Tonyrodz
Resident Resident
I'm lovin' it!! And super jealous! Keep up the good work Red.
Rocket Man's 02 Denali Build Thread AKA "THE BEAST"
- Thread starter Rocket Man
- Start date
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OP
OP
My injectors flow at 50 lbs/hr and I just found some Delphis that do 72 lbs/hr for less than $400. I wonder how much boost I could run with those? I data logged and sent out an email to Justin @BB with some questions about injectors and boost. New pulley is $150 for the Whipple so I want to do this only once. I'm guessing that if I can run 9 lbs of boost with 50 lb/hr injectors (that's the max that Justin said I could go without bigger ones) I should be able to run 14 lbs of boost with 72 lb/hr injectors. BTW I changed my gauge to read boost digitally and todays runs I was only able to get 6 lbs with my headers and cam opening up airflow. I figured I'd lose that much since that's what happens when you decrease the resistance( I was getting 8 lbs before). The power still went up for sure but it also opens up the possibility of even more power with added boost. So I could go down to a 2.75" pulley from the 3.75" I have now with the bigger injectors which should net me 14 lbs of boost. That's the smallest pulley Whipple makes for my application. That should make for some serious power. I'd like to end up around 500-550 hp.
OP
OP
I'd like to take a moment in this build thread to express my appreciation to some people in the industry who have gone way beyond what's considered good customer service after the sale. First and foremost is @BlackBearPerf who have helped me countless times and continue to do so with my tunes, as well as helping me even on a weekend when I was having a rough time installing the blower, which I bought through them. Next is Roger Vinci @Vinci High Performance who I bought the cam, valve springs, and pushrods from. Roger has helped me both through e-mail and the phone when I had questions about installing the parts myself. He even helped me when I had a question about the roller rockers last Friday even though I didn't even buy them from him. I felt bad asking him but he wasn't worried. He helped design the Yella Terra series of rockers. And he just emailed me to ask if things went OK with the install. It's Sunday. And there's Michael Malicoat @Whipple Superchargers who also helped me after hours through Email when I had a question, and when I was having problems installing the blower he overnighted me the parts I needed to reinstall it and walked me through the install. I Emailed him yesterday asking whether the fuel rails and injectors could be removed without pulling the blower and he just answered me. He said yes, with patience. It's Sunday. There you go- three companies that I highly recommend. These days we're lucky to get any support at all, so to get this kind of service, I felt that they should get a shout-out.
Tonyrodz
Resident Resident
Absolutely! I feel customer service is 90% of the sale. If I had better/any customer service from Speed Engineering, I'd recommend them with no problem, but that wasn't the case. Customer service speaks volumes!!
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OP
OP
I decided that I'm not going to buy new fuel injectors at this time and instead I'll spend that cash to re-gear from 3.73 to either 3.90 or 4.11. I should be spinning all 4 tires at takeoff right now and I think it's because of my 26's- they effectively changed my gear ratio and now it's too tall. So I ordered a 3.375" pulley (I am running 3.75" now) which should get my boost up to 9 lbs which is what BB said I'd be safe at with my 50 lb/hr injectors. I can always revisit bigger injectors and more boost at a later time.
Countryboy07
Full Access Member
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- Apr 17, 2015
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If your going to go through the the work and money for a gear swap, I'd go like 4.30. 3.73 to 4.10 would be a very small change.
Also, the Denali sounds mean!
Also, the Denali sounds mean!
#1taho
5150TAHO
Great job on doing it all your self. That's a great accomplishment ! And it is mean I
bottomline2000
Full Access Member
Your truck is looking right Red. It's a combination of the 26's, torque management and lack of a stall. Gearing would definitely help since you probably have a pretty tall tire. Has Justin sent u a tune update for the cam? Mine has a noticeable lope to it.
Sent from my SAMSUNG-SM-T377A using Tapatalk
OP
OP
Crap. I waited 2 days for Justin @blackbear to let me know about my injectors/ pulley size/ boost and of course an hour after I ordered that pulley he emailed me to say that the 9 lbs of boost that was safe for my injectors was 8 lbs before the cam and it's the volume of air I'm moving that's the problem. In other words, I can't go to 9 lbs with the new cam. I can only go 1 more lb, to 7 which isn't worth the $150 pulley. Currently, though, I'm waiting on some tools to be delivered that will hopefully allow me to remove the one bolt that I can't get out yet, it's a 4mm allen head that's under the blower housing on the passenger side and nothing I have will get to it without pulling the blower assembly. It's one of the 4 that hold the fuel rails down, which need to come off in order to swap injectors. I have a line on some 72b/hr injectors for $400 and I don't have a problem with buying them, as long as I can install them without pulling the blower.
