Newly designed LS hydraulic roller lifters compatible w/1998 truck Gen 1 5.7L Vortec
February 8th, 2011, 1:05 PM
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Newly designed LS hydraulic roller lifters compatible w/1998 truck Gen 1 5.7L Vortec
Replacing lifters in 1998 k1500 5.7L truck and having trouble figuring out which ones will work.
From the GMPP catalog, the lifter kit listed for the LS engine is 12499225, which includes 16 lifters with # 17122490. For the 98 truck it gives a kit # 12371042, which includes 16 lifters with # 17120735 plus dog bone guides and hold down spider which I already have and do not need new ones. The lifter kit for the LS engine is less expensive and would like to use.
But several treads and different sites have different opinions on using the LS lifter on a Gen 1 Vortec engine. Some even say I would need to change out pushrods to account for the .050" difference in cup location and then some say the LS7 lifters are a direct replacement for all GM lifters from 1987 to present as long as the engine was using a hydraulic roller cam.
Can anybody confirm that I can use the GMPP lifters listed for LS engine on my 1998.
Another way of putting it, are the hydraulic roller lifters used for the LS1 or LS6 the same as roller lifters used in a GEN 1 Vortec engine?
When you look up Comp Cams, Melling, Seal Power they only list one lifter for all hydraulic roller style motors.
Other parts numbers, HL123, HL124, HT2148, 850-16, J-2079
From the GMPP catalog, the lifter kit listed for the LS engine is 12499225, which includes 16 lifters with # 17122490. For the 98 truck it gives a kit # 12371042, which includes 16 lifters with # 17120735 plus dog bone guides and hold down spider which I already have and do not need new ones. The lifter kit for the LS engine is less expensive and would like to use.
But several treads and different sites have different opinions on using the LS lifter on a Gen 1 Vortec engine. Some even say I would need to change out pushrods to account for the .050" difference in cup location and then some say the LS7 lifters are a direct replacement for all GM lifters from 1987 to present as long as the engine was using a hydraulic roller cam.
Can anybody confirm that I can use the GMPP lifters listed for LS engine on my 1998.
Another way of putting it, are the hydraulic roller lifters used for the LS1 or LS6 the same as roller lifters used in a GEN 1 Vortec engine?
When you look up Comp Cams, Melling, Seal Power they only list one lifter for all hydraulic roller style motors.
Other parts numbers, HL123, HL124, HT2148, 850-16, J-2079
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