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Old 08-14-2013, 01:25 PM   #1
SVTSINR
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Default SBF blower cam to turbo

I have this custom grind from Comp that I ran with a SBF 331 YSI, Canfield heads and a C4. I'm changing power adders from the YSI to a T76 and thought about switching out cams. I keep looking at the cam specs and can't find anything wrong except for the large durations. I'm guessing it will act lazy out of the whole but with a .96 exhaust housing it might make up for it. I like the intake CL at 110, LS 114 and overlap is tight at 23 deg. Car is probably 3500lbs with all the turbo piping, intercooler and my fat ass.

Any thoughts?

Grind # FW 3657R /3661R HR114.0
DURATION @ .050 INTAKE 248 ROCKER ARM RATIO
VALVE ADJ INTAKE .000 DURATION @ .050 EXHAUST 254 INTAKE 1.60
VALVE ADJ EXHAUST .000 LOBE LIFT INTAKE .3510 EXHAUST 1.60
VALVE LIFT INTAKE .561 LOBE LIFT EXHAUST .3510
VALVE LIFT EXHAUST .561 LOBE SEPARATION 114.0
DURATION .006 INTAKE C/L 110.0
TAPPET LIFT INTAKE 301 CAM ADVANCE 0
TAPPET LIFT EXHAUST 307 HYDRAULIC Y
VALVE TIMING .050 OVERHEAD CAM N
VALVE OPEN INTAKE 14 JOURNAL DIAMETER STD 2.036
VALVE OPEN EXHAUST 65 RECOMMENDED VALVE SPRINGS
VALVE CLOSED INTAKE 54 DEPARTMENT P
VALVE CLOSED EXHAUST 9 SPC INSTR FOR CUSTOMER
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Old 08-14-2013, 02:25 PM   #2
TurboII
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Default Re: SBF blower cam to turbo

I wouldn't run a real steep rear gear, good spooling converter like the PTC 9.5" and I would run it, personally. The duration doesn't bother me, I like turning fairly high rpm. Less chance of detonation with higher rpm over guys that run a steep gear and try to lug the engine. I would give it a try.
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Old 08-14-2013, 03:48 PM   #3
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Default Re: SBF blower cam to turbo

I run a 3.55 gear with 27" tall tire and 9.5 PTC converter. I would like to run 150 mph so that should spin roughly in the 7500 range with 10% converter slip.
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Old 08-14-2013, 06:04 PM   #4
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Default Re: SBF blower cam to turbo

Interesting , pte told me I could use my blower cam but I had a turbo grind made. Post up with our results later.
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