Abdullah

iTrader: (2)

i want to install a stroker in my 1996 LT1 impala SS, which one to go with? a 383 or a 396?

i know the 383 will spin easier and maybe higher, which one will make more power for the same heads and cam and every thing else being equal?

i found a 383 1-piece stroker kit as low as $750 balanced. will i get a 396 stroker kit in the $1000 range balanced?

thanks for help.

myltwon

iTrader: (1)

383 is easier to make work as far as clearancing but both end up costing about the same depending on what kit you go with

buzz12586

iTrader: (17)

How much power are you trying to make? What are your goals for the car? Unless you are trying to squeeze every last bit of power out of an LT1 setup you are probably best off with a 383.

Abdullah

iTrader: (2)

i want around 450rwhp and torque down low. once. Bryan from the former race prep shop told me that when ever you can go with more cubes then go with more cubes even if the stroker with less stroke will spin easier and higher. so what do you think? i will go with either 4.040" or 4.060" bore. i hope i can go with the 4.060" bore when the LT1 block allow that.

96capricemgr

iTrader: (1)

A $1000 balanced rotating assembly is NOT going to up to the 450rwhp you want.

AChotrod

iTrader: (17)

Same cost and the bigger the better. 96 is right about looking into a better rotating assembly. I would go fully forged if it were me. Some of those cheap kits are weaker than stock parts.

Nyte96

^^^ What he said and PLUS..if you are really bent on getting 450rwhp...you might wanna start looking at a 6 speed conversion, or a solid roller setup...450rwhp is possible thru a big stalled automatic hydraulic rollered LTx..but they are few and far between ESPECIALLY in a Big *** Impala...I know...I have an Impala...with a 396 in it

But dam its fast

sdotlog

can i have it?

Abdullah

iTrader: (2)

i see. i will try to go with an all forged 396 stroker kit. i have a question though : can i go in a LT1 block to 4.060" bore safely?

Abdullah

iTrader: (2)

you mean 420 to 430 rwhp is more realstic?

myltwon

iTrader: (1)

stalled autos aren't dyno queens so you shouldn't live and die by a dyno number

96capricemgr

iTrader: (1)

http://www.impalassforum.com/vBullet...7&postcount=80

Not that wild a motor, just a well thought out and executed car.

Nyte96

Exactly, and THAT number will totally depend on your heads/cam and valvetrain set-up, Me personally..I like Lloyed Elliots stuff....some like AI's..you definitly dont have to dislike one to like the other (contrary to popular belief round here sometimes) But the real truth is..either one of those guys can get you set-up tp put those numbers down...but one of the fastest STOCK shortblock cars..has not ever even had his car dynoed..but it has went 11.90's, so as someone stated earlier..dont live and die by your dyno #'s..well unless you have a LE or Ai top ended 396 and it puts down 280 rwhp..then something is amiss for sure.

Good Luck and Welcome to the Stroked B-body club...I love having my car-seat in the back with my baby son in it..and two older ones on each side of him and the oldest in the passenger seat...when I go get my NANO and Nitrous bottles filled

TWS

iTrader: (63)

Yes. Yes it is.

Through a stall, automatic, and a 12 bolt.

But of course, the timeslip matters more than the dyno sheet.

powerhousecamaro

iTrader: (11)

.30 over is 383, .40 over is 385 (What I got on my supercharged setup), .60 over is 388 it isn't 396 yet. Correct me if you think I'm wrong, been through this while building my setup.

Anyway, to get 450 all motor RWHP is NOT easy, to get that with 396 is "easier" than with a 383. I agree with what most of the guys said here, it's a lot easier working around a 383 setup. To hit the numbers you want you'll need a good set of heads to go along brother..

TWS

iTrader: (63)

With a 3.750" stroke on the crank, you are correct. A 396 uses a 3.875" stroke (as traditionally machined, you could come up with some wacky combo of bore and stroke to equal whatever displacement, but those are the "normal" strokes builders use)

My 385 with AFR 195 LT4 heads put down 432/461. It was a torque monster.

My current 396 with AFR Eliminator 210 LT4 heads put down over 450 RWHP, and we don't even have it tuned properly yet. I have a very good builder, but others can certainly match or even exceed my results.

Again, timeslip is more important to me than the dyno sheet.

speed_demon24

iTrader: (6)

Spend the $$ on the topend since that's what makes power (heads/cam ect.), then whatever you have left on the bottom end (355/383/396) depending on the budget.

Abdullah

iTrader: (2)

i'm thinking in the AI 200cc ported GM LT1 heads, AI custom hydraulic roller cam and AI ported intake manifold for my 398 LT1, what do you think?

i know the 396 has 3.875" stroke and 4.030" bore but i mean the 398 will have 4.040" bore and 3.875" stroke.

za355tx

iTrader: (108)

The AI stuff will do you good. They've got a bunch of strong running cars out there. As far as the bottom end...Spend the money and do it right. A good set of forged piston, good rods, and a forged crank. If you were doing a 355 build I'd say keep the stock crank. There's guys out there running some serious times and hp on the stock crank. Many say it can handle more than 700 hp and I've seen a guy who made 900+ using a stock crank and still holding up strong. If you have a budget then a 355 build is a better idea. But if you have the money to spend then do a stroker motor. Honestly you won't see much of a difference using a 396 over a 383. I don't know that using a stock set of heads, ported of course, on a stroker will be able to net 450 rwhp with a stalled auto and thick rear end. I'm sure someone has done it but it'll be tough. Good luck.

Abdullah

iTrader: (2)

do you mean heads like AFR 195cc LT4 heads or TFS 195cc LT1 heads done by AI are a better choice than an AI ported GM LT1 heads? i thought the AI ported GM LT1 heads will make more torque down low and a little less hp up high than the AI 215cc TFS LT1 heads?

shall i wait and go with the upcoming AI ported TFS 21* LT1 heads instead?

i will go with a 398 since it has more cubes and will do more torque.