Wassup guys,

I was wondering if you guys could look over my timing numbers and tell me how they look. I did up a manual step retard and I just wanted to be sure I did it right.

Here are my step retard numbers:
0.4 psi - 0.25* per psi
2.1 psi - 0.25* per psi
3.9 psi - 0.50* per psi
5.7 psi - 0.75* per psi
7.5 psi - 0.85* per psi
9.3 psi - 0.95* per psi
11.2 psi - 1* per psi

LOW CAM TIMING


HIGH CAM TIMING


let me know what you guys think
TIA

 

Way way too conservative

 

Yup I'm tuning it more for safety not for power. So I wanted to keep it conservative and not too aggressive. This was also when I had a stock motor, soon I'll have a fully built motor though so I'll probably have to adjust the timing to match my new setup.

But if you have another idea for a step retard setup under boost let me know. Also if you guys think I should advance my timing throughout the vacuum portion let me know how much.

Here is what my new setup will be, all work is to be done by earl:
GSR head with Portflow headwork
GSR block sleeved by Benson 83mm bore
LS crank
9.0:1 CP pistons, but according to earl my CR will be 9.4:1
750cc injectors
91 octane gas, looking to make 350-400+ WHP

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">Way way too conservative</TD></TR></TABLE>

Even for 91 octane. It would be pointless to run anymore than 7psi at this point because w/ that timing there will be no gains. I wouldn't start the step retard until about 3 psi. Then I.E.
3- .4* per psi
5- .5* per psi
7- .6* per psi
9- .7* per psi
11- .8* per psi
That will still be conservative IMO. Make sure your A/F is solid and you should be good even w/ the 91 oct.

 

thanks meng,

I'll redo my step retard and use your numbers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">thanks meng,

I'll redo my step retard and use your numbers. </TD></TR></TABLE>

Sounds good. Good luck w/ it and read those plugs

Phil

 

its realiative low