1.6 or 1.7 Roller Rockers?????

90'5.0 Conv · 11-20-2001, 08:21 PM

Could someone please tell me the difference between the 1.6's and 1.7's. I mean with a stock motor and valve covers and all, would you have a problem using the higher or what. Basically what I am asking is, what should I get for a stock motor?

fordgasm · 11-20-2001, 08:32 PM

With a factory cam you will want to go with the 1.7's

Use the 1.6's with an aftermarket cam with the proper lift to match your combination.

exgmguy · 11-21-2001, 05:46 PM

1.6 or 1.7. That is the ratio that lobe lift of the cam is multiplied.

If you add 1.7's, you get a little more valve lift over the stock size of 1.6. As stated earlier, 1.7's are good for a stock cam, but if you are buying the cam and rockers together, get the 1.6's and the right cam for your combo.

gtsr515 · 11-21-2001, 10:40 PM

the difference between 1.6 and 1.7 is exactly .30 thousands.

Go with 1.6's so you can build on them.

11-20-2001, 08:21 PM	#1
90'5.0 Conv Long time member in and out Join Date: Jul 2001 Location: Albany, Ga Posts: 343	1.6 or 1.7 Roller Rockers????? Could someone please tell me the difference between the 1.6's and 1.7's. I mean with a stock motor and valve covers and all, would you have a problem using the higher or what. Basically what I am asking is, what should I get for a stock motor? __________________ 90' Mustang GT Convertible- C4 w/ manual body 4.10's soon to be 3.27's 2 Ch Flowmasters 1/8th ET 9.04

11-20-2001, 08:32 PM	#2
fordgasm Registered Member Join Date: Jan 1999 Location: Clayton, North Carolina, USA Posts: 803	With a factory cam you will want to go with the 1.7's Use the 1.6's with an aftermarket cam with the proper lift to match your combination. __________________ fordgasm CLICK HERE to see my 87 GT

11-21-2001, 05:46 PM	#3
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	1.6 or 1.7. That is the ratio that lobe lift of the cam is multiplied. If you add 1.7's, you get a little more valve lift over the stock size of 1.6. As stated earlier, 1.7's are good for a stock cam, but if you are buying the cam and rockers together, get the 1.6's and the right cam for your combo. __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.

11-21-2001, 10:40 PM	#4
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	the difference between 1.6 and 1.7 is exactly .30 thousands. Go with 1.6's so you can build on them. __________________ Remember...2nd place is 1st place for losers!

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