Hey guys just finished dropping in my new 383 and wanted to get some SWAG from you builders out there on what you think my HP / TQ numbers will be at the flywheel. Here goes. I cant wait to fire this baby up. Darn painter better hurry I am freaking out, and going broke LOL

Short Block
· 350 4-bolt main block bored .030, clearanced
· Scat 5140 Forged 400 Crank
· Eagle 5140 SIR 5.7” Lightweight Rods
· TRW Lightweight Forged .030 over flattop pistons, 10:1
· Total Seal gapless chrome moly rings
· King main bearings
· 6qt Milodon oil pan black, with traps
· High Pressure Oil Pump
· Internally Balance Rotating Assembly
· FelPro engine gasket set
. Fluidamper
. Hays Lightwieght Aluminum Flywheel
. ARP everything

Valve Train
· Comp Cams Grind CS 280H-R10 part 12-430-8 Hydraulic Roller
280 duration .525 lift and exhaust 110 lobe seperation
· Comp Cams Roller Lifters
· Comp Cams hardened pushrods
· Comp Cams 1.5 Ratio True Roller Rockers
· Comp Cams True Double Roller Timing Chain

Heads and Intake
· K&N Triangle 14” air cleaner 3 " tall
· Edelbrock RPM AirGap Intake
· Edelbrock RPM Aluminum Heads 70cc chamber 2.02 / 1.60 Valves
170cc flow
· Edelbrock 750 Performer Carb swapping for 750 Speed Demon
. 1 Inch spacer
· Holley Mech Fuel Pump swapping for Holley Elec Blue

Ignition
· MSD Pro-Billet Distributor Tach Drive
· MSD 8.5mm spark plug wires, R&M Wire Looms
· MSD 6AL with Rev Limiter
· MSD Adjustable Timing Control
· MSD air/fuel mixture gauge O2

Exhaust
. Hooker Header 1 7/8 primaries
. 4 inch Side pipes with baffles inserts

Cooling
. Be Cool Aluminum Radiator
. Be Cool Aluminum Exapnsion Tank
. Edelbrock Victor Aluminum Water Pump
. Electric Fans
. 160 thermo

 

Max HP @ 5500 - 446
Max TQ @ 4500 - 468

Very nice torque curve 414 @ 2000 --> 468 @ 4500 --> 426 @ 5500

Actual cam specs (12-430-8) from Comp Cams Cam Disk

Dyno2000 V3.08

 

Looks like another overestimate by Desktop Dyno.

HP 430+ @ 5500
TQ 450+ @ 4000

:cool:

:cheers:

 

I was estimating 425 HP and 440TQ with a wide flat power band. Looks like I was pretty close maybe even low. I hope you guys are right. I can't wait. Just dropped her in last week. Painter should be done in a week then I can start putting her back toghether. Thanks for the help.

 

dude that sounds like a bada** engine how much did the parts cost?

 

The roller lifters make that the numbers are not really accurate. Read the manual, for all cam grinds except for all out race select normal flat tappet lifters, even for rollers.

:yesnod:

Marck

 

I am afraid to total it all up. Ha Ha Ha. I know its over 5K in this puppy. Big ticket items were internally balancing, retro fiting the roller cam, and aluminum heads. Come to think of it everything was a big ticket item LOL. Oh well how can you to no to the one you love LOL :crazy:

 

Adjusted numbers using roller cam specs (12-430-8) w/solid flat tappet selected to factor in a more realistic valve acceleration rate:

Max HP 421 @ 5500
Max TQ 447 @ 4500

Still 400+ TQ from 2000-5500


[Modified by mdsmith, 7:12 PM 8/5/2001]

 

Thanks for providing those specs however it is not a solid lifter roller cam. It is a hydaulic roller cam. Can you run them again. Thanks in advance.


[Modified by ScubaJKD, 6:42 PM 8/5/2001]

 

Understand your cam is a hydraulic roller but as Twinnie mentioned in a previous post, the software vendor recommends using a solid FLAT tappet lifter type even though its a roller cam to provide more accurate valve acceleration characteristics for a mild street performance roller cam.

The specs used are perfectly accurate for your cam because the manufacturer's (Comp Cams) cam spec file was used in calculating the effect of the CAM characteristics. The overall result was "tweaked" slightly lower by selecting a solid FLAT tappet lifter type instead of a hydraulic roller lifter type. The software assumes a very aggressive valve acceleration rate more appropriate for full race engines rather than street engines which if used skews the result too high.

Mark


[Modified by mdsmith, 7:57 PM 8/5/2001]

 

Ohhh I get it. Thanks for the help looks like my original guess of 425 / 440 tq was pretty close. I really appreciate the work. Best wishes.

 

Anytime...I'm trying to get my moneys worth with this software.

Mark

 

Well heck in that case go ahead and run me out a revised tq and hp curve up to 6500 rpm. I will take all the free dyno desktop work ya got. Thanks again. Seriously, if its a problem dont worry about it, but if you get a chance that would be great. :D

 

You have mail....

 

where can you get dyno2000 at?

 

http://www.motionsoftware.com