5.3 Gen Iii Ls6 Z06 Camshaft Springs F Pan

[zgeezer]

If you are swapping an F body oil pan onto your truck GENIII block then be aware that you must modify the truck's windage tray to allow the oil pickup tube to sit squarely into the oil pump. Failure to do this will eventually allow the oil pump to suck air... not a good thing.

 

When you pull the truck oil pan and oil pickup tube, note that the truck pickup tube runs down the passenger side of the engine and then crosses over to the engine centerline before it drops down into the sump. It is supported by two of the windage tray studs: one on the passenger side and one on the driver's side. The side of the truck windage tray is "windowed" next to each of the pickup tube mounting studs. This allows the pickup tube mounting supports to be bolted FLAT to the windage tray. The F body oil pickup tube, by comparison, is supported only at the oil pump and by one windage tray stud on the driver's side. It is not the same stud that mounts the truck's second support. Be sure to "window" the windage tray along side the "new" stud that will hold the F body oil pick up tube. If this is not carefully done, the oil pickup tube will be "cocked" in the pump and the oil ring will not seal the pickup tube.

 

Sorry for the lack of pictures, but once you have the truck pan off, you will see the issue immediately. I used a torch to cut out a "window" the size of a four bit piece.

 

I found these specifications for LS1 camshafts that might be of help to someone trying to sort out some of Chevy's stock cams.

 

1998 - 2000 Fbody

202/210 int/exh @ 0.05" duration

0.496" / 0.496" int/exh lift

116 LSA

 

2001 - 2002 Fbody

197/207 int/exh @ 0.05" duration

0.467" / 0.479" int/exh lift

116 LSA

 

2001 LS6 cam

207/217 int/exh @ 0.05" duration

0.525" / 0.525" int/exh lift

116 LSA

 

2002+ LS6 cam

204/218 int/exh @ 0.05" duration

0.551" / 0.547" int/exh lift

117 LSA

 

GMPP Hot Cam

218/227 int/exh @ 0.05" duration

0.525" / 0.525" int/exh lift

112 LSA

 

GMPP ASA Cam

226/236 int/exh @ 0.05" duration

0.525" / 0.525" int/exh lift

110 LSA

 

6.0 LQ9

207/196 int/exh @ 0.05" duration

0.479" / 0.467" int/exh lift

116 LSA

 

5.3 LM7

190/191 int/exh @ 0.05" duration

0.466" / 0.457" int/exh lift

114 LSA

 

What I found surprising is that the truck cams are ground on 116 or 114 lsa, but the two z06 cams are on 116 or 117 LSA. I would have thought it would have been the other away around.

 

I have purchased a pull out camshaft for a GEN III engine that has the following numbers engraved on the back side: 5308 S-09 1236. I believe these are Chevrolet numbers and identify one or the other LS6 cams. Can anyone confirm what cam I really hav?. It was sold to me as a 2001 LS6. Yep, I paid $20 for a pig in a poke and now I'd like to know if I got the pig or the poke.

 

Thanks folks. Pictures of another 5.3 on the road coming to you sometime before the end of the decade.

 

g