GT40 Iron heads!
1.6 & 1.7 Roller Rocker differences? 
