When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
What fuel injector should I use ?
i went from an Ls 1 with 450hp to a strocked Ls 3 418ci with 675 hp. I upgraded the intake to a custom sheet metal intake with a 102 TB. from sharp customs. I heard you can use
mustang 42lbs. green injectors n there a lot less money ? 42 to much ?
the motors in a NASCAR Stockcar so it's not doing any street driving. All racing on road courses.
Thank you
You have to go very large to be to large. I'm running 66lb injectors on a 416 and only see 57% duty cycle at 7250 rpm, but am still able to street drive the car.
Edit: I should not that I'm using a vac reference regulator so my injectors stay 66lbs at idle.
ls2 418CID NA with 42# Bosch inj. (ls3 heads&intake). IDS is over 100% @ over 7000rpm. I'm going to be switching to the Bosch 52 # injctors(early ls9/ford GT500) with 6 holes for better atomization. Seems like the 42's won't power a 418 CID 3700 lb car beyond 10 second passes with stock late f-body fuel pressures and stock pump or a 255/320 pump @ stock voltage. The 52's should do the trick for now. With power adders (nitrous/E-85) and an aftermarket fpr. The 52's will flow 58lbs @ 4bar.
Fuel injectors 
