Recipe for a 350 RWHP NA 2V

01GT4.6 · July 25th, 2008, 08:08 PM

Originally Posted by acmillr

Good question. To answer it the simplest way, the car made 339/342 on a loaded Land and Sea dyno (very similar to Mustang dyno) about six weeks ago while we were adjusting the tune. I am trying to find the print out from thatrun, but I don't know where I put it.....

cool, I don't need to see a print up, I was just asking if it's been on more than one dyno and duplicated the numbers. So, I'm assuming the answer is yes then?
My CR is 10.54:1 and you are close on my cams specs, but like you I don't like to post them up (especially since the grinds belong to Tim)

01GT4.6 · July 25th, 2008, 09:05 PM

Originally Posted by acmillr

I was reading back and I understand that you are on a stock shortblock. Is that correct? If so, there's the power difference. You do realize that the flat tops give me roughly 11.7:1 compression?

here I listed all my mods, you posted 2 replies later...
took my car to the track today, and ran a 1.60 on 17" nittos

Originally Posted by acmillr

Well, come on........
Yeah, somebody didn't read everything.......

I hope this wasn't referring to me...

acmillr · July 25th, 2008, 11:23 PM

Yeah the cams and slight compression difference is probably where the power difference is.......

acmillr · July 25th, 2008, 11:24 PM

Cam spec.s

Intake: 250 degrees @ .050" lift
Exhaust: 246 degrees @ .050" lift
,545" lift both sides
110 degrees of lobe seperation

I'm over it..........

HMUSN · July 25th, 2008, 11:28 PM

^ wow. I didn't expect that

01GT4.6 · July 25th, 2008, 11:36 PM

Originally Posted by acmillr

Cam spec.s

Intake: 250 degrees @ .050" lift
Exhaust: 246 degrees @ .050" lift
,545" lift both sides
110 degrees of lobe seperation

I'm over it..........

you had to flycut your pistons for those cams, right? What a/f are you running?

MikeD05GT · July 26th, 2008, 01:31 AM

someone explain those specs

HBK_2007 · July 26th, 2008, 02:03 AM

^+2

MineralGreyGT · July 27th, 2008, 09:23 AM

^ I hope this helps I did a lab on an old diesel engine at my school

Objective:
To obtain the timing circle of a diesel engine.

Abstract:
We turned a diesel engine about its flywheel and took measurements using a rod and top dead center (T.O.D.) and bottom dead center (B.O.D.) as a reference. Using masking tape on the flywheel we marked the various points of timing and in the end with simple calculations found the degrees at which it all occurred, than we displayed it on a four cycle timing diagram.

Data:
Measurement From TDC (in), Measurement From BDC (in), Angle Ahead or Behind (Degrees)
Intake Opens: 1.18, 36, 7.17
Intake Closes: 37.50, 4.75, 228.81
Exhaust Opens: 27.00, 1.125, 164.75
Exhaust Closes: 2.19, 32.5, 13.36
Beginning of
Pump Stroke
(Injection) Open: 56.50, 27.5, 344.75

Circumference (in), bottom dead, top dead
59, 29.25, 31

Sample Calculations:
(1.18/59)*360 = 7.17 degrees
(37.5/59)*360 = 228.81 degrees
(27.0/59)*360 = 164.75 degrees

Results:
1.

MineralGreyGT · July 27th, 2008, 09:32 AM

Hey ACmiller did you custom design those specs on your cam or did a shop do em for you?

MikeD05GT · July 27th, 2008, 10:36 AM

^^ i think he worked with comp on them..

acmillr · July 27th, 2008, 03:55 PM

Originally Posted by 01GT4.6

you had to flycut your pistons for those cams, right? What a/f are you running?

Yes, and it makes the best power around 12.5:1........

acmillr · July 27th, 2008, 03:57 PM

Originally Posted by MineralGreyGT

Hey ACmiller did you custom design those specs on your cam or did a shop do em for you?

I came up with those...... However, I saw that Comp is peddaling the exact same grind to customers now.......

PapaSmurf · July 27th, 2008, 04:15 PM

After reading those cam specs I was like damn thats got to have a nice lopey sounding idle lol.

acmillr · July 27th, 2008, 04:33 PM

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MineralGreyGT · July 27th, 2008, 04:43 PM

So I see you have a general knowledge in kinematics, I am reading a book on it right now, btw sounds sweet.

PapaSmurf · July 27th, 2008, 05:14 PM

Originally Posted by MineralGreyGT

So I see you have a general knowledge in kinematics, I am reading a book on it right now, btw sounds sweet.

I just have a basic idea of how to read them thats all.

And AC your car sounds amazing! I will probably be emailing you once i get closer to my build.

Rico-mofos · July 27th, 2008, 05:29 PM

holy shit that sounds means as hell!

2004ztangGT · July 27th, 2008, 05:40 PM

That sounds freakin nice!!

Noob question here but what part of the cam specs gives it that awesome idle or lope. is it the 110 degrees of lobe seperation? How close to that sound can you get before having to notch the pistons?

01GT4.6 · July 27th, 2008, 09:53 PM

Originally Posted by 2004ztangGT

That sounds freakin nice!!

