Thread: 355 engine desktop dyno needed

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will do. . . . .I'm just concerned with those torque numbers. . . . engine efficiency seems to come alive at 6k also. . . .would a cam change that? change the torque that is.

Hey Red, I looked over my cam input figures and found a decimal in the wrong place,

Here is the corrected dyno sim, flywheel, not rear wheel,

No more late night input for me.

[QUOTE=viking]Hey Red, I looked over my cam input figures and found a decimal in the wrong place,

Here is the corrected dyno sim, flywheel, not rear wheel,

No more late night input for me. [/QUO I think you might have done more than put a decimal in the wrong place.
The cam specs. are .427/.454 duration at .050 is 204/216.
There is no way this cam is making 437 hp at 6,000 rpms.
Crane says it has a 1,500-4,500 rpm power band.
I would guess it would make max. hp. around 4,200 rpms and not 6,000 rpms.
He would be darn lucky to get 337 hp out of it let alone 437.
Like I said before if you put crap in for information you will get crap out.

here's what I got. EA 3 is probably the best software, dyno 2000 is ok, it's off +- 50 HP or so, sometimes. dyno 2000 is what I have

[QUOTE=erik erikson]

Originally Posted by viking

Hey Red, I looked over my cam input figures and found a decimal in the wrong place,

Here is the corrected dyno sim, flywheel, not rear wheel,

No more late night input for me. [/QUO I think you might have done more than put a decimal in the wrong place.
The cam specs. are .427/.454 duration at .050 is 204/216.
There is no way this cam is making 437 hp at 6,000 rpms.
Crane says it has a 1,500-4,500 rpm power band.
I would guess it would make max. hp. around 4,200 rpms and not 6,000 rpms.
He would be darn lucky to get 337 hp out of it let alone 437.
Like I said before if you put crap in for information you will get crap out.

Yeah it look way high to me also, but I triple checked the input , I wish some one had some engine specks and REAL flywheel dyno numbers that it produced so I could compare and know once and for all if it's good/close/junk, you got any from a engine dyno Erik ?

Originally Posted by erik erikson

Like I said before if you put crap in for information you will get crap out.

Did not mean to cause an argument. Sounds like my engine is tearing this forum apart!

Anybody know where to get dyno software locally? I need to change the cam (may run overdrive) to one with a power range in a lower RPM and pistons, since these are 9.73 and that will not allow 87-89 octane. Thanks guys!

Originally Posted by BigRedTrucker

Did not mean to cause an argument. Sounds like my engine is tearing this forum apart!

Anybody know where to get dyno software locally? I need to change the cam (may run overdrive) to one with a power range in a lower RPM and pistons, since these are 9.73 and that will not allow 87-89 octane. Thanks guys!

If you want a "baseline" hp reading try www.proracingsim.com
They also have software on picking the right cam also.
Don't be arfaid to get up your check book it does not come cheap.

Originally Posted by BigRedTrucker

Did not mean to cause an argument. Sounds like my engine is tearing this forum apart!

Anybody know where to get dyno software locally? I need to change the cam (may run overdrive) to one with a power range in a lower RPM and pistons, since these are 9.73 and that will not allow 87-89 octane. Thanks guys!

No argument issues here, if this software can be used reliably I'll use it, if not it was a fun program to play with for awhile and I'll make a overpriced coaster out of it.

The basic what will/won't work for most engines have already been figured out, whats left is the fine tweeks IMHO.

For most I'd guess it comes down to $$$, how fast can you afford to go, and where best to spend it.