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Posted by Duncan Motors (Member # 7045) on :
 
42 pound injectors big enough for a 351 , 10 to 12 pounds of boost?
 
Posted by racsirx (Member # 1710) on :
 
Depends if you want to max out the duty cycle with 42s, they now say 420rwhp is the limit for 42s, I have done 566rwhp with 42s

http://mustangpartstech.com/FuelInjectorMath.html
 
Posted by Duncan Motors (Member # 7045) on :
 
thank u again lee. that was gd read by the way.
 
Posted by SLOWSN95 (Member # 8269) on :
 
Jon, run 60s. Seen way too many HCI s-trim setups get cut short because the duty cycles were maxed with 42s. As for a 351w, You should expect the same thing. Better to be safe then sorry.
 
Posted by Duncan Motors (Member # 7045) on :
 
thanks man , im looking to buy som enow, if u know where a gd set is shoot me in that direction. thanks again guys, im being stubborn but im getting over it lol.
 
Posted by trickflow211 (Member # 8503) on :
 
get the 47s like me, they good over 650 hp
 
Posted by sneakyfox90 (Member # 9379) on :
 
quote:
Originally posted by trickflow211:
get the 47s like me, they good over 650 hp
+1 on the ford racing 47pounders
[patriot]
 
Posted by moeofit32 (Member # 10393) on :
 
I used 50s by msd cause I had the issue with 42s....problem gone
 
Posted by East Bay 50 (Member # 8081) on :
 
quote:
Originally posted by Duncan Motors:
42 pound injectors big enough for a 351 , 10 to 12 pounds of boost?
nope
 
Posted by racsirx (Member # 1710) on :
 
Lol, times have changed but for the better, 30lb and 36lb injectors were used for HCI and S-trim setups back in the day, even a Saleen S351 with a S-trim came with 42lb injectors. I don't see a point in getting bigger than 50lb injectors if you don't upgrade the fuel lines.
 
Posted by Duncan Motors (Member # 7045) on :
 
i remember that as well lee, but every tuner i talk to gets unhappy, i want a happy tuner thats feels gd about doing his job instead of bein a sour puss pushing me out th edoor. my fuel lines are upgraded, but only have one 255 in tank pump, and the vortech inline 255 pump as well, im hearing those only can support the 42,s as well, and then told they will be peaked on 50,s. im thinking 50,s would be ok then?
 
Posted by Duncan Motors (Member # 7045) on :
 
and thanks for lending your help again by the way lee and everybody else as well.
 
Posted by racsirx (Member # 1710) on :
 
quote:
Originally posted by Duncan Motors:
i remember that as well lee, but every tuner i talk to gets unhappy, i want a happy tuner thats feels gd about doing his job instead of bein a sour puss pushing me out th edoor. my fuel lines are upgraded, but only have one 255 in tank pump, and the vortech inline 255 pump as well, im hearing those only can support the 42,s as well, and then told they will be peaked on 50,s. im thinking 50,s would be ok then?
I believe a T-Rex pump is rated less than 255, that's why I used an universal 255 inline
 




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