I have a 95 with full bolt ons and true dual exhaust.
I was on a site that was selling Svo injectors for $329.00
I hear SVO's are good injectors. I am also putting in the hotcam.
will 24# injectors be ok??? I'm not sure what stock is anyway. But
I dont think I need bigger injectors than 24#

 

24# injectors are stock on LT1s, 94-97

 

ok, COOL THEN!

So By me going with the hotcam, does not mean I have to go with
bigger injectors right?? I can still stay at 24#??

 

yea with a hotcam you should be ok, if you are going to spray or go with FI I would get bigger injectors

 

What about injectors on a 93 when doin a hotcam... aren't they like 22#? Will those be ok to keep if I go hotcam?

 

Third gen TPI 350 injectors are 22#'s.. - i am still kinda new to the LT1 but i thought that they all were 24's from the factory...

 

93 is 22# also, just checked on speeddensity.org.

However, there is a guy on there making over 340rwhp/rwtq with a hotcam, ported heads, and ported intake... all on stock 22# injectors...

so 22# should be ok, and the 24# should def be ok.

 

im making 351rwhp on an extreme energies cam- 230/236 with 112lsa- LT1 alum heads ported & polished, reprogrammed computer and 24#ers..

 

http://www.geocities.com/scwizzo/graph.jpg

Shows how much horsepower an injector can handle at 85% duty cycle.

 

yeah- that graph shows that my injectors were pretty much maxed out then...

 

Not really. They are 85% duty cycle like they should be. Maxed out would be 99% duty cycle

 

ah, got ya.. well- i dunno what duty cycle they are running.. lol..the computer has been reprogramed..

 

When figuring injector sizing use your FW HP. A quick way is to multiply it by
.07 to get the size at 80% duty cycle.
Your 351 RWHP plus 15% drive train loss will be 403 FWHP, times .07 equals 28# injector.

 

ahh- i c tha light now..
but manual cars are usually an average of about 20% drive train loss and a4's usually like 25% right?

 

That would be a huge loss. On a 300 hp engine you would have 225 at the wheels. It is usually around 15%.

And I was wrong, the graph is for flywheel hp, not rear wheel horsepower. So you're 24#'s are probably about maxed out.