Dont use 1.7 rockers with stock heads?

[88quickGTVert]

Originally Posted by Coupe5oh

This is a quote off the MAC website:

"To enhance the total package, high quality roller rockers (direct bolt on) with a 1.6 to 1 ratio need to be installed. The use of high quality roller rockers will help equalize cam performance from cylinder to cylinder. Stock rockers are stamped and their ratios are inconsistent, be sure to use only high quality roller rockers. Caution: with stock rate springs and heads, do not use more than 1.6 to 1 rockers. Stock springs are not designed for more valve action."

Glad i didnt already buy mine, so i guess im getting 1.6's, but how hard is it to replace the stock springs with newer ones, if i decide to just do the springs? thnx

Speaking from experience, I had 1.7's on my 89 LX, after 2 1/2 years of driving/street racing, I needed the stock heads (springs worn and valve job) done over. Some of the rockers we're also loosened up even after being torqued to 20 ft lbs. At that time engine had about 60 thousand miles. Get the upgraded springs when using 1.7.
The heads are the weak point of the 5.0 engine.