JJz28

iTrader: (71)

Would it be possible to use a 6.0 stock crank, rods, aftermarket pistons? Bore the block to 370-372 c.i., balance the rotating assembly, add the zo6 cam or the old man stealth cam, do a mild port job to 6.0 heads,do a 3 angle valve job, add matching springs. through a good exhaust system and a good tune, make 450-460 streetable hp.( naturally aspirated.)
Thanks in advance for everyones input.

Chris@AP-Engineering

iTrader: (-2)

Sounds very doable to me. Give me a call if you need any help. Good luck with your project.

Vents

iTrader: (9)

yup. but you'll most likley need a bigger cam and some more CR to get those kinds of hp numbers.

Pro Stock John

iTrader: (34)

Are you going for a stealth approach?

VINCE

iTrader: (1)

With the specifications you mentioned 450rwhp is not going to happen in my opinion. Unless you use nitrous.

Scalpel

iTrader: (4)

Yeah, cam is WAY to small.

robertbartsch

..aren't some early 6.0 cranks different from 5.7 canks...i heard some earlier cranks dont interchange....

Flyer

iTrader: (1)

Yes .. they are. The early ones, same year as iron headed 6.0's, came with a longer crank to mate up to the 4l80e. After the aluminum headed 6's came out, they used a crank spacer.

BLK02WS6

iTrader: (2)

I'm doing one similar.

6.0L block, 6.0L crank, Manley rods, Diamond pistons, my LS6 heads that I already have (radiused for the 4.0 bore), and a custom ground cam (not huge, but not stealth either).

I will have 10.8:1 CR. I'm hoping for 425rwhp or so - depends on how the cam grinder did I guess - we'll see!

JJz28

iTrader: (71)

Yes, i would like to go this route if possible. I would like a decent idle and not have to change springs to often, also not have a problem with emissions here in Dallas. Thanks

JJz28

iTrader: (71)

I already have the block, crank, rods, a set of #317s. I need pistons and cam kit. I will do most of the work myself except for machining the block and valve job,. in fact i have two sets of heads, 2 blocks, 2 sets of rods. i am trying to sell some of it. I would like to get at least 450hp. with out juice.
thanks for everyones input, please keep it coming. i want to do it right the first time.

VINCE

iTrader: (1)

To meet your 450rwhp to 460rwhp stealth goal I am afraid you would have to go bigger than a 372ci. I suggest a 408ci. You would meet your horsepower goals and can use a small cam. You would most likely easily pass emissions.

JJz28

iTrader: (71)

Thanks
John

niphilli

I dont know guys, dont forget the great numbers that Tony (Nineball) had with his initial 382 all bore setup. I think he made 450 RWHP with a little 221/221 .558/.558 camshaft. I would bet that 372 could easily absorb a TR 224 on 114...With a good set of heads I think it might make 450RWHP ??

Scoobie

iTrader: (8)

why wouldnt it make 450 RWHP? With so many others making that or near that on cams smaller then a G5X2. Yes it will be difficult, but i bet he could do it with something like a TR224 114 and some great heads. Hell, with a matched intake to the heads, ported tb, electric water pump, carbon driveshaft, great tuning and a great set of emissions legal Long tubes i bet it could be done. Make your power in the heads

JJz28

iTrader: (71)

I have ported several sets of heads in my time and all of them have made very good power, I really think that with the right cam and the other things that i mentioned, such as a good exhaust and tune it could very well happen and on a lot less money than a stroker kit. thanks to every one that replied to my future budget build. Keep the sugestions coming on the proper cam i should use.

John

VINCE

iTrader: (1)

There are guys on this board right now with a 370-372ci NA setups. They have all the best parts. They all have a cam a lot bigger than you want and they make what you are talking about making. As for stealth? I doubt there setups are considered stealthy. Now I would be happy for you to prove me wrong. That would make life a lot easier for all of us. To give you an example:

"A particular 370ci motor has a 4.03" bore/iron block, stock crank, Diamond pistons, Lunati rods, Absolute Speed heads, and a Comp 242/248 XE-R and it put down 463rwhp/415rwtq with the NEW FAST intake. With the LS6 intake it dyno'd 456rwhp/410rwtq. "

Notice the big cam and Absolute is known to put out some impressive heads. You mentioned putting in the Z06 cam or one of the Stealth cams.. Compared to the cam the above user is using the Z06 cam is a baby cam.

monkeyboy

JJ, i think to maximize your N/A power, you would have to get a reverse split pattern cam. larger duration and lift on the intake side. since you have an M6, 112 lsa should be good on idle. i know you want streetablity, but if you get a nice size cam, it can be tuned to be livable.

Jason99T/A

iTrader: (21)

Vince, those numbers you listed above were through a Ford 9"/4.56s, 3.5" driveshaft, and 17x11 Fikse with some heavy-*** BFG tires. So, the setup is loosing alot through the drivetrain.

I do agree with the posts above that you can get away with a TR224 cam in a 37x ci. setup and still sound relatively stock.

VINCE

iTrader: (1)

Jason thanks for responding, but do you think a 370ci can put down 450 to 460rwhp with a Z06 cam or one of MTI's stealth cams even through a 10 bolt and 3.42's? If so, I will shut up.