505 build Dyno numbers

[496 polara]

Had my 505 on the Dyno last Friday. I will link the thread from FABO for those who don't frequent there. Thought I would share with the rest of the class.



Here goes nothing aka 505 build

 

[dvw]

Buillding a similar engine right now. Motor home 440 block, 4.350x4.500, Trick Flow 240's, 235/241 564/572 112 from Dwayne, 6 pac intake and carbs, 10.5-1, 727, 3.54 Dana. Going in a friends V code Challenger.
Doug

 

[496 polara]

That will be a torque monster.

 

[dvw]

Thats the plan. He has plenty of racecars so this one is all street This will be his wifes. It has Caltracs as well.
Doug

 

[Kern Dog]

Buillding a similar engine right now. Motor home 440 block, 4.350x4.500, Trick Flow 240's, 235/241 564/572 112 from Dwayne, 6 pac intake and carbs, 10.5-1, 727, 3.54 Dana. Going in a friends V code Challenger.
Doug

Torquey big blocks must be in style around here...I also ordered a hydraulic roller from Dwayne...238/244 @ .050, .581/.577 lift but with a 112 LSA for better vacuum. 440/495, 9.8 to 1, Edelbrock heads lightly ported, RPM intake, 2" headers. Dwayne thinks mine will peak around 5500, the OPs peaked at 5400 with 10 more cubes, a bigger cam and better heads so mine may peak earlier than we thought.
I'm excited though....Having more torque down low compared to the huge solid lifter cam I have now...that will make for a much better street car.

 

[496 polara]

Your 112* may widen the curve a little. I was a little surprised mine peaked so early. Although at 5900 I was only down 14hp.

 

[padam]

Nice!

 

[padam]

Your 112* may widen the curve a little. I was a little surprised mine peaked so early. Although at 5900 I was only down 14hp.

one takeaway I got from Andy F’s book is that the more cubes, the lower the rpm hp will peak with the same components. If I got it right.

 

[Kern Dog]

Your 112* may widen the curve a little. I was a little surprised mine peaked so early. Although at 5900 I was only down 14hp.

It would be interesting to see the graph at and beyond peak HP. If it falls off a cliff, that isn't good but if the drop off is gradual, that is fantastic.

one takeaway I got from Andy F’s book is that the more cubes, the lower the rpm hp will peak with the same components. If I got it right.

I'll bet you're right on that. It makes sense with the same reasoning that a cam that is choppy in a 383 may be mild in a 505.

 

[496 polara]

Dyno was having trouble holding the load so this is all I have. No time for tuning unfortunately.

 

[padam]

View attachment 1814129

Dyno was having trouble holding the load so this is all I have. No time for tuning unfortunately.

Haha that’s what you want hear about your dyno test.