EX1

I haven't been posting much here lately so apologies to some of my Corvette friends

I have been enjoying my F1R build and certainly enjoying the 900+whp that came with it. I was however caught in hard place in terms of power level. The cars I run around with here in West Texas, as well as the classes I placed in during TX2k and other roll events, always had me in the bottom of the 150-155mph pack. I always ran quick enough to have fun, but was always coming up short in the MPH to actually place. The F1R was simply out of air on my 431ci LS7 and was petering out a little after 6krpm. The car previously was a H/C/N build so I reinstalled a full bottle and BAM, along came an extra 125whp and loads of torque. This was fun but what wasn't fun was having to change head gaskets after each event. I think the added cylinder pressure from the nitrous was just too much for my 4-bolt motor and LS7 heads to handle. I would always end up pushing a bit of water after a hard nitrous pull.

I made the decision last month to just bite the bullet and do a LSx block and some 6 bolt heads. The problem is, who in their right mind would do that and not just go F1X as well? The F1R sold lightning fast and the car is already having the motor removed as we speak. Scoggin Dickey's (SDPC) brand new machine shop will be assembling the short block and re-using my previous rotating assembly that saw less that 500 miles.

The fuel system is already complete and way overbuilt for E85. I am thinking of going flex fuel while the car is down. Being able to run 91 octane in emergencies is nice IMO. I am already using an RPS triple carbon clutch as well so that is taken care of. Which head stud kit do you guys recommend?

I will try to keep you guys updated as I did before. Power goal is 1050-1100whp. Before anyone asks, NO the car is not at AMP unfortunately (yet). We'll be doing the R&R of the long block here locally and then I plan on taking it there for the tuning and other fun stuff like belt alignment .



PARTS LIST (UPDATED 4/13/16)

SHORTBLOCK

• LSX block
• 427 ci
• Dragonslayer crank
• Callies Ultra H beams
• Wiseco -18cc pistons with optional pin upgrade
• Approx 10.0:1 compression
• Clevite bearings throughout

TOP END

• Brodix BR7 heads with WCCH porting
• Ti intake/SS exhaust valves
• Morel link bar lifters
• PAC springs and GM LS7 rockers
• Cometic .040 head gaskets
• ARP head studs
• Blower cam (239 25x .660 .65X on a 116)
• LS7 ported intake manifold
• LS7 90mm TB

MISC ENGINE

• Katech C5R Timing chain
• Katech valve covers powder coated black
• Katech coil relocation kit
• GM coils with MSD wires
• ZR1 A/C compressor
• ZR1 MAP sensor

COOLING

• Dewitts shortened radiator with dual SPAL fans
• LS6 water pump
• Custom oil cooler from AMP
• 160 t-stat
• ALKY Control Meth kit

BLOWER RELATED

• Procharger F1X - polished
• 4.125" pulley - could change
• Procharger "race" spec intercooler
• Twin Tial 50mm BOVs
• 10 rib IW balancer
• 10 rib DP direct drive
• 4.5" intake DP Big Mouth with 4" filter
• DP "S" discharge pipe
• DP "J" head unit bracket
• Procharger bracket stands

EXHAUST

• ARH 2" longtubes
• ARH 3" x-pipe
• Akrapovic SS axle back
• Akrapovic bi-modal switch

FUEL

• E85
• ID2000 injectors
• Powder coated aeromotive rails
• In tank Walbro 450lph pump
• Magnafuel 750 external pump on a hobbs switch
• Magnafuel external fuel filter located in driver's side fender
• Vibrant regulator
• New lines throughout

DRIVETRAIN

• RPS billet triple carbon clutch
• RPS billet aluminum flywheel
• Hinson motor mounts
• GM master and slave cylinder -back to OEM from Tick master

SUSPENSION/WHEELS/TIRES

• Vi-King dual adjustable shocks
• 17x11 Forged Weld RTS rear wheels
• 325/45-17 M&H Racemasters

MISC

• Caravaggio "race" seats in leather with Z06 embroidered
• Katech carbon fiber rear spoiler
• RSD 4pt rollbar powdercoated yellow - optional diagonal drivers bar
• OEM headlights satin painted bezels and gloss rings
• Crow 5pt harnesses
• Dashlogic system
• Zeitronix ethanol content analyzer
• 40% smoked taillights (done the right way)
• VMS tow hook

schpenxel

Sub'd!

C6 Curtis

Very nice but why didn't you go turbo?

EX1

Simplicity really.

I already have everything required to support an F1X from my previous build. I have also never had any supercharger related problems and love my Prochargers. The X is capable of meeting and GREATLY exceeding my goals. I love being able to change a belt in 15 minutes if I have to, and even being able to pull off the whole head unit in 20 minutes if I take my time.

Just different ways to make power for different people.

Detoxx03

I can't run you now lol. Gonna be agrest build man.

SquirrelyNutz

Gonna see you at TX2K right? Look forward to running the new setups!

EX1

Lets hope so. I had a lot of hiccups with my last build. You still rocking the D1 on the LS3?

2K is always the goal for the car but I will likely being cutting it close. I will be down there regardless as a sponsor.

Detoxx03

Yep still pimping that D

neverstop

sub'd for results!

surprised you were pushing water at 1kwhp also, seems interesting to me some guys are able to get 1,300whp on nitrous out of 4 bot setups like ace32x and then other guys push water at 1k or even lower somtimes. LSX should fix that for sure and the guys at AMP have always been great in my interactions

SquirrelyNutz

He didn't make 1300whp on 4 bolt. Believe the most he got on 4 bolt and nitrous was ~1100whp.

SHovV

Isn't that ace32x car a LS9 / ZR1 also? I would suspect the stronger, thicker head deck would contribute greatly to it's resistance to flex under pressure

turbotuner20v

Call bob for the best new procharger prices over the phone

http://shop.brutespeed.com/ATI-PC330...PC330A-001.htm

White_Lightning

so you are doing what i suggested before your first ti?

welcome to the f1x club

EX1

I know the deck thickness of an LS7 head is only ~.4". I think this has a lot to do with the issues I had.

Glad to see you are still around Jeff. I had feared you had sold the Vette and moved on already! This is the second time I have heard about Brutespeed and pricing since yesterday. Looks like I will be giving them a call.

neverstop

I dont' remember the exact numbers or what it put down as i know he was also slipping the clutch but i thought it was like 900whp on blower with two big stages of nitrous, so should have been well over 1k whp, there are guys on yellowbullet going deep 8s I think on 4 bolt iron blocks too. wasn't Arun's 8 second ls6 build a 4 bolt setup too? it's just interesting to me how much power some guys make on 4 bolts where other guys push water at 35% lower power is all.

schpenxel

It would be interesting to see how some of the setups compare torque wise. Some could just be going too aggressive on timing too which would lead to some high cylinder pressures.

Not saying they are, just an idea.

SquirrelyNutz

When it was at that much power he had the LSX and Mast heads. It depends on a lot of things, how the heads were put on, what studs, deck thickness etc. Would imagine bigger bore would make it harder to keep it from pushing water too.

EX1

I would likely of left the car alone had I not had an issue pushing water haha.

I wanted AMP to do most of the work but I know they are slammed right now and moving locations.

Power adder type is big as well. I would think turbo cars would be able to make more power on 4-bolts due to the big power required to drive a Procharger.

EX1

Anyone have any thoughts on the PRC 285cc heads?

Detoxx03

Unreal runs them on his YSi setup and likes them.