86Z28

i'm planning on going with an eagle forged crank 4.00" stroke , forged pistons (undecided and need some help) forged h-beam connecting rods, but right now i'm looking at the AFR LS1 205cc 66cc Chamber Cylinder Heads with Dual Valve Springs Rated to .650 lift and the cam is a TSP Magic Stick v.3 ("MS3") Camshaft: 237/242, .603"/.609", 113 LSA

i'll also have a F.A.S.T. LSx intake manifold with 90mm TB
need some ideas on pretty much everything and any direction would be greatly appreciated....this motor will be going in my 86 Z28 camaro......
also to make the LS1 into a 383 with the 4.00 stroke crankshaft do i need to bore out the motor any? haven't ever dealt with an ls1 motor before just the 4 bolt main thats in it right now....thanks again for all the help
MIKE

86Z28

anybody? also my goal is around 500rwhp with the t-56 M6

Phil99vette

iTrader: (11)

I would build a very nice 346 with the same cam + coatings, use the extra money for a nitrous kit. A nicely prepped 346 will make 480-500rwhp.
Phil

Patrick G

iTrader: (14)

Everything on your list looks good, although I'd probably steer you toward the larger AFR 225s for your stroker. If you go with 205s (like I have), it will be a torque monster, but you might be giving up some power compared to running the 225s.

JZ'sTA

iTrader: (23)

Agreed and I would try and talk you into a 388 all bore for those AFR 225 heads.
A 4.125 bore head and a 4.125 bore block would make some Killer power.
Cost is only 500-700 bucks more and is a very nice setup.
As far as your origional question on the 383 you will need a 3.905 bore which is standard and a 4"crank. Very common build but not done very often these days due to the 408 making so much more power for the same price.

SDB

iTrader: (7)

I have a 382 stroker with AFR 225 heads, FAST 90 intake, 90 TB, 242/250 .611/.619 114 cam....will have it together very soon....should be good for some decent power.

Go with the 225 heads for the all bore or stroker...

86Z28

anyone have other suggestions on a cam? i do plan on running a 150 shot of nitrous in it......i also looked at the futral f-9 cam today, 232/236, .598"/.600" and 114 LSA.....the futral is made for nitrous but would the TSP cam be fine with 150 shot? i know the futral would idea a bit better but i'm only looking at driving this car around on weekends/nice days and such......also going for 10.5:1-11.0:1 compression.....what kind of pistons should i be looking at?

JZ'sTA....how do i go about making the 346 a 388 all bore? stroke? bore over? would the 225's work well with this setup? i'd actually be more interested in doing that being that i find a lot 383's around here, none being LS1 but i would like a 388 a bit more....

Tony Mamo @ AFR

iTrader: (13)

I will be testing a 383 with several cams (hyd. and solid) and both the 205 AND 225 heads in the next 3 weeks or so. If your not in a rush, sit tight and wait for the results....there will be alot of combo's to choose from. I'm looking forward to all of the results....

Tony M.

PS....By the way, just for clarification this will be the "traditional" LS 383 (3.905 bore and the longer 4" stroke).

JZ'sTA

iTrader: (23)

Tony takes his times and does a good job detailing things he tests.
I would wait for the results.
As far as the all bore 388 goes it is a 4.125 bore and a stock 3.622 stroke. You will need to resleave the motor.
The stock crank works great and is the strongest part of the motor and really there's no need to replace it unless your going bigger.
A 388 and a 427 are very similar the difference is the 427 uses a 4" crank. Again a very good combo.
Heads flow better on larger bores.
If a head flows say 310@600 on a 3.9 bore and is then flowed on a 4.125 bore it will flow better numbers. More then likely over 320 if setup correctly. It flows better from the start to the end.
This is a key factor in making power.
The nitrous will give you more then enough torque. Go All bore and I believe you will be happy you did.

86Z28

well everything i've found crank wise for the car is right around the same price.....between the stock stroke and the 4.00" stroke.....could i do both the 4.00" stroke and sleave the motor and bore it to 4.125? i'm tired of seeing the same old setups in my year camaro.....i've got plenty of time so i'll definitely be watching for the results on the H/C tests....also wouldn't mind if someone could hit me up on aim at imsolost7886 to chat about some other ideas i have......just be prepared for a lot of questions

JZ'sTA

iTrader: (23)

Forgot to answer your other question.
This will be very close but not deadly accurate.
Were gonna use a .040 gasket and shoot for 11:1CR
We are also gonna use a flat top piston with -2cc V/R.
On a 383 you gonna need a 69cc head
On a 388 your gonna need a the same.
On a 427 you will need a 77cc head which I have never seen but I am sure can be done or you will need a -8cc piston with the 69 cc head I was using before.

Spellbound

I have a somewhat mild 383. I bought the ZO6 the way it sits. Check the for details.

SAM98WS6

get the 225's, good valvetrain and kooks LTs and you will have 500rwhp. I would go at least 11.0:1.

SS1875

iTrader: (34)

I have a 383 built by Lingenfelter Performance with JE custom pistons, Callies crank, Manley billet steel rods, Fast 90mm/NickWilliams 90mm TB, Lingenfelter ported LS6 heads(59cc) 2.02 int. valves/1.60 ex. valves,Lingenfelter GT1-1 cam..229/242 .631/.631 114CL. First dyno numbers are posted in my signature...these numbers were on the initial mail order tune. Hopefully this will give you some idea of what to expect.