pillarpod

Hey guys, After my head cam swap i got a mail tune from Ion and went and got it dyno and did 353hp to the wheels. I'm wanting to get it dyno tune now, but was wondering you think I'll need bigger injectors and fuel pump?

Mods.
Bottom End is bone stock

Top End
TFS 21* heads (cast)
Custom cam 226/234-106lsa Intake .575 Exhaust .577
Comp Ultra Pro Mags 1.6
LS7 lifters
ChromeMoly Hardened Push Rods 5/16'' x 7.375''

All supporting bolt ons.

Tranny
3600 stall with a stage 2 Trans Go shift kit with 3.73sin the rear.

RamAir95TA

iTrader: (2)

I would assume you would definitely need bigger injectors, but the stock pump (assuming it's in good health) should suffice. Monitor your %DC @ WOT.

pillarpod

how big of injectors you think i should go? Pump was replace about 2 years ago

RamAir95TA

iTrader: (2)

Well if you've got around 400fwhp, using the popular injector formula of HP x .07, you need injectors sized in the 28# range, so I'd go with either a 30# or a 36# injector, giving you some room in the future for further upgrades.

Monitor your fuel pressure at WOT and make sure it doesn't drop.

pillarpod

is there any particular brand to lean to or to stay away from?

RamAir95TA

iTrader: (2)

I like the Lucas/Delphis, although the Ford SVOs are good too (rated at different pressure though).

Definitely stay away from the Accels.

pillarpod

i need to get injectors with EV1-style wiring connectors right?

94ss06gxp

iTrader: (5)

yes .