LT4 Rockers on a 90 TBI?

SnakeEyeSS · June 28, 2002

I have a 1990 Silverado 350 TBI, am am going to install new rockers on my stock heads, until I get a set of Fast Burn Heads to switch them to. Will the LT4 rockers(Jeg's part number 270-10750-16 if you want to look) fit on the stock heads on my 350 TBI? The LT4 is centerbolt, like the TBI is.............

CMNTMXR81 · June 28, 2002

I believe the LT4 rockers are 1.7 ratio rockers, so that extra length may be a conern if you stock ones are 1.4 or 1.5 ratio. The LT4 rockers I believe are also self contained roller bearing rockers, not sure what was on a 90TBI set, so they may not mount and bolt down properly.

If you are just wanting that additional .2 of ratio, you may just be best off with a direct replacement for your motor that is a 1.6 - 1.7 ratio than going LT4.