I have a few questions about installing Viper Rocker arms. 95 rocker arms are 1.7s right? Do they fit without moding the studs. Also in the Hanes manual it talks about turning the crank to the number 8 on the crankshaft pully and adjusting the valves. In old days we always went to TDC for each cylinder to adjust the valves. Did I miss reading something?

 

If you are talking about installing the 1995 V10 Viper stamped steel rocker arms onto 1995 5.2/5.9 V8 studs you need to re-measure and re-think.

The V10 Viper stamped steel rocker arm wil bolt up to the stud pivot but the distance from stud center to center of valve stem is different between the V10 and V8.

You will actually end up with an incorrect installation compared

Your present Magnum V8 rocker arms,
which are nominally 1.60 ratio
but nearly always measure more on the engine
when you set up a dial micrometer and measure
valve stem depression versus pushrod raise.

In addition to being the wrong ratio
the Viper V10 stamped steel rocker arm will 'wipe' across the valve stem end wrong,
meaning it won't push down on the center like it should.

Ex-AMC engineers brought into Chrysler's engineering dept when AMC/Jeep was purchased
designed these V8 Magnum rocker arms just prior to 1992
and they made them very similar in geometry to the Chevy small block stamped steel rockers
so that Chrysler could buy parts from Chevy suppliers at low price/high parts volume rates.

If you are looking for cheap replacement rockers
Chevy aftermarket rockers will work if the stud diameter is changed
or a special adapter 5/16 to 3/8 stud is purchased.

 

Thanks. thought I read somwhere it was an easy mod. and give better performance. I am sure it would not be the same as rollers but give you some boost.

 

Ok guys sorry to dig up such an old thread but I have been reading about putting viper rockers on my 5.2 just till I put a cam in I don't want to spend 300 on HS and have to take them out when I put the cam in. I see were some say the distance from stud center to center of valve stem is different is this true will it make excessive wear?

 

Wow, I haven't seen anyone ask about these in a long time. I suppose we were due.

You cannot use them. It is a recipe for disaster.

The rocker arm geometry is not correct. It will not keep the push rod in the correct alignment, and you risk the tip of the arm "falling off" the valve stem.

There's a reason nobody talks about using viper rocker arms anymore. It's not wise to do so.

 

I had never seen this befor.
Someone is trying to sell me a set

 

Don't do it. Even if they tell you they ran them for years with no problems.

 

so HS rockers are the ones I should get right.

 

You can get any aftermarket rocker arm you want, so long as it was designed for your vehicle. HS work well but there are others.

 

What is the cheapest 1.7s I can buy? I know the mopar ones are more than HS