trans_am7935

iTrader: (15)

so i am about to order some PRC 5.3 stage 2.5 heads and i am using them with the LSR cam 227/235 .614/.621 113lsa and stock rockers. i read that using bronze valve guides with stock rockers (and over .550 lift) will wear the bronze out pre-maturely and cause the motor to burn oil. is this true?

also what guides do the PRC 5.3 heads use?

which are better, and do i need to have new rockers with this high lift of a cam?

i was gonna ask TSP about them before i bought them but they are closed right now and need to know if i need better heads, different guides or new rockers.

on a side note...if i need to upgrade the stock rockers in any way (ie turision upgrade) then i will go with yella terra ultra lights. i am starting to lean torward the roller rockers cause i am worried about the guide wear and noise level with such high lift, high spring preasures (500lb @ 1.140) and fast ramp rate. let me know.

thanks in advance

trans_am7935

iTrader: (15)

nobody here knows anything about the difference of the two?