NAAllTheWay

okay so im lookin at either getting a aluminum 383 ls1/ls6 stroker motor or a 6.0 iron block 408....i know the 408 will make more power but i was just lookin for some input on what you guys would do? i have to run a ls6 intake and patriot stage 2 heads that flow 296 at 600 lift. i know iron will make more power but it will also be heavier.....just lookin for some all around performance and that includes handling power and also looking for axhaust tone.....i figure some people went with one and maybe wish they did the other......anyone and everyone who is willing to share their opinion, it would be greatly appreciated, thanks in advance

NAAllTheWay

also will the chev. 6.0 block be 100% compatable or will i need to do some modifications? its from texas speed if that makes any differnce.......its supposed to be a ls1/lq9 replacement. thanks

litle88

iTrader: (20)

Just get the internals forged, the best cam for your set up some Trickflow heads (even the as cast version MILLED of course to a 11.5 to 12 comp) a FAST intake and a little spray. Then just drop that bitch in there and enjoy it!

NAAllTheWay

minus the spray, bc i dont want that......if i got some sick heads and a big cam, upped the stall,......maybe make more power that a 383 with a big cam? im just not sure what to do here

NAAllTheWay

i still want to keep the origanal topic up for dubate......but say i got like a ms4 cam, amazing heads and a 4000 stall with a 92/92 setup, what kind of power can i be looking at the wheels, i have full bolt ons.........and would that be more power than the 383 with the patriot heads and ls6 intake?

First Collision

iTrader: (13)

You will more than likely make more power with the MS4 and a set of TFS or AFR heads than you will with the 383 you described... Depending on if you mill the heads or not, you may have to flycut, where as if you ran a 383 you could get pistons with proper valve reliefs and be good.

I would do an iron 408, though.

sroach20

iTrader: (31)

the 383/408 will give you power throughout the entire power band, not just top end. i would go 408, ive got an lq4 with l92 heads and it hauls ***.

NAAllTheWay

cool thanks....any hp and tq estamates on a 383/408 with ls6 itake and 296 flow rate heads with a proper cam?

litle88

iTrader: (20)

You with a set of killer heads, cam and intake you will definately be over the 475 hp mark! I made 457 with my mods stock bottom end and stock cubes. You will have a **** load of torque though. Goodluck

goober35

iTrader: (1)

The added power will more than make up for the extra 80lbs that the iron block weighs over the ls1.

You can also pick up a set of bad *** prc heads like these. http://www.texas-speed.com/shop/item...d=697&catid=40

Just ask them to set you up with a 408 with prc ls3 heads. I bet you could make well over 500hp.

litle88

iTrader: (20)

If you want SMS badazz heads cheap, call vengeance and get you a set of TRICKFLOW as cast heads for 1600.00 and they come assembled with springs good for .650 lift! You can't beat that.

9secondsflat

ditto, call Ron at vengeance...they set me up...my little 383 is making 532/472 to the rear.

NAAllTheWay

nice numbers 9seconds........the only problem is im on a budget of 6k and i really cant go a dime over....need a new timing chain/oilpump/gaskets/cam/gas to pick it up/motor....da da da.....i did all the math without heads or intake and it came to like 5900 after tax......so yea ill do heads but its gonna have to wait a year. for now the 296 flow rate heads and ls6 intake is gonna have to do....so with that being said any idea on the whp ill be puttin down with the auto for 383 and then the 408? and is that iron block going to be 100% compatable? thanks guys

NAAllTheWay

and is the iron block really only an extra 75 pounds?

NAAllTheWay

and how about plan B....just getting a set of heads like goober put up with nasty cam, fast 90/90 and bigger stall? maybe id make close to the same power and save a little $$$$?.....sorry a lot of questions but i appreciate it thanks