SNS Stage 3 or Polluter V2?
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SNS Stage 3 or Polluter V2? Guys, I'm torn on what cam to run. My car is not a daily, and mostly sees track time. The engine is stock except for Kooks 1 7/8 headers and duals, and an slap cold air kit. I plan on running an ls6 intake along with the proper injectors and fuel pump when I do the cam swap. I may try to get some 243s if the budget allows. Of course new lifters, chain, and oil pump.
My only concerns are ptv clearance and revving the stock bottom end too high too often with the polluter. I'll take any advice, but please don't recommend other cams as these are the two I've settled on.
Current mods for the car:
S60 with 4.10s
Performabuilt lvl 2
FTI single disk lockup 4K stall
Vikings on all wheels
Will wood brakes on all wheels
Dragline skinnies and et streets
Full BMR suspension except k member including anti roll bar
Car dynoed at 321/331 and runs 11.90s at 110 with a 1.58 60'.
My only concerns are ptv clearance and revving the stock bottom end too high too often with the polluter. I'll take any advice, but please don't recommend other cams as these are the two I've settled on.
Current mods for the car:
S60 with 4.10s
Performabuilt lvl 2
FTI single disk lockup 4K stall
Vikings on all wheels
Will wood brakes on all wheels
Dragline skinnies and et streets
Full BMR suspension except k member including anti roll bar
Car dynoed at 321/331 and runs 11.90s at 110 with a 1.58 60'.
ptv "shouldn't" be an issue with the v2 as long as you don't mill the heads or run a thinner gasket, still not a bad idea to check it at least before final assembly. However, if my car still had the ls1 in it I would probably opt for the sns stage 3 out of those two options. But since mine will be an 11.5:1 6.2L I'll be running the v2.
The original post said stock bottom end so I based my opinion off of that. If you have a built forged bottom end and want to rev it higher then by all means run the V2. After several conversations with Martin before he left Tick, Im convinced that its going to be a damn good runner in my car.
milled 243's and a thinner gasket with a smaller cam will make up any losses to a bigger cam that is stock compression. Also will yield better low -midrange power and better driving characteristics. That being said I would go 61cc 243, .045 cometic, and a 228/232 cam. If you do not mind fly cutting or a aftermarket casting with better PTV, then go with a bigger cam.
In a street car... those pesky upper 220s cams are faster with the right combo...
The SNS2 has too early of an IVC however. The BTR Stage 2 is a 227/234 .614"/.576" 113+2 cam which would be better. I have the supercharged variant of that in my car. The 227 intake lobe with a 110-111 IVC is excellent for all around power and drivability.
Although, the BTR Stage 3 is also a good cam. Still smaller than an SNS3... 231/242 .617"/.592" 112+2. I think that's the edge of what I would do.
I had a 234/242 111 Cam... and it's tiresome in any kind of traffic. Open back road or track it's great.
The SNS2 has too early of an IVC however. The BTR Stage 2 is a 227/234 .614"/.576" 113+2 cam which would be better. I have the supercharged variant of that in my car. The 227 intake lobe with a 110-111 IVC is excellent for all around power and drivability.
Although, the BTR Stage 3 is also a good cam. Still smaller than an SNS3... 231/242 .617"/.592" 112+2. I think that's the edge of what I would do.
I had a 234/242 111 Cam... and it's tiresome in any kind of traffic. Open back road or track it's great.
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