Help ??? What is this

geno5.0 · 07-28-2002, 04:28 PM

Hey guy's I need a little help!! I bought my car awhile ago used and it
had some mods done to it!! All the bolt ons and heads and so on. I decided to take off my upper intake Manfold and try to find out what heads it has, when I pulled off the valve covers what do I see Roller rockers

But I dont know what size they are I attached a Pic of them can anyone tell me what size they are there is a F-72 stamped into them.?
Now for the heads they have a -y302 on them and a bunch of other #s does this mean they are the Y heads from ford they also say SVO on them!?

If they are the Y heads how good are they? are they good or just crap?

I am trying to figure out my combo any thoughts will help!!.

geno5.0 · 07-28-2002, 04:30 PM

Sorry here is the pic

cyberstang5.0 · 07-29-2002, 07:25 AM

Well, the RR's might be 1.72 ratio. Mine are 1.6's and they have 1.6 stamped on them. They look like FMS but I could be wrong.

Don't take me as a final answer, I'm just giving you my best guess.

StangFlyer · 07-29-2002, 11:52 AM

Looks to me as you have 1.72 rockers. To know for sure exactly what Ford Racing head you have, call the Ford Racing technical hotline (586-468-1356). Give them the part number on the head and they should be able to look it up to tell you what it is for sure.

magicmerll · 07-29-2002, 12:17 PM

Sounds like 1.72 to me...

07-28-2002, 04:28 PM	#1
geno5.0 Registered Member Join Date: Feb 2002 Location: Omaha Posts: 124	Help ??? What is this Hey guy's I need a little help!! I bought my car awhile ago used and it had some mods done to it!! All the bolt ons and heads and so on. I decided to take off my upper intake Manfold and try to find out what heads it has, when I pulled off the valve covers what do I see Roller rockers But I dont know what size they are I attached a Pic of them can anyone tell me what size they are there is a F-72 stamped into them.? Now for the heads they have a -y302 on them and a bunch of other #s does this mean they are the Y heads from ford they also say SVO on them!? If they are the Y heads how good are they? are they good or just crap? I am trying to figure out my combo any thoughts will help!!. __________________ Mods:Svo Alu Y Heads,1.72roller rockers,Cam,Cobra Upper&lower,bbkEqu hedders,Offroad H,FlowmasterMuffs,BBk70mm Tb,and73mmMAF,UnderDrive Pulleys,24lb Svo Inj,Kirban AFPR,190lph Walbro,Griffin Alu Rad,Crane Coil,Batt Relocated to trunk,K/Ncone,smog pump removed,Built Aod,DSSL,3.73gears,Alu flywheel,2800stall,NOS 5115 100shot, Iknow I forgot something Best on motor13.66@102.55 2.14 60' Best on spray13.20@108.98(2.69 60') I Bet mid to low 12 if I can Hook! All runs on street tires Last edited by geno5.0; 07-29-2002 at 09:28 AM..

07-29-2002, 11:52 AM	#4
StangFlyer Founder Join Date: Jun 1995 Location: Michigan Posts: 19,326	Looks to me as you have 1.72 rockers. To know for sure exactly what Ford Racing head you have, call the Ford Racing technical hotline (586-468-1356). Give them the part number on the head and they should be able to look it up to tell you what it is for sure. __________________ StangFlyer 1991 Mustang GT - Supercharged 377 Stroker 2000 Ford Lightning - Project Lightning Hauler Media Center Gallery - View my member photos

07-29-2002, 12:17 PM	#5
magicmerll Registered Member Join Date: May 2002 Location: St. Louis, MO Posts: 19	Sounds like 1.72 to me... __________________ Ever notice the people that know the best way to raise kids are the people that don't have any?

07-29-2002, 07:25 AM	#3
cyberstang5.0 347ci of HORSE POWER!!! Join Date: Jul 2001 Location: Houston, TX Posts: 1,416	Well, the RR's might be 1.72 ratio. Mine are 1.6's and they have 1.6 stamped on them. They look like FMS but I could be wrong. Don't take me as a final answer, I'm just giving you my best guess.