Newly Assembled LT1 w/Solid Roller cam
Thread Starter
Joined: Feb 2003
Posts: 2,145
Likes: 133
From: East Chatham, New York
Newly Assembled LT1 w/Solid Roller cam FINALLY got the motor put together. I took a flight to Houston from home (upstate New York), met with some of my old Houston Fbuds (Gawd these guys are great!) and, with wrenches in hand, assembled the long block. The cam is a used Cam Motions (242/252 .606/.606 108.9 LSA). These figures are the result of the CC Pro Mag 1.6 ratio 7/16" studs. I set the cold lash at .020 and started her up. Lovely mechanical song. It's been awhile since I've heard the symphony of 16 solid lifters chatting away. 
After breaking it in around Houston, I changed the oil/filter and drove her back to Upstate New York. She never missed a beat. After spending the night in Little Rock, Ar, I set the lash (Hot) to .010. It idled a bit better, more evenly and more quietly. I was able to get a freeway on ramp kill(another LT1 4th Gen Z28) in Nashville with the new motor. It has quite a bit of cam surge below 2,500 but if you step on it in 3rd (don't bother with 1st or 2nd, it just spins the street tires) it pulls nicely to about 3,500 and then gets serious and really starts breathing. With the 4.10s in back and the T56 in 6th gear, most of the long trip was at 74mph with the cruise control on, showing 2,100 or so on the factory tach. The car sounds strong, noisy (with the solid lifters) and doesn't like stumbling around in town at low RPM's. I think I'll keep this cam/valve train in through this summers racing (New Lebanon's track), then swap in a milder hydraulic roller (an old favorite, CC 224/236 is likely).
I'm going to take the car over to Albany to a chassis dyno and see what she'll pull. I'll post the results after that.
After breaking it in around Houston, I changed the oil/filter and drove her back to Upstate New York. She never missed a beat. After spending the night in Little Rock, Ar, I set the lash (Hot) to .010. It idled a bit better, more evenly and more quietly. I was able to get a freeway on ramp kill(another LT1 4th Gen Z28) in Nashville with the new motor. It has quite a bit of cam surge below 2,500 but if you step on it in 3rd (don't bother with 1st or 2nd, it just spins the street tires) it pulls nicely to about 3,500 and then gets serious and really starts breathing. With the 4.10s in back and the T56 in 6th gear, most of the long trip was at 74mph with the cruise control on, showing 2,100 or so on the factory tach. The car sounds strong, noisy (with the solid lifters) and doesn't like stumbling around in town at low RPM's. I think I'll keep this cam/valve train in through this summers racing (New Lebanon's track), then swap in a milder hydraulic roller (an old favorite, CC 224/236 is likely).I'm going to take the car over to Albany to a chassis dyno and see what she'll pull. I'll post the results after that.
