LT1-LT4 Modifications - solid lift guys step in.
01-23-2007, 11:08 AM
i'm wanting to know what lifters you guys use. part numbers or links to buying them would be great. also looking at the rockers/stud gurdles for part numbers or links. thanks for the help.
01-23-2007, 12:23 PM
The part number that I am useing is RL971. http://www.pbmperformance.com/downloads/PBMcatalog2005_34_70.pdf
01-23-2007, 01:49 PM
it says those are for the ls1....just making sure that is what you're running in an lt1??
01-23-2007, 01:57 PM
LT1/LS1 share lifters.
01-23-2007, 02:00 PM
did not know that.....guess that's a handy piece of advice to tuck away
01-23-2007, 08:15 PM
Comp Cams Endurex part number 888-16
01-24-2007, 11:04 AM
I am running Crane 10510-16 For the solid rollers description (Long travel design for use with standard GM alignment bars in engines originally equipped with hydraulic roller lifters.) I used these because there is no reason IMO to use a vertical bar or add any additional parts to the valvetrain.
I am running the Gold Race 1.6 roller rockers with 7/16 studs. I did all the porting on the heads for the upgraded Manely Valve at 2.02 and 1.60 stainless with the valves having the additional +.100 in length to keep from having issues with clerance with the rockers. I am also running trend push rods. http://www.trendperform.com/ I ended up with pushrods that were .140 longer than the factory to get the roller alignment correct on the valve stem. Along with that I am running K-motion springs K-800 I believe these are good for .700 coil bind. There was also extra machine work changing the studs from 3/8 to 7/16 and pocket milling the spring pockets for the spring cups that provided positive alignment for instaled spring height.
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