Noob question here but what part of the cam specs gives it that awesome idle or lope. is it the 110 degrees of lobe seperation? How close to that sound can you get before having to notch the pistons?

this is how I understand it, someone correct me if I'm wrong...

an easy way to figure out how much chop (or lope) a cam will have is like this:
The more overlap the choppier the sound.
Figuring Overlap Of A Cam

- Add the intake and exhaust durations
- Divide the result by 4
- Subtract the LSA
- Multiply the results by 2

July 25th, 2008, 11:23 PM	#43
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,120 iTrader: 2 reviews	Yeah the cams and slight compression difference is probably where the power difference is....... __________________

July 25th, 2008, 11:24 PM	#44
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,120 iTrader: 2 reviews	Cam spec.s Intake: 250 degrees @ .050" lift Exhaust: 246 degrees @ .050" lift ,545" lift both sides 110 degrees of lobe seperation I'm over it.......... __________________

July 25th, 2008, 11:28 PM	#45
HMUSN Doc 1986 SVO Join Date: Nov 2006 Posts: 36,836 iTrader: 9 reviews	^ wow. I didn't expect that __________________

July 26th, 2008, 02:03 AM	#48
HBK_2007 Genibus Nitito Canus 2009 Ford Mustang GT next year Join Date: Jan 2008 Location: Wyoming Posts: 2,676 iTrader: 0 reviews	^+2 __________________ Red 1996 GT: JLT RAI, Steeda Underdrive pullies, Stewart Waterpump; nothing to brag about Black 2009 45th aniverary edition GT 5 speed: K&N CAI, BBK Twin 62mm Throttle Body, BBK Underdrive Pullies, muffler delete

July 27th, 2008, 09:23 AM	#49
MineralGreyGT Premium Member 2002 Mustang GT Never Ran er! Join Date: Jun 2007 Location: DartsMouth, MA Posts: 1,047 iTrader: 0 reviews	^ I hope this helps I did a lab on an old diesel engine at my school Objective: To obtain the timing circle of a diesel engine. Abstract: We turned a diesel engine about its flywheel and took measurements using a rod and top dead center (T.O.D.) and bottom dead center (B.O.D.) as a reference. Using masking tape on the flywheel we marked the various points of timing and in the end with simple calculations found the degrees at which it all occurred, than we displayed it on a four cycle timing diagram. Data: Measurement From TDC (in), Measurement From BDC (in), Angle Ahead or Behind (Degrees) Intake Opens: 1.18, 36, 7.17 Intake Closes: 37.50, 4.75, 228.81 Exhaust Opens: 27.00, 1.125, 164.75 Exhaust Closes: 2.19, 32.5, 13.36 Beginning of Pump Stroke (Injection) Open: 56.50, 27.5, 344.75 Circumference (in), bottom dead, top dead 59, 29.25, 31 Sample Calculations: (1.18/59)360 = 7.17 degrees (37.5/59)360 = 228.81 degrees (27.0/59)360 = 164.75 degrees Results: 1. __________________ Last edited by MineralGreyGT; July 27th, 2008 at 09:31 AM.*

July 26th, 2008, 01:31 AM	#47
MikeD05GT MM Fanatic 2005 Mustang GT Join Date: Dec 2007 Location: Cedar Grove NJ Posts: 3,207 iTrader: 0 reviews	someone explain those specs

July 27th, 2008, 09:32 AM	#50
MineralGreyGT Premium Member 2002 Mustang GT Never Ran er! Join Date: Jun 2007 Location: DartsMouth, MA Posts: 1,047 iTrader: 0 reviews	Hey ACmiller did you custom design those specs on your cam or did a shop do em for you? __________________

July 27th, 2008, 10:36 AM	#51
MikeD05GT MM Fanatic 2005 Mustang GT Join Date: Dec 2007 Location: Cedar Grove NJ Posts: 3,207 iTrader: 0 reviews	^^ i think he worked with comp on them..

July 27th, 2008, 04:15 PM	#54
PapaSmurf Hardcore Enthusiast 2003 Mustang GT 12.28 @ 116 Join Date: Jan 2008 Location: Chesapeake, VA Posts: 2,474 iTrader: 11 reviews	After reading those cam specs I was like damn thats got to have a nice lopey sounding idle lol. __________________ 2003 Sonic Blue GT---SLP Longtubes, SLP X, Magnaflow Magnapack CB, 75mm TB/Plenum, MP2 Performance stage 2 heads, MHS Stage 3R cams, Built rear w/4.30's

July 27th, 2008, 04:43 PM	#56
MineralGreyGT Premium Member 2002 Mustang GT Never Ran er! Join Date: Jun 2007 Location: DartsMouth, MA Posts: 1,047 iTrader: 0 reviews	So I see you have a general knowledge in kinematics, I am reading a book on it right now, btw sounds sweet. __________________

July 27th, 2008, 05:29 PM	#58
Rico-mofos Hardcore Enthusiast 2008 Bullitt #890 slow Join Date: Jan 2008 Location: Chicago Posts: 1,594 iTrader: 0 reviews	holy shit that sounds means as hell! __________________ BULLITT CREW #5 LT GTB mufflers for sale

July 27th, 2008, 05:40 PM	#59
2004ztangGT Newbie 2004 Mustang GT Join Date: Sep 2007 Location: San Antonio, Tx Posts: 18 iTrader: 0 reviews	That sounds freakin nice!! Noob question here but what part of the cam specs gives it that awesome idle or lope. is it the 110 degrees of lobe seperation? How close to that sound can you get before having to notch the pistons?

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