Cam choice
Thread Starter
Instructor
Joined: May 2009
Posts: 105
Likes: 3
From: Kimberly WI
Cam choice
With my stock 95 LT1, except for magnaflow mufflers, I plan on changing out the rockers (1.6 narrow), springs (beehive), locks, retainers, and While I'm in there I'll replace the valve seals. I'm going to go with all COMP CAM parts. My plan is to set myself up for a cam change. After calling Comp Cam they recommended the cam below (258HR-12), because I'm not a cam expert, I need to ask the members here if you have ever purchased this cam and isn't it pretty close to stock. I'm not looking for a very rough idle, because its still my night and weekend car, but I"m also not that old that I can still enjoy a good sounding car. No other mods are planned. Thanks
Last edited by therbst; Sep 11, 2010 at 02:20 PM. Reason: picture
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
With my stock 95 LT1, except for magnaflow mufflers, I plan on changing out the rockers (1.6 narrow), springs (beehive), locks, retainers, and While I'm in there I'll replace the valve seals. I'm going to go with all COMP CAM parts. My plan is to set myself up for a cam change. After calling Comp Cam they recommended the cam below (258HR-12), because I'm not a cam expert, I need to ask the members here if you have ever purchased this cam and isn't it pretty close to stock. I'm not looking for a very rough idle, because its still my night and weekend car, but I"m also not that old. No other mods are planned. Thanks
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
Seems mighty mild for the money and effort involved especially if it is a 6 speed. A tuned port like more cam than that and you have a short runner manifold that wants to rev. Your call in the end but it is less than a ZZ4 cam and that is mild as well. I would think something closer to a 215 or 220 at 0.050 would make more sense if you want a little rump rump and more top end power.
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Hotcam is what GM intended to put on LT1s to create the LT4. LT4Obsesses has one in his LT4. I love the sound and the power is great.
Take a cue from GM.
Take a cue from GM.
Le Mans Master
Joined: Jun 2006
Posts: 5,642
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From: One day you're a Comet...the next day you're dust... Arkansas
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
2-teens suggested as above @.050 will help on torque and still idle smooth
auto or stick makes a diff too. You can get away with a little more with a stick, doesnt sound like you want to get into changing converters/gears anyway.
auto or stick makes a diff too. You can get away with a little more with a stick, doesnt sound like you want to get into changing converters/gears anyway.
Melting Slicks
Joined: Mar 2002
Posts: 3,108
Likes: 126
From: S.L.C. UT
I would take the advise of everybody above, The cam you are thinking about isn't much more than the stock cam. I would bump it up a little. I think anywhere in the teens would work well. The hotcam is a proven set up. But there are also more modern grinds out there. I would shoot for 214-219 intake duration and the 112 lobe sep works well for what you are doing. Cams in this range are very mild.
Melting Slicks
Joined: Mar 2008
Posts: 3,022
Likes: 3
From: Chandler Arizona
I wouldn't go through the hassle of install for the cam listed in the OP. I think you're going to get through the process and be dissapointed with the end result.
I too agree with the previous posters. The LT4 hotcam seems to be the most reasonable approach to a good (all around) cam.
I would suggest the following...
218-224 range for the intake
220-228 range on the exhaust end
114 LSA (makes for a "cleaner" combo)
.500-.520 lift on both intake/exhaust
I too agree with the previous posters. The LT4 hotcam seems to be the most reasonable approach to a good (all around) cam.
I would suggest the following...
218-224 range for the intake
220-228 range on the exhaust end
114 LSA (makes for a "cleaner" combo)
.500-.520 lift on both intake/exhaust
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