Searching for perfect cam-engine dyno please

[Guest needwaymorespeed]

Hi guys nayone with a dyno program could you please run these two cams for me .

engine 406 sbc

carb 830 holley annular

intake vic jr

heads dart pro-1 flow as follows

intake exhasut

.200 136 113

.300 197 160

.400 253 196

.500 287 217

.600 301 227

valves 2.08 1.60

compression 10.51

intake port runner size is 221cc

headers are 1 and 3/4 primaries 3 in collectors have 2.5 in exhaust

trying to pick between two cams they are both solid rollers

this is from isky

.615 intake and exhaust

ivo 22 ivc 52

evo 63 evc 21 specs at .o50

108 lobe sep

254 and 264 duration at .050

the 2nd cam is a schneider cam

.577 lift intake and exhaust

ivo 34 ivc 70

evo 74 evc 30 these specs are seat to seat

110 lobe sep

both cams run .022 lash strait across what does this due to the aforementioned figures -how much duration does it loose?

leaning towards the schneider cam but realy respect the tech guy at isky and value his recomendation.

want the car to run 2500 to 6500 plan on doing the power tour,my elevation that I do most of my driving at is 4500 ft

thanks alot

Curtis

[grumpyvette]

a quick guess by my custom computer program says sea level hp/tq #s

cam (1) will be at about 530hp/495 tq

cam (2) will be at about 530hp/510 tq

[Guest needwaymorespeed]

Thanks grumpy do you happen to have the rpm range on those figures?? Im kind of surprised I thought the first cam smaller schneider would do better.

Thanks alot appreciate it

Curtis

[Guest needwaymorespeed]

oops the schneider did do better

thanks

[grumpyvette]

the schnider cam torque peaks near 4500rpm and hp reaks at 6000rpm

the isky torque peaks at around 5500rpm and hp peaks at 6600rpm

the schnider cam is by far the better match to a 406 engines piston speed rpm limits and cylinder filling efficiency, flow curve, and its somewhat doubtfull that the isky cam would really run on the street that well for trips if its most effective in the 6500-7000rpm range,btw both cams are really not ment as street driven cams,might I suggest the CRANE #119651 hydrolic roller cam, true it will drop your peak power to about500hp/520 tq but it will raise the torque at 2000rpm from about 260ft lbs with the other two cams to about 420ft lbs at 2000rpm and be far easier on your valve train (important on a power tour)as its a HYDROLIC ROLLER it peaks the torque at about 4500rpm and hp at about 5000rpm

 

http://dab7.cranecams.com/SpecCard/DisplayCatalogCard.asp?PN=119651&B1=Display+Card

 

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