Go Back   Ford Mustang Forums > Mustang > 5.0 Mustang > 5.0L Tech

Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.

You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.

5.0 Mustangs Tech Forum

5.0L Talk | 5.0L Tech | 94-95 Tech | 1979-1993   1994   1995   Upload Pictures | Timeslips | Power Adders | Mustang Tech 


Reply   Post New Thread
Unread 09-21-2004   #1 (permalink)
grumpy44 is offline Rookie


Joined: Apr 2004
Posts: 40 Threads: 27
Stonewall La.
grumpy44 is on a distinguished road
Default 1.6 & 1.7 Roller Rocker differences?

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.
grumpy44 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Unread 09-22-2004   #2 (permalink)
meangreen92 is offline Top Dog

5.0L Member


Joined: May 2004
Posts: 3,476 Threads: 113
 meangreen92's Country Flag  View meangreen92's 14 photos
Southern   Ohio
meangreen92 is on a distinguished road
Default

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.
__________________
'88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. Mac shorty headers and H-pipe, Magnaflow catback.
meangreen92 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 09-22-2004   #3 (permalink)
One_Quik_Pony is offline Made Member

5.0L Member


Joined: Dec 2002
Posts: 337 Threads: 14
 One_Quik_Pony's Country Flag  View One_Quik_Pony's 9 photos
Phoenix   Arizona
One_Quik_Pony is on a distinguished road
Default

Take the lift of your cam, divide that by 1.6, and multiply the result by 1.7.

Yeah, and get some clay!
__________________
After building Porsches, I now realize how elementary American cars really are!
One_Quik_Pony is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 09-22-2004   #4 (permalink)
FoxChassis is offline MACH I Member

5.0L Member


Joined: Jul 2003
Posts: 2,935 Threads: 12
 FoxChassis's Country Flag
NOYB
FoxChassis is on a distinguished road
Default

.500" lift is valve lift (w/ 1.6:1 rocker arm ratio)

.500 / 1.6 = .3125

.3125" is lobe lift (regardless of rocker arm ratio)

.3125 x 1.7 = .53125

.53125" is valve lift (w/ 1.7:1 rocker arm ratio)
__________________
Wanted (Dead or Alive): VINs, Vehicle Certification Labels, Buck Tags, Build Sheets, Window Stickers, Owner Cards, Warranty Tags, History 999 Reports, Invoices, Axle Tags
FoxChassis is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 09-23-2004   #5 (permalink)
meangreen92 is offline Top Dog

5.0L Member


Joined: May 2004
Posts: 3,476 Threads: 113
 meangreen92's Country Flag  View meangreen92's 14 photos
Southern   Ohio
meangreen92 is on a distinguished road
Default

Hey, I learned something!
__________________
'88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. Mac shorty headers and H-pipe, Magnaflow catback.
meangreen92 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 09-23-2004   #6 (permalink)
reddevil95 is offline Made Member

5.0L Member


Joined: Jul 2003
Posts: 423 Threads: 41
 reddevil95's Country Flag
Indianapolis   Indiana
reddevil95 is on a distinguished road
Send a message via AIM to reddevil95
Default

whats the clay for btw?
__________________
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
reddevil95 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 09-23-2004   #7 (permalink)
meangreen92 is offline Top Dog

5.0L Member


Joined: May 2004
Posts: 3,476 Threads: 113
 meangreen92's Country Flag  View meangreen92's 14 photos
Southern   Ohio
meangreen92 is on a distinguished road
Default

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.
__________________
'88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. Mac shorty headers and H-pipe, Magnaflow catback.
meangreen92 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 07-20-2010   #8 (permalink)
lilorange79 is offline Made Member

5.0L Member


Joined: Dec 2008
Posts: 276 Threads: 58
 lilorange79's Country Flag  View lilorange79's 74 photos
NW   Oregon
lilorange79 is on a distinguished road
Default

I run 1.7 Crane non adjustable roller rockers on gtX heads with a .512 cam. I like it except for the fact push rod length has to be adjusted not the rockers. PITA to setup. The extra lift helps with the smaller valve size in my case.
__________________
1979 Project car
lilorange79 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 07-21-2010   #9 (permalink)
spdjnky_42 is offline SHELBY GT 500 Member

5.0L Member


Joined: Nov 2007
Posts: 13,640 Threads: 204
 spdjnky_42's Country Flag  View spdjnky_42's 21 photos
St.Louis   Missouri
spdjnky_42 is on a distinguished road
Send a message via Yahoo to spdjnky_42
Default

Do the clay! put a small amount inbetween the head and piston torque everything down to spec (put some oil on the valves so the clay doesnt stick) pull back apart and check for clearance.
spdjnky_42 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 07-21-2010   #10 (permalink)
need4spd90 is offline SHELBY GT 350 Member

5.0L Member


Joined: Apr 2009
Posts: 6,366 Threads: 45
 need4spd90's Country Flag
Mountain Top   Pennsylvania
need4spd90 is on a distinguished road
Default

most times PTV clearance has nothing to do with peak lift
__________________
1987 Notchback - N/A stock 302, TFS heads, Holley Systemax, FTI cam, Astro A5
Best so far: 10.92 @ 123mph with a 1.49 60ft
need4spd90 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 08-05-2012   #11 (permalink)
geeman is offline Rookie


Joined: Aug 2012
Posts: 4 Threads: 0
 geeman's Country Flag  View geeman's 2 photos
mississauga   Ontario
geeman is on a distinguished road
Default can any one help me with this

i have an 89 coupe lx with 47000 orig mile and iam looking to get the cam sound out of the stock cam with out opening the motor up i was told that all i have to do is put 1.7 roller rocker on it and it will give me that sound will it work and do i have to worry about valve to piston clearents so if any one cane help that would be great thanks the geeman.......
geeman is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 08-05-2012   #12 (permalink)
cindys_sn95 is offline Banned


Joined: Nov 2007
Posts: 7,991 Threads: 25
 cindys_sn95's Country Flag  View cindys_sn95's 7 photos
Gulfport   Mississippi
cindys_sn95 is on a distinguished road
Default

won't do it.
cindys_sn95 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 08-06-2012   #13 (permalink)
Happytrack 44 is offline PONY Member


Joined: May 2011
Posts: 274 Threads: 9
 Happytrack 44's Country Flag  View Happytrack 44's 8 photos
Mcleansville   North Carolina
Happytrack 44 is on a distinguished road
Default

I put 1.7 rockers in a 300 six, as it is a cheap power adder for that engine.
The down side is the power band moved up the tack and it lacks smooth cruise at low rpm.
__________________
89 LX 5.0 5spd; Original paint, presentable. pro50 with setback Triax handle, retro 1965 knob.Cleaned and re dyed carpet, ordered Mach 1 upholstery in original scarlet and grey to match interior. Fresh gaskets on top, silicon hoses, plugs and wires. K&N drop in, snorklechtomy, freshened the rear end with 3:27 gears bearings and seals.
Happytrack 44 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Reply   Post New Thread



Thread Tools



Mustang Photos
Mustang Links    Top Sites    RSS    Link To Us    Add to Favorites    Archive    Terms of Use    Site Rules    Privacy    Contact    Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2011 All Auto Enthusiasts Network

Search Engine Friendly URLs by vBSEO 3.5.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172