ranedoss27

iTrader: (4)

The goal is 900-1000 whp on 93 pump gas and I need your input on my setup and if I can make it

408ci lq4 full forged internals 9.1:1 comp
317 heads p&p with arp studs and ls9 gaskets
Ls6 intake and ported TB
232/238 .595/.605 115 (was used with my old procharger)
FI's s400sx-80 et-r HO

Is meth necessary and do I need to swap cams?

This is through a tranzilla 6 speed and moser 9"

Slowhawk

iTrader: (12)

Won't last long on pump gas at that level. Maybe 1-2 highway pulls.

I make 1000rwhp with 93/meth. After 1 season of racing 1/8 miles (500 miles tops)the heads were lifted on 4 cylinders.

mrstepheneades

Making 2 psi more than I did on my 755rwhp pull on a stock ls1 with cam on pump 93 and 100% m1 methanol. Stock bolts, and everything. I believe 1000rwhp on pump and meth is very doable. Run twin 10gph or twin 15gph meth nozzles and 100% meth and I think it will be fine. Im no expert but I have 1500 miles on my 20psi ls1 setup I know making over 800rwhp now on only 93pump and meth. 4th gear 100+mph burnouts all day long. My info is in my sig but I have twin 10gph nozzles using 100% and they come on full force at 7psi. AFRs stay 11.2 or lower. Timing 14 degrees. The s480 gonna kill compared to my s475 though. Should make a lot more power. And a 408 to top it off lol.

Sarg

iTrader: (6)

I will let the cam experts critique your cam. As for the meth, I would say yes. Your compression is not terribly high and the rest of the motor should flow well. I would say it is possible. Keep timing and air fuels conservative though and sneak up on it

ranedoss27

iTrader: (4)

I figured I would need meth, I know the majority of guys on this forum use it but it seemed like most were with 91 octane and I wasn't sure if having 93 would help a little bit. I know I didn't put it in the original post but obviously I will be running an A2A intercooler

Sarg

iTrader: (6)

Why not an air to water. You can get the frozen boost kits cheap and they work great. Mine at 15 psi is only around 20 degrees over ambient. And at the track you can ice it down easily.

ranedoss27

iTrader: (4)

I've never really looked into a2w bc I always assumed that was more for track only cars. My thought was the less external systems (i.e. multiple pumps, meth or a2w coolers) the more reliable the car would be on the street. I was thinking about running an extra fuel cell with race gas and having a higher boost tune to achieve that 1000 whp goal

mrstepheneades

Might get away with a cheap cxracing ebay one if not pushing much more than 1000rwhp. Other than that treadstone would be my next pic for affordability. I have the ebay one though. A2A we are talking about here.

ranedoss27

iTrader: (4)

I had a cheap eBay one with my procharger and it worked great. I was going to purchase a treadstone this time around

ranedoss27

iTrader: (4)

Also in terms of the turbo setup, I was going to use 2.25" merge piping with a 4 or 5" down pipe dumped out the bumper. I'm hoping for decent spooling by 3500 rpm

mrstepheneades

Mine is 2.25 or 2.5 cant remember but with my 96mm turbine s475 but my spool is 5psi at 3500 and full tilt at 4100.

ezstriper

don't think going to work well on 93, will on E85...

Punisher_ws7

iTrader: (6)

i made 800 on 17psi with 93 and 100% meth through a 4l80e and 80lb injectors 10/15 gph nozzles from alkycontrol

Forcefed86

iTrader: (4)

If your going for a pump gas car with aftermarket internals why not drop the compression down? You take a 4% hit on total power with a full point drop in compression. 8:1 would allow much more boost to be run on 93 and not cost you much power.

I'd sell that cam too...

cory32690

Custom cam and nice meth kit I think u can make the number on pump gas keep timing low and make sure fuel system is up to par have Martin spec you a cam...get the nicest air to air you can afford or get a cheap air to water keep those iats down and let it eat good luck

mrstepheneades

Pinned gate yesterday and I change my earlier statement. 10+ psi by 3500 now. But that's uncontrolled boost pressure on full kill mode.

Forcefed86

iTrader: (4)

You need an inline grainger valve set to the boost pressure you want to run. It will not allow any pressure to the gate until your set pressure is reached, Then the valve opens and allows full pressure. Acts just like having the gate pinned shut until your desired boost level.

they are easy to make.

stevieturbo

And on top of that, dont be afraid of boost. But do not get greedy with timing.

And buy a good quality intercooler.

mrstepheneades

I just have a little brass lever right at front corner of my seat near middle console that I open to pin gate then when I shut it back off its back to whatever I got boost controller set at. Its just a quick bypass around controller. I don't need any faster spool for my needs. If it is ever tracked I have a two step setup for that. Just done my little lever setup on it so when I take it to Tick soon and unleash hell on the little factory ls1 and drive train I don't have to switch hoses around to pin the gate closed. I don't know what the stock everything with only cam swap record is but I'm going for it. And on pump gas/ meth too.

ranedoss27

iTrader: (4)

Would running meth injection and a water to air intercooler be overkill?