Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Are these enough?

Old 04-29-2011, 12:44 PM
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Default Are these enough?

Im installing a vortec ho kit with intercooler in the next few days and have some fueling concerns. I already have the recetronix kit with wire harness. The kit came with bosch 38# injectors. I believe they convert to about 43#'ers with ls1 fuel pressures. Im hoping for 475-500 rwhp with around 8lbs boost. I have been told these might be enough or might not be enough. Any thoughts? I dont wanna replace them if they are up to the task as Im not looking for more hp in the near future.
Old 04-29-2011, 02:31 PM
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If u make around 475hp it more than likely wont be enough. I had the Ford Svo 42# injectors and was maxing them out with my stock 3.125 pulley which made 6-7psi. Mods to car can be seen here along with dyno graph= https://ls1tech.com/forums/dynamomet...nod-today.html
Old 04-29-2011, 06:11 PM
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Did you ever run the blower with stock cam? What #'s did it make? Boost and rwhp. I just ordered siemens 60#er's today.
Old 05-06-2011, 11:26 AM
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I never ran it with the stock cam. I was going to keep the car all stock and run just the supercharger, but the mod bug bit real hard and I just decided to do the cam/headers/exhaust etc at the same time i put the supercharger on.
Old 05-06-2011, 11:32 AM
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Return or return-less fuel system?
Old 05-06-2011, 11:54 AM
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if you are asking me, mine was just on the stock fuel system with a inline racetronix which I am in the process of upgrading to dual in tank walbro 255's.
Old 05-06-2011, 11:59 AM
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I think your gonna need some bigger ones. Id say some 60s.
Old 05-06-2011, 01:16 PM
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ls1 redz he said he already ordered 60 pounders.
Old 05-06-2011, 01:41 PM
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Originally Posted by John2005
ls1 redz he said he already ordered 60 pounders.
Correct, I ordered the 60's from FIC. Im going to the dyno this wednesday. Will post results after.


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