fire120ball

Where to start? and how much would this cost? Thanks guys!

bww3588

iTrader: (49)

Check Texas speed's website. They have what your looking for.

Just as fyi, you can have a 402/8 long block for about the same price.

bamaballa205

iTrader: (12)

Shouldn't be hard to do.

^X2 Texas Speed
Schwanke Racing Engines

Exidous

iTrader: (11)

But is that true with an aluminum block? :-) Some may not want an extra 100lbs up front.

ringram

402 is alloy...

bww3588

iTrader: (49)

1200 more for the aluminum block. If I were in that delima, I would opt for the iron 6.0 and shed some weight to offset. Either or. Just an option.

bww3588

iTrader: (49)

402 can be iron too. A 408 is .030 over iron or aluminum block.

fire120ball

Any input on what heads to run? and if I am wanting those numbers what type of manifold should I upgrade too? And does that need to come with injectors? and another tune of course. Am I missing some things? Other than my driveline snapping haha

garygnu

TSP base ls383 is a $1000 less then a ls402/408/416 ,you mite need a ls2 to ls1 conversion kit.

kacivic

iTrader: (2)

my 383 bottom end is making right at 400 at the wheels with just a conservative tune, mild cam, full exhaust, and stock ls1 intake. I don't doubt that with a more aggressive cam and FAST intake it could hit 450 without even going too extreme with the cam. I would hate to tell you what I spent on my engine b/c a 383 short block from TSP with identical internals would've been much less than my machine work alone, but I was stupid and didn't look into that before just having mine built. I'd think you could put a 450whp 383 together for well under $5k, depending on how much of it you could do yourself.

Troy5061

iTrader: (19)

Alot of people on here **** on LS based 383s but it really all comes down to money. Yea sure I wanted a 408 but it all adds up, I had a hard time doing a 408 unless I was going to do it right the first time, Fast intake, AFR heads etc etc plus I would have had to buy a block and deal with the extra 110lbs or whatever on the nose. Overall Im happy with my 383 especially considering it has the stock intake and TB, mildly hand ported 243 heads and a relativly tame 230/238 cam. Once I get my suspension dialed in theres no reason it shouldn't run 7.25s in the 1/8th on motor. I think with a FAST 92 it will be low low 7s in the 1/8th mile at 96 or so mph in a full weight car and If I ever decide to spring for AFR heads I'm sure it would squeak a 6.xx

BlackScreaminMachine

iTrader: (17)

Stock blocked H/C cars can make 500 RWHP easily. Just a question of how much you want to spend and how high strung out the motor is. 383's are viable via a crank and a hone. People just got spoiled as with older SBC GEN I & II tech did not allow for so many options that like said 383's get **** on.

There are some potent cars out there and many more with many more CID's that never use them to their full potential.

Way2Fast

iTrader: (1)

It's not they/we **** on 383s, it's just that for the same price+the price of the iron block you can have a 402/408. It has an overall more efficient setup than the 383 and puts