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Tyler Townsley · 09-18-2010

Couple of things that need mentioning here. 1. You can use 90-92 lifters in all years without modifications HOWEVER you cannot use 93-95 lifters in 90-92 without cutting the valve stem slightly. The later lifters are taller than the earlier lifters. So if you do a valve job on an early engine and replace the lifters with the later design you have just created a nightmare for yourself. 2. When you do the leakdown test time will effect the compression and leakdown. JL long ago told me a leakdown test on a LT-5 is a crapshoot because you can get one set of figures with an engine with lifters that have bled down and another set for one with pumped up lifters so they never depended on leakdown info on LT-5s.

Tyler

09-18-2010	#36
Tyler Townsley Join Date: May 2005 Location: Nichols, FL Posts: 611	Re: An enigma insues... Couple of things that need mentioning here. 1. You can use 90-92 lifters in all years without modifications HOWEVER you cannot use 93-95 lifters in 90-92 without cutting the valve stem slightly. The later lifters are taller than the earlier lifters. So if you do a valve job on an early engine and replace the lifters with the later design you have just created a nightmare for yourself. 2. When you do the leakdown test time will effect the compression and leakdown. JL long ago told me a leakdown test on a LT-5 is a crapshoot because you can get one set of figures with an engine with lifters that have bled down and another set for one with pumped up lifters so they never depended on leakdown info on LT-5s. Tyler