How much lift at lifter?

5literJeff · March 14th, 2007, 07:22 PM

While I got the heads off I figured I would check the lift using a dial indicator on the lifters to see what size cam is in the motor.

I bought this motor used and it seems to have a small cam in it due to the idle and powerband. Its a 306 and the pistons have valve reliefs, an 86 roller block. The heads were e6's but it doesnt matter cause im changing those.

So what kind of lift should I be looking for on an 86 roller motor. I read somewhere that .444 lift was stock cam but thats after the 1.6 rockers. So I was thinking around .275 lift at the lifter? Does that sound right? Thanks in advance for any help.

95opal · March 14th, 2007, 08:41 PM

You shouldnt be looking for anything accept what reading you get at .050
lift.

1slo5.0 · March 15th, 2007, 09:00 PM

Divide total lift by rocker ratio and that will give you lobe lift.

.444/1.6 = .2775

March 14th, 2007, 07:22 PM	#1
5literJeff Regular Join Date: Jul 2006 Location: Blue Ridge, South Carolina Posts: 260 iTrader: 0 reviews	How much lift at lifter? While I got the heads off I figured I would check the lift using a dial indicator on the lifters to see what size cam is in the motor. I bought this motor used and it seems to have a small cam in it due to the idle and powerband. Its a 306 and the pistons have valve reliefs, an 86 roller block. The heads were e6's but it doesnt matter cause im changing those. So what kind of lift should I be looking for on an 86 roller motor. I read somewhere that .444 lift was stock cam but thats after the 1.6 rockers. So I was thinking around .275 lift at the lifter? Does that sound right? Thanks in advance for any help.

March 14th, 2007, 08:41 PM	#2
95opal Hardcore Enthusiast 95 opalfrost gt Join Date: Nov 2006 Location: Connecticut Posts: 1,516 iTrader: 0 reviews	You shouldnt be looking for anything accept what reading you get at .050 lift. __________________ 5.0 magazines 94-04 performance mustangs feature car! Fall 2010

March 15th, 2007, 09:00 PM	#3
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Divide total lift by rocker ratio and that will give you lobe lift. .444/1.6 = .2775 __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

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