tsp.

very good customer service.

 

tsp.

very good customer service.

 

Thunder racing grind thier own cams? TSP are all ground by comp correct?

 

comp grinds thunders' cams also. they have their own proprietary *sp? lobes.

 

TR's lobes were developed before the xer's came along. the TR is in between the xe and xer. Like I said, I'd go with whichever is cheaper. I'd honestly doubt you could tell a difference between the two, and obviously people have very good results with both cams.

 

good deal, thanks for the info guys. I figured that there wasnt a difference to be seen for the most part. I'll have to decide pretty quick here I guess i'll be ordering it within a couple of weeks. If I went with the TR cam would the ls6 springs hold up as well as the 918's?

 

whats the ICL on the TR220. TSP has a 112 +4 degrees of advance ground in.

 

I wouldnt go with LS6 springs. Way too risky imo.

The PAC springs are $122 from SDPC and are a much better choice than the LS6's. $70 is hardly anything when you consider the price you'll be paying if that ls6 spring breaks and a valve drops.

 

I believe the TR has 4 degree's of advance ground in as well

 

I would go with TSP. It's a proven cams on the 5.3s.