CALL911

iTrader: (17)

The car:

1995 Z28, LT1,fully forged 383, 8.8:1 CR, meth injection, maxed out D1SC, FMIC, 2 Walbro 255 LPH in tank pumps (2nd one kicks on at 4#'s of boost). Super Vic EFI intake, 24X conversion.

The change:

Have had AFR 180 heads, and Mototron 60# injectors with good success. But now am stepping up to a much more appropriate sized AFR 227 for my setup.

Will I need to go with bigger injectors? I can't get ahold of the guy who tuned the car last to see what the duty cycle was on the dyno. I know if I went with a 75# injector size, it would be okay, and I will do that if I need to. But don't want to if its not necessary.

Let me know what you guys think.

EricYJ-TA

iTrader: (10)

Depends on your duty cycle after the head swap. 80% duty cycle is usually what I would shoot for.

CALL911

iTrader: (17)

Thanks for your reply.

I know it depends on the duty cycle. As I said in the original post, I am unable to find out what duty cycle they are at, so I need input on what people think I should be at with the info from the setup.