im puttin together a 5.3 with p&p heads milled 224/224 cam full bolt ons will i need to upgrade injectors as well or will the stock ones work for now and how much is it to upgrade to bigger injectors and wat all is involved

 

you will need injectors. 8.1 marine injectors are plug and play

 

probably around $300+ for 42 lb injectors. You can find some used one because people move up to the 60's.

 

I have a set of 42#'s that came off my radix used about 1 month plug and play should be off my 6.0 i like to get $300 shipped if interested e-mail me. brobradh77@aol.com

I know i'm kind of a newb on here but alot of people on here know me from other sites in case your worried about me ripping you off or somethin. Regular/***** on SSS.com

 

can i drive it wit stock injectors meanwhile ?

 

Yea you can drive it, but you're injector duty cycle will be pretty high after 5k rpms or so.

If I were you I'd just get some regular 8.1L injectors. They flow at 31# which is plenty for 99% of all n/a modded 6.0s and smaller

If you decide to go bigger, you can find plenty of marine injectors sets for $200 or less. Just check ebay and local forums. I know everybody says I got lucky, but I paid $36 for my 8.1L injectors off ebay.

 

I've never seen 42# injectors for under $300 bucks any where even e-bay. I must not be looking in the right spot.

 

Just a quick search:

42#ers
https://www.performancetrucks.net/fo...t=42+injectors
44#ers
https://www.performancetrucks.net/fo...t=42+injectors
42#ers
https://www.performancetrucks.net/fo...t=42+injectors

 

Just giving them away over here.