222/222 versus 226/226 cam (old was 224/236)
10-16-2005, 09:31 PM
#1
222/222 versus 226/226 cam (old was 224/236) I broke a piston in my LT1 383 T-76 yesterday. It is VERY important to purge the air from the Methanol lines before getting into boost.
Anyway, I've been running a 224/236 - 114 for some time now that was left over from the blower combo. I now have the opportunity to change it out to something more turbo-specific.
I've done extensive reading on turbo cams and decided to go single-pattern because it seems as though the freakishly high hp cars are running them. I'm also switching to Crane HR1 lobes since the Comp Extreme High Lift lobes are unstable and hard on the valve train.
I'm having a hard time deciding between 222/222 - 114 (.542/.509) and 226/226 - 114 (.552/.518).
I certainly don't want to lose power over the 224/236 cam, but a PTK LT1 car made 990 rwhp with a puny 218/218 cam. Conversely, Brent made 1180 rwhp with the F cam, which is 226/226.
Any thoughts on this?
Mike
Anyway, I've been running a 224/236 - 114 for some time now that was left over from the blower combo. I now have the opportunity to change it out to something more turbo-specific.
I've done extensive reading on turbo cams and decided to go single-pattern because it seems as though the freakishly high hp cars are running them. I'm also switching to Crane HR1 lobes since the Comp Extreme High Lift lobes are unstable and hard on the valve train.
I'm having a hard time deciding between 222/222 - 114 (.542/.509) and 226/226 - 114 (.552/.518).
I certainly don't want to lose power over the 224/236 cam, but a PTK LT1 car made 990 rwhp with a puny 218/218 cam. Conversely, Brent made 1180 rwhp with the F cam, which is 226/226.
Any thoughts on this?
Mike
10-16-2005, 10:40 PM
#2
FormerVendor
My thoughts is that while peak power will probably be plus or minus 40 rwhp between all those cams, (and lets say peak power is at 6000 for an example), a 226/226 114lsa might have 100+more horsepower at 7000 compared to a 218/218 114lsa cam. This is past peak, but still extending your usable power range.
That's how I've found it works on my car anyway, but I run the 218 cam because I'm picky about low rpm driveability with the stick shift. I would run a bigger cam with an auto.
Other than that, I would just like to say that race gas ownz meth injection, because chances are, meth injection will own your engine. JMHO
That's how I've found it works on my car anyway, but I run the 218 cam because I'm picky about low rpm driveability with the stick shift. I would run a bigger cam with an auto.
Other than that, I would just like to say that race gas ownz meth injection, because chances are, meth injection will own your engine. JMHO
10-17-2005, 10:12 AM
#3
I was thinking of a comp cam custom grind (regular hydraulic roller lobes)
224/224 .560/.560 114LSA (-4 degrees overlap)
My combo will be very similar to yours:
383ci
AF210's (ported by LE), LT4 fully ported intake.....monoblade
T76 Q trim (.96 A/r)
SLP headers...2.5 cross over pipes...merge into a single 2.5 pipe right before the turbo.......3" dp....slp lm
224/224 .560/.560 114LSA (-4 degrees overlap)
My combo will be very similar to yours:
383ci
AF210's (ported by LE), LT4 fully ported intake.....monoblade
T76 Q trim (.96 A/r)
SLP headers...2.5 cross over pipes...merge into a single 2.5 pipe right before the turbo.......3" dp....slp lm
10-17-2005, 12:43 PM
#4
cam It all depends on your combo, Heads, Intake, Exhaust ect. and where do you want to peak. Some people want to rev their engines to Stratospheric ranges, why ???. My combo makes 648 RWHP/612 TQ at a conservative 5800 RPM with 12 lbs of boost and 722 RWHP/713 TQ on C-16 with 14 lbs of boost @ 6000 RPM..
