N2OBaby

I have seen 370,390,402,413 and 427 cid stroker setups for the LQ4 or 9 but not a 396 why is this?

I hear the LQ4/9 block can be overbored +.060 so it doesn't seem to be a block issue.

4.060 bore with a 3.825 stroke forged pistons , rods and crank, 10.25-10.7:1 CR, N2O cam, Procomp or other Aftermarket LS3 heads,Holley Tunnel Ram(LS3 type) with a Blower type hat, EFI injectors would this make 460-520 RWHP on 91-93 octane fuel?

outkast6991

iTrader: (34)

A 6.0 bottom end will make 460-490 rwhp so I don't see how a 396 wouldnt

odarabla

iTrader: (1)

If your gonna buy a stroker kit then why would you down size? Buy a 4" stroker kit with your 4.060 pistons and build you a nice 416ci motor..

bww3588

iTrader: (49)

Maybe it is going in a first gen or second gen camaro. Certainly a viable option but the 3.875 crank would be custom and expensive.

bww3588

iTrader: (49)

However, I think there are still off the shelf 3.900 cranks that are still around, combine that with a 4.020 bore and it gets you dead nuts 396.

NemeSS

iTrader: (127)

Just build the 415ci and slap 396 badging on the car.
Nones the wiser. Lol

warriorcustoms

iTrader: (10)

If I were buildin a 6.0 it would be a 427 That combo does a streetable 650hp @ the crank IF I blow up the 396 ltx Thats what Im buildin for my 95 ram air t/a Theres no replacement for displacement So do the 427 & be done with it LoL Youll thank me later

outkast6991

iTrader: (34)

There is some additional longevity to a shorter stroke. For spray I would think you could fit a better piston on the 396

N2OBaby

That would leave alot of meat in the block.

Who makes a 3.90 crank is that Callies?

redtan

iTrader: (5)

Because noone makes a 3.825 crank and has it on the shelf to be bought. 4" cranks are easily available and cheap, so most people go with that or stay stock stroke.

What's the point of spending all that money on a custom stroke crank? Just so you can say you have a 396?

I'll take a cheap, reliable and easily available 4" crank over a custom and expensive 3.825 crank.

bww3588

iTrader: (49)

K1 makes one

http://www.texas-speed.com/p-2681-k1...00-stroke.aspx

bww3588

iTrader: (49)

true on the custom crank being expensive, but there is more than one way to hit 396 cubes.

and honestly, with the 3.9 inch cranks being the same prices as the 4 inch cranks why more people dont go with them than you see.

redtan

iTrader: (5)

Yes but are 4.020 pistons just as cheap and available as 4.00, 4.005, 4.030 etc. pistons?

There's a reason why the certain engine sizes he mentioned are very popular and you don't see many 396s. It's because both pistons and crank are mass produced, thus being easily available and cheap.

Sure the 3.9 crank is available off the shelf, but then the piston is not.

Either way he can make that magical 396 if he so chooses. I just answered to his question as to why there are many 402s, 408s etc and not so many 396s.

Because a 4" stroke fits just as fine as a 3.9, costs the same, yet makes more cubes...

If you could walk in a store and buy a 40" TV for the same exact price as a 39" TV (all other specs being the same), would you be surprised that the 40" TV would be more popular? It's the same here...more cubes for the same price. Unless someone has a hardon for a specific cube output, a normal person would buy the 4" because it's more cubes for the money.

warriorcustoms

iTrader: (10)

If you must just build a 402 & call it a 396 I drove myself crazy over 5.85 vs 6in rod for spray & after talkin to all the good piston manufacturng tech ppl Im goin with a 6in on my ltx IF I go direct port I can still spray 3 or 400 Thats on a 600hp motor Do you need more??? Doubt it LoL A 402 lsx will be mean but a 427 or 454 is A lot better off the bottle & even better on A 3.875 crank & 4.030 bore = 395.4 cu in So Im sure a 3.9 crank & a 4in bore will getcha close!!!!

odarabla

iTrader: (1)

Also you can build your stock LS1 motor into a 396ci motor cheaper than the LQ motors. 3.92 bore and a 4.100 crank is a 396ci motor..

odarabla

iTrader: (1)

http://www.race-cars.net/calculators...alculator.html

bww3588

iTrader: (49)

You can't take a stock ls1 .022 over on stock sleeves.

bww3588

iTrader: (49)

Redtan, I agree more cubes is better for the same money. Obviously, his question as why you don't see them is answered, but he obviously has an interest in building a 396 for some reason or another, so I'm trying to help him get that and not steering him away from it like you Are.

4.020 pistons are shelf items and plenty of vendors can get them, they just don't stock them for reasons you already stated.

If he truly wants a 396, he can have it for the same price as a 408, 383...etc. but I'm not going to sit here and bash his ideas, I'm going to help him. That is what ls1tech is all about and over The last 5 years, it has strayed far from that.

N2OBaby

What sparked the interest was a set of SS 396 emblems I saw in a Chevy mag but a 402 or 408 maybe easier to do.

I am glad with the LS engines there is more than one way to do it right 370,390,402,413,427 from a LQ4/9 block.

Also I believe Callies sells a 3.825 crank for use with a +.030 block ie a 390 cid.

bww3588

iTrader: (49)

North Central Ohio huh?

just noticed that.

anyways, if your set on 396 cubes, by all means, go for it. it would be the same price roughly. with the 3.900 crank, a 6.125 rod and a custom 4.020 piston if for some reason one is not readily avaliable for a 3.900 crank you can make killer power and still have room to spray it. if you have to get a custom piston, it's usually 50 bucks over the cost of a set of 8 shelf pistons. I say go for it. a 396 LS would be really cool.