Should I advance the cam timing on Steeda cam?

poboys 94

Member

Dec 5, 2006

115

2

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St. Louis Mo.

Jun 7, 2008

#1

• Jun 7, 2008

• #1

Good or bad, or should I just leave it be? I have an adjustable timing chain set up, just for kicks would it give the engine more low end power if I advance the Steeda 19 by 2 or 4 degrees. Im bored and feel like experimenting.

 

juiced_94gt

Active Member

Mar 30, 2005

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Southern California

Jun 7, 2008

#2

• Jun 7, 2008

• #2

I would personally not play with it unless you're going to degree it, thats when your going to get optimal results.

 

blksn955.o

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Mar 15, 2002

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st.louis mo 314

Jun 7, 2008

#3

• Jun 7, 2008

• #3

A lot of aftermarket cams have some degree if advance built into the grind.

I would call steeda and ask the tech line for your cam.

Odds are going straight up dot to dot is all you will need to do.

 

final5-0

Mustang Master

Apr 6, 2003

6,817

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79

DFW Texas

Jun 8, 2008

#4

• Jun 8, 2008

• #4

I couldn't give you a definitive answer to your Q but my thoughts are

A rule of thumb is ................
advance for low end and retard for the high end of the power range

Another rule of thumb is ...............
2 degrees will be a fairly subtle if noticable at all kinda difference
from the things I've seen in the past

IIRC
seems like you see alot of crank keyways done with 4 degree variations

With the #19 cam, a bit of advance just might be a good thing

but I'd want to get some advice from someone who is more qualified than
me ... thats for sure

Grady

 

RIO5.0

15 Year Member

Feb 16, 2001

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N.H.

Jun 8, 2008

#5

• Jun 8, 2008

• #5

Since your in the mood to goof around, then why not... Thumper told me I should advance mine 2 deg's when installed...I went straight up though... The 19 is kinda lazy til around 2800...Moving it down some would be a good thing. I added 373 to help some.. If opening it up again I'd move mine..

I would check the PV for sure...I had plenty of room on both I & E and my heads were milled some.

 

poboys 94

Member

Dec 5, 2006

115

2

18

St. Louis Mo.

Jun 9, 2008

#6

• Jun 9, 2008

• #6

RIO5.0 said:

Since your in the mood to goof around, then why not... Thumper told me I should advance mine 2 deg's when installed...I went straight up though... The 19 is kinda lazy til around 2800...Moving it down some would be a good thing. I added 373 to help some.. If opening it up again I'd move mine..

I would check the PV for sure...I had plenty of room on both I & E and my heads were milled some.

Click to expand...

My thoughts exactly about this cam I've even pondered 4:10s.

 

G

ga94gt

New Member

May 17, 2007

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Ringgold GA

Jun 9, 2008

#7

• Jun 9, 2008

• #7

I may try this, I am putting a 19 in my car. Why would you need to check PTVC? Does advancing it chage the (for lack of a better term) geometry of the valves and cam?

Poboys let me know how it works out for you. I could uses a little more lowend due to the AODE

 

Black95GTS

Active Member

Jan 8, 2004

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Marlborough, MA

Jun 9, 2008

#8

• Jun 9, 2008

• #8

ga94gt said:

I may try this, I am putting a 19 in my car. Why would you need to check PTVC? Does advancing it chage the (for lack of a better term) geometry of the valves and cam?

Poboys let me know how it works out for you. I could uses a little more lowend due to the AODE

Click to expand...

Retarding the camshaft will open the exhaust valve earlier, and the intake valve later. This will increase clearances on the intake side, but decrease them by the same amount on the exhaust side.

Advancing the camshaft will open the intake valve earlier, the exhaust valve later. This will increase clearances on the exhaust side, but decrease them by the same amount on the intake side.

So yes, you will need to check PTV clearances when playing with the camshaft timing. You want minimum clearance (rule of thumb) to be .08" on the intake and .1" on the exhaust.

Adam

 

G

ga94gt

New Member

May 17, 2007

138

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Ringgold GA

Jun 9, 2008

#9

• Jun 9, 2008

• #9

Black95GTS said:

Retarding the camshaft will open the exhaust valve earlier, and the intake valve later. This will increase clearances on the intake side, but decrease them by the same amount on the exhaust side.

Advancing the camshaft will open the intake valve earlier, the exhaust valve later. This will increase clearances on the exhaust side, but decrease them by the same amount on the intake side.

So yes, you will need to check PTV clearances when playing with the camshaft timing. You want minimum clearance (rule of thumb) to be .08" on the intake and .1" on the exhaust.

Adam

Click to expand...

Thank you sir

 

T

Touring23

Founding Member

Dec 29, 2001

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Washington

Jun 9, 2008

#10

• Jun 9, 2008

• #10

Hhhhmmm, I just installed mine 4° retarded. And like it.

If anyone cares, the stock pushrods weren't long enough for my (stock) pedestal-mounts with the new cam.

 

poboys 94

Member

Dec 5, 2006

115

2

18

St. Louis Mo.

Jun 10, 2008

#11

• Jun 10, 2008

• #11

Touring23 said:

Hhhhmmm, I just installed mine 4° retarded. And like it.

If anyone cares, the stock pushrods weren't long enough for my (stock) pedestal-mounts with the new cam.

Click to expand...

I went with 6.300s for the same reason.