have a chance for around $2,500.00 more including all labor, etc., to put myself in a hopped up LS2 402 stroker with TRick Flow Heads and pretty mild cam making 550rwhp and very new and in great shape. Of course all the internal motor components are forged and I should be able to FLOG this motor all over the street, road racing and some drag racing.

I have a D1SC ECS blower kit on my stock motor that has 8000 miles on it and has been EXTREMELY RELIABLE although I find myself not having the confidence to FLOG it HARD for an extended period of time liek when road racing (which I want to do more of) b/c I am on a stock shortblck and at 10:5 to 1 compression motor is not very f/i friendly and allthough I have had 0 issues I am a little uneasy to flog her b/c of the stock motor and high compression with the blower making around 10lbs. I want to do more ROAD RACING this season but not overly confident on a stock motor via the BOOST!

I believe I will happier with the N/A 402 LS2 that is making BIG POWER with the TRICK FLOW 225 heads and has powered an f-body at 10.3 at 136 mph (so 550rwhp on the dyno on that motor is backed up at the track).

Now if you were sitting in my shoes tell me what set-up you would rather have. This 402 N/A beast with VERY STREETBLE cam or my current set-up on my stock motor.

I am on the fence with this decison so I want your opionion what you would prefer vs. saying it all depends on what i want. I want your objective opinons on preference of set-ups if it were you choice b/c i already know what my preference is but not sure if i can justify the extra $2,500.00 (But your opinions will help me decide).

THANK YOU and for your patience for long post also!

 

Since u want personal opinion this is a no brainer to me NA all the way. The LS2 is forged and making 550rwhp all motor. This means if u ever get bored with that 10 second NA car u can just throw a bottle on there A s/c stock motor is not good for road racing, those sustained high rpms will not be accepted forever with that stock motor. I say spend the $2500 and never worry about the thing, plus its all motor Thats just my lil ole 2 cents though. Either way thats one bad SOB.

 

I'd have to agree.

Nothing like a well built LSX all motor car....except for one on spray.

 

I'd rather pay the $2,500 and have piece of mind knowing I can beat on it all day long and not worry about it breaking, within reason. More versatile, less things to worry about (supercharger oil, maintenance, belt slip, etc) and can perform in every which way you're wanting.

Not to mention much more room to grow if 550rwhp naturally aspirated bores you, lol. 150-300 shot would probably be enough to satisfy anyone's urges for more power.

All those things aside, the sound alone is worth it.

 

I agree with the above posts. Also, if you are planning to do any bracket racing the N/A engine will be more consistent. Good luck.

 

A no brainer the forced induction motor all the way............................................... .........just kidding.

 

^^^^^
I agree!

 

N/A ftw

 

I've had the exact same scenario happen to me.

I sold the FI setup.

Blower + stock motor = BOOM sooner or later.

Built NA motor = If you want to go faster, put a 200-shot on it

 

Very, very nice times your 408 with that smaller cam is making. This motor I am about to pull the trigger on also makes the most power with a smaller cam very similar to yours!
Those are N/A times your running 10.53 at 131 correct.

What compression you running on that bad boy!

 

Yep. 11.8:1 compression. LS6 heads that have been milled and using JE flat tops with valve reliefs.

The reason the cam works is because if you look at my sig, it's been installed 4 degrees retarded to make up for the lack of duration. If you installed it as-ground with 4 degrees advanced, you wouldn't have nearly as much high end horsepower and the cam would probably peak before 5500

Mike

 

YEAH, I just needed a little shove to be pushed over the edge! IT'S DONE and thanks guys!

550rwhp LS2 Trick Flow headed 402, RPM Level 5 M12 tranny and new TEX 0Z700 Clutch are all going into my baby this next 3 weeks!

 

what sort of drivetrain upgrades do you have to do to a vette when you get in the 500hp range?

 

Depends how hard you are going to drive it, DRAG RACING lauches, etc., but the usual is the clutch and hardened out put shaft on rear end and DTE strut Brace on rear end.

 

Thanks for the response I'm trying to figure out if I want to keep the cobra and just get one of the new whipple 3.4l blowers or get a c5z or c6 so I'm just trying to get all aspects of it.

 

I have to tell you though the drivetrains in C5s are not that strong and are the weak link to 500rwhp+, when drag racing and launching with slicks. I have found that out the hard way on a 500rwhp auto C5 that fragged the tranny case, rear end at the drag strip on et streets!

 

i'd still stay forced induction, just go with a LS2 block or Iron and go down one pulley size with the D1SC.

 

That's not an option I want to do right now the only options right now I am considering is keeping things jsut the way they are or doing the swap for this particular 550rwhp Trick Flow Headed 402 LS2 that is making big power and runs consistent 10.3 on a MANUAL TRANNY on a 3400 race weight Z28!

 

Thats one sweet setup u got planned there. Hope to see some results after your done. Should be one mean Z06 especially all motor

 

i read somewhere you decided not to pull the trigger on this set up due to comp(12:1) bein a lil too high. dont give up!

well here's wut i did, might take a lil bit but who cares.

i took off all my mods
bolt ons
heads
cam
injectors
timing chain
pushrods
valvesprings
etc

and i sold it
i took all that money and put it in the bank and used it towards my new motor,fuel system,headers.
i already had the fast. now im jus waitin on the motor so I can put it in. here's a pic of the guy who's helpin me do everything(the one thats bein carried)