Heath Hill Posted March 11, 2021 Share Posted March 11, 2021 I want to know has anyone ever put 460 injectors into a 300? I'd like to them have mack turn my computer to 400. Any thoughts? Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/ Share on other sites More sharing options...
880joe Posted March 12, 2021 Share Posted March 12, 2021 The 460 injectors and turbo are a pretty good setup on a 355/380 if you're talking about an early etech. If you go to the 400 it has 1450 torque where the 355/380 has 1550 I myself would rather have the torque vs the hp Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470455 Share on other sites More sharing options...
Heath Hill Posted March 12, 2021 Author Share Posted March 12, 2021 Agreed torque gets the work done! But this wouldn't actually be a 400. The parameters in the computer would think it was but the injectors (and I actually also have the 460 turbo too) I wanted 427 but mack says no. Do you know if I can use that 460 turbo as well? Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470457 Share on other sites More sharing options...
880joe Posted March 12, 2021 Share Posted March 12, 2021 460 turbo will work but you won't have as much torque with 400 file as you will with the 355/380 the torque comes from ecm setting as their are no mechanical difference in the 2 Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470469 Share on other sites More sharing options...
brettj3876 Posted March 12, 2021 Share Posted March 12, 2021 (edited) Instead of OEM injectors look up KS fuel or rochester diesel. Ks is cheaper than rochester. That's the way I'd go if wanting more horse. Leave maxi file in it. It produces a more usable power band than say a straight 460 file. If upgrading the turbo look at the yt467 or s475 BW Personally i like the big S475 1.32A/R. It's a tad laggy off the line (not too much) it pulls good down to 1300 and up top 1500-1750 rpm is where you see the advantages over the smaller turbo Edited March 12, 2021 by brettj3876 Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470489 Share on other sites More sharing options...
Heath Hill Posted March 13, 2021 Author Share Posted March 13, 2021 Thank you both very much I'll look into this. Hopefully this works out well. Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470503 Share on other sites More sharing options...
brettj3876 Posted March 13, 2021 Share Posted March 13, 2021 (edited) The s475 turbo i suggested is 600-700 brand new from Borg Warner. But you do need bigger injectors to run it. Stage 2 or 3 from rochester would work good with that setup. Or call k&s and ask what injectors they would use for the setup On a 93 with stage 2 injectors i see 42psi with that turbo from 1400-1750ish before it starts to drop off Edited March 13, 2021 by brettj3876 Quote Link to comment https://www.bigmacktrucks.com/topic/66219-300-mack-460-injectors/#findComment-470561 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.