What would it take to run 12's in a mark viii? My set up will consist of..... C heads forged internals cobra intake vortech 3:73 gear LSD JMOD tranny cooler of course a good tune, that should do it right? I see there is a lot of hate on other forums for the mark viii, they all act as if I'm living a fairy tail to own a 12 sec mark, so what does it take?
That should get you 12s. If it doesn't there is a problem.
With that said, the forum you were on was feeding you bullchit and/or is full of a bunch of snobby people that don't give a hoot about the Mark8s and are obviously uneducated. Every Mark VIII that has a blower and supporting mods(gears, stall,exhaust,tune, fuel system upgrades) will run AT LEAST 12s. If your motor is forged, it has the integrity to be able to withstand even more boost and rpms. Put a smaller pulley on that car with a good tune and it should be working its way towards 11s.
I am picking up a Vortech Mark8 tomorrow and consider it a very very mild setup at this point with a very safe tune with mild timing, log manifolds and stock torque converter and it still pulled off a 12.9 @114 mph slugging like hell off the line. I'll have it in the low 12s by the time I get a stall converter and headers on it. The trap speed is definitely there.
Are 4:10's ok for everyday driving?
Just fine. I run 4.30s in my all motor Mark8. 4-speed autos with overdrive are a good thing.
How the hell are DLF and KStromberg running 13's then, and not supercharged? I'm not saying 12 flat 12.90 I'm happy! Hell 12.99 your still in the 12's
Cobra Intake
4.30 gears
3800 stall
JMOD
Kooks headers w/ full 2.5" exhaust
Mail order tune (manually shifting at 6600-6700 rpms because shift points were too low)
255-50-16 ET Streets and dead hookin'
Neither DLF or I ran 13s until we swapped over to the Cobra intake. I have yet to see a Gen2 with bolt-ons run 13s on the stock intake. It is a far worse design than the Gen1s and was a huge restriction in our setups. I picked up a half-second from the intake alone and ran a 13.59 on a mail order tune. I am now dyno-tuned and shifting near 7K rpms and am quite certain it will run low 13s on slicks. The common reason for a Gen2 NOT hitting 13s is fear. As simple as that. People fear the gear, fear the stall, and generally never mess with the intake because of the hassle factor. Those 3 things alone will keep a Gen2 in the 14 second range FOREVER.
DLF is running the following:
Cobra Intake
4.10s
3600 stall
JMOD
Kooks headers w/ full 2.5" exhaust
SCT Pro Racer package w/ datalogging capabilities (tuned by himself < the BEST way possible)
Custom Canton Oil Pan w/ windage tray
Underdrive Pullies
Drag Radials
He has a whole bunch of his bushings in the suspension also and some other things that I am sure I have missed, but that is the main go-fast mods he has. I'm sure he will be quick to correct me if I'm wrong though.
