Hey guys wondering if some one can help. I have a 13 b t11 streetport w/ rotaryshack oer sidedraft carb and hybrid turbo. I have a holley blue ful pump w/ a mallory fuel reg. Part #4309
Well when I start it my wide band reads in between 11 and 12 but when I drive it, it jumps up to 15, 16. I have my fuel pressure set at 5psi and when I rev it up it does rise so I have no idea what it could be.so if any one can help please do .thanks

 

Why don't you contact rotaryshack? Does your fuel pressure rise with boost pressure?

 

your jetting?

 

That fuel pump could be falling on it's face when the boost pressure comes up, they aren't meant to be run over 7-8psi.

 

I think there f11 119 I think but once it stops raining ill make sure

 

i told him that

 

they are F11

 

Ya I'm going to take it back and get a mallory. which one should I get is there a sertain one that I should use

 

its gotta be an EFI style hi pressure fuel pump, msd, walbro, Bosch will all work.
come on Joel, i told you this already

 

You told me the holley blue would work because I'm not pushing any boost due to a fresh rebuild. If not my bad I miss under stood you then . But I did fix my fpr problem I had to run a hole new. Return line.I tried calling you and I left a message but no answer so the form was my only resort

 

Well I replaced the fuel pump with a walbro and I've replaced the fuel filter and its still doing the same thing .

 

Post a picture of the carb hat.

 

Well I wish I could my computer been down for a while and I've been useing my blackberry and I haven't figured out how too.
But did you have to change you fuel supply lines to bigger ones.