Supporting mods for 500 awhp needed

[garputo2]

I have gotten everything under control I believe. I am getting the dsmlink v3 I have maf 3" 20g frank level5 td06 external waste FMIC but what I am deciding on is the injectors for around 500 hp I am looking at something like 850 cc injectors can I use larger injectors and control them with the dsmlink or should I stay with the 850 cc maybe I was thinking I need to bump to the 950 but not sure. What else can anybody think of I also have hks 272 cams stock springs new stainless steel valves but was told I might be ok with the stock springs I maybe willing to upgrade the springs if they have to be but would rather not if I dont need to. I also have ARP studs and MLS gasket 55.00 mm I believe

 

[stroked_AWD]

If your shooting for that kind of hp then i would go 1000cc's or better just to be safe link will be able to control them. What kind of turbo setup are you planning on running?

 

[garputo2]

a 20g frank level 5 wit htd06 housing. I have a walboro 255 but will I need a new fuel pressure regulator to use it or will I be able to control that via the dsmlink? I did some research and I am not sure but I think i should possibly shoot more for like 450hp easier to work with but still not sure on the fuel pump. I am going to be using a external wastegate with the 20g and I think I will need a boost controller also

 

[LocknessMonster]

2x what Stroked_AWD said about the injectors, go big you can dial them back with the link. Do you have a built bottom end or stock? Its easy to make power with these motors just make sure that you have the driveline ready for the beating. Good luck with the build.

 

[richard33]

You need a pump and a fuel pressure regulator. You should also look into 1600cc injectors and if there is e85 available in your area. Youre not gonna make that much power on pump gas. I have a 2g GST on a 16g with a walbro 255 pump, 1600ccs, DSMlink, and a Aeromotive FPR. I run over 30 lbs of boost with no knock and a pretty aggressive tune. Plus, its like 2.30$ a gallon!!

 

[stroked_AWD]

I think you should upgrade your springs and your retainers too man you dont want to float a valve man. Do a search on stock springs and see what you find.

 

[1gDSM4g63]

Wow... 500 awhp is pretty far-fetched plan with what you have. A turbo ain't all to it. You need to rebuild your block. And I don't even know how many lb/min a level 5 20g puts out but if it puts 50 lb/min+ you do need new valve springs.

 

[my4ATEurV8]

the 255 walboro will be just about strung out pushing enough fuel for 500hp. i would run a walboro in the tank and another one in the line for a 500awhp which is over 600 at the crank. that will ensure you don't run out of fuel in the upper rpm range and go too lean. get yourself a wideband o2 sensor/gauge so you can monitor you air/fuel ratio for tuning. get a reliable known boost controller and boost gauge . you will need an afpr to control the extra fuel pressure. get yourself an aftermarket fuel filter as well because the stock one is very restrictive. i would definetly upgrade to higher end springs for your head with the 272, it's just a good idea and an insurance policy for your pistons.
as far as your injectors go, if you want 500awhp, thats around 625 crank hp. (i think)
you will need at least 1032cc/min at .80 injector duty cycle. so order yourself 1050. i would get 1250cc injectors just to give you a little head room. v3 will control them without a problem!
the stock 4g63 rotating assembly has handled upwards of 600hp in other dsm's, but that doesnt mean it liked it! for your goal i would go with the cheap eagle rods and wiesco pistons with stock crank.
i have an act2600 clutch kit you can pm me about if you still need one. there are tons of other clutch options for our cars out there as well. just depends how deep your pockets are.
this should get you pointed in the right direction. hope it helps.

 

[stroked_AWD]

And your 20g isnt gonna cut it for 500hp so i would look into that a typical 20g flows 44lbs/min.

 

[my4ATEurV8]

And your 20g isnt gonna cut it for 500hp so i would look into that a typical 20g flows 44lbs/min.

+2 look into holset turbos. just type holset into the search and get ready to have your mind blown. an hx35 would easily make 500awhp with a taistfully modified car

 

[stroked_AWD]

Also I would look into getting your tranny build, 500hp on a stock tranny is alot.

 

[eclipse gsx]

nice setup hopefully it lasts

 

[garputo2]

The frank 5 level 20 g is up there either way top is 500 I will probably be happy for anywhere between 400-500 but wanted to get a idea on injectors The setup I got will make a holset a easy swap once the turbo is hatched

 

[burkgonzo]

Well good luck with your quest. Hopefully you have done a basic check of your engine before running these 1000cc injectors and all the bells and whistles.

 

[1gDSM4g63]

I recall the level 5 20g puts out 48-49 lb/min so it have to be tuned superbly to make top 500 awhp. That means you'll need everything to take it to the next level so staying of with stock valve springs is not going to cut it.

 

[garputo2]

Thats understandable what I will do then is have it tuned down I will run 880cc injectors with the dsmlink and try to run about 400hp then when its time to get to 500+ I know I need to get some springs and a holset and possible another fuel pump

 

[dsmcurse]

i agree that a 20g aint gonna cut it to do 500hp. its not impossible, but kinda unrealistic for the guy at home building outa his garage. my opinion on injectors is 1600cc is ridiculous. your never gonna see that much duty cycle to need those huge as @#*^ injectors. that big would require lots off corection to be pulled. im very confident that 900 cc or 1000cc injectors powered by a rewired 255lph pump witha quality regulator and gauge could easily suport 500hp. maybe save some money on not buying the huge as hell fuel system u dont need, sell the 20g for a decent price and pick up a holeset hx-40 for cheap. i promise you ya wouldnt regret that. dollar per power ratio NOTHING beats a hx-40.

oh and new springs is a must. i too have 272 cams and the extra lift requires stiffer valve spings. you might think " oh well, i just wont rev it out all the way " dude, you'll get greedy. trust me. drivin with the cams and the big turbo the car will jus be beggin to get hammered on. and its hard to say no to that right? the stock valve springs under high R's will squish together so far the coils will touch. the upgraded valve springs have less coils. take a stock one and a crower spring and squish them together the same amount and a stock spring will have its metal touch metal way befor the after market spring. theres less coils in the aftermarket spring alowing them to compress further. plus there obviously made from better material. the titanium spring and retainer kit aint terribly expensive. its a must investment when working with the bigger cams. people dont put huge turbos on with no intercooler. so puttin big cams with no springs wouldnt make sense either. good luck.

 

[GRAVEDIGGER]

garputo2, in your second post you say "I am going to be using a external wastegate with the 20g and I think I will need a boost controller also" This kind of statement leads me to believe that you really don't know what you are getting into. You have some serious goals, but I don't think you have done the homework to pull it off. Take your time, understand what and why you are doing what you're doing, and don't get in over your head. This is just my opinion, so don't take it to heart. I just don't want to see you disappointed. Nothing worse then having to redo things that could have been avoided with proper planning.

 

[2gGSX]

garputo2, in your second post you say "I am going to be using a external wastegate with the 20g and I think I will need a boost controller also" This kind of statement leads me to believe that you really don't know what you are getting into. You have some serious goals, but I don't think you have done the homework to pull it off. Take your time, understand what and why you are doing what you're doing, and don't get in over your head. This is just my opinion, so don't take it to heart. I just don't want to see you disappointed. Nothing worse then having to redo things that could have been avoided with proper planning.

I don't see what is wrong with his original statement. You can only shove so many springs/shims into an external wastegate.