[BossHogg69]

Originally Posted by truckster

Mike is no longer at Cloyes. I spoke with Cody, and this is what he said:

If it is a factory style roller, and you are using the factory thrust plate, then you can use the 9-1145 double roller set. If it is what they call a retrofit roller cam, it will have the old style cam nose and will require the old style timing set 9-1100.

Now I'm more confused. The 9-1146 says it's a true roller for SBC, just like the 9-1145 does. I'm not building a race engine, so is there a good reason to spend $25 more on the timing set?

9-1146 is for the raised cam aftermarket blocks, not a factory SBC. I screwed up - that was a typo on my part and I apologize. 9-1145/3145 is for the factory roller 85-up like the L98 TPI motors from the late 80's/early 90's. If you're not using the L31's plastic timing cover then the 9-1145 will work - if you do use the plastic timing cover, that's the 9-1157/3157 - it is specifically for the L31. I'm pretty sure the RamJet cam you said you're using has a stepped nose. Sorry for the confusing typo.