just want some reassurance on combo choices

Christopher Williams said:
I didn't see the isky 272 sheet with the inputs for the @.050
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With a Cam chosen the Biggest bottleneck for many is using a stock steel hood and an intake that fits with a Fullsize air cleaner.
Like a Moroso 14 inch diameter unit.
At least a 4 inch tall filter element.
5- 8 inches tall prefered.
Impossible in many cars.
Packaging is tight often.
 
Maniacmechanic1 said:
With a Cam chosen the Biggest bottleneck for many is using a stock steel hood and an intake that fits with a Fullsize air cleaner.
Like a Moroso 14 inch diameter unit.
At least a 4 inch tall filter element.
5- 8 inches tall prefered.
Impossible in many cars.
Packaging is tight often.
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Agree, hood clearance is on the tighter side
 
I really don,t care what cam "WINS" as long as the software dyno is FAIRLY matched, in the data being used to compare them,
with all the cams data put in using an identical matched system or method of comparison.
now in the real world, i have zero doubts as too the cam that produces the best power curve ,
and anyone whos done enough soft ware dynos is well aware that changing just a few minor factors makes a huge difference in the results predicted,
if you use .004 lift data on one cam vs .050 lift data on a different cam,
thats like trying to compare gals for a playboy fold out photo,
with one based on pictures when,
shes 22 years old vs one based on photos shot,
of a similar gal at age 72

that"50" plus or minus in the calcs matters
 
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Grumpy said:
I really don,t care what cam "WINS" as long as the software dyno is FAIRLY matched, in the data being used to compare them,
with all the cams data put in using an identical matched system or method of comparison.
now in the real world, i have zero doubts as too the cam that produces the best power curve ,
and anyone whos done enough soft ware dynos is well aware that changing just a few minor factors makes a huge difference in the results predicted,
if you use .004 lift data on one cam vs .050 lift data on a different cam,
thats like trying to compare gals for a playboy fold out photo,
with one based on pictures when,
shes 22 years old vs one based on photos shot,
of a similar gal at age 72
that"50" plus or minus in the calcs matters
Click to expand...
This is a really Fun project Grumpy.
Sleeper Camaro.
No Race car chassis.
Stock Unibody.
 
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well, once you use the same .050 duration, as a base line, of comparison,
on all the cams being compared,using identical other data in all other factors,
how does the predicted results of that software compare,
too the 4 cams using the same data formula?

crower 00471
crane 119651
crane 119661
isky
 
Maniacmechanic1 said:
If I have time I will run all with mufflers.
Should see 80-100 Hp drop .
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Probably so. I'm thinking I will go with the borla xr1s 3", x-pipe, Doug's 1.75" primary full length 3" collector header. I already have the headers and those borlas sounded pretty sweet. Add whatever cams you like, just keep it street able with decent vacuum. Car cruises around 2600-2700rpm at 65 if I remember correctly. Needs at least 10" of vacuum, so no crazy overlap. Stick with 1.6 rockers and the pro Flo setup. It's what I'm going to use. 35lb injectors. 6500rpm redline. No crazy durations. And don't forget about that high first gear. The more I talk about that damn first gear, the more I want to switch tranny's...$$$ money pit... Not trying to win a race either. Trying to sound nice. Drive nice, blow tires off at will. I know I'm not going to win a race, not trying to. Dependable valvetrain is important.
 
keep in mind soft ware predictions can be useful at showing trends,
but the real world has a well know tradition of making the predicted out-comes look rather optimistic or not following those predictions.
Ive run several of those cams (all but the isky) in my personal corvettes 383 sbc, you really can,t expect to see more than a 45-55 peak, hp swing,
between the mildest crane 119661,
through the crower 00471- all the way up to the crane 119651, but what is rather noticeable is the off idle and part throttle drive-ability
youll spend a great deal more time at below 3500 rpm, than above 6000 rpm in my experience.

http://garage.grumpysperformance.com/index.php?threads/my-current-corvettes-383-combo.430/

maybe its just because Im 70, but I know I have more than enough power with any of those cams, in a properly built 383-406, SBC,
to destroy the rear tires,and twist off half shafts, at will,
so I'm not all that concerned with having the last potential peak hp available.
 
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