FI size question
Thread Starter
Pro
Joined: Aug 2004
Posts: 549
Likes: 13
From: Richmond VA
FI size question
I am changing the top end on the LT1 to ported heads, 565 lift cam, and LT's. All the sites I look at say I need at least 30 lbs/hr and many say 39 lbs/hr. I do not want to run them at 90% but don't want to get too much either, any ideas or thoughts?
Safety Car
Joined: May 2003
Posts: 4,283
Likes: 0
From: Houston Texas
30's should be more than enough. Wouldn't go bigger unless you stroke it and go with a cam in the 6's. I have seen 24's support 425hp where is about where you will be depending on the porting.
Burning Brakes
Joined: Dec 2006
Posts: 936
Likes: 2
From: Tyrone PA
I've been researching this myself lately, on an L98 tho. Reworked heads, CC503 cam and a stealthram soon to be installed. Going to rev to about 6300. Most research has pointed me to 24 lb/hr injectors, although many have said the stock injectors are still plenty. Forum member Vic'89 is running mid to low 11's in the 1/4 with a setup similar to what I'm heading towards and he said he is still running stock size injectors with no sign of needing anything bigger. I have no experience with the LT1 but I would guess that 30's would be plenty. Who is going to do your tune?? If you are not doing it yourself then drop your tuner a line and ask him what he suggests.
