I picked up I believe a 400 cubic inch engine because of the harmonic balancer design. I have the serial numbers VO529FLC from the passenger side front. But it's installed in a 98 S10 truck and I can't get to the casting numbers on the back at this time. My problem is the FLC suffix code, I can come up with TLC suffix for 400 cubic inch 175 horse. I am sure it's FLC. Any help would be appreciated. Could this have been for another GM install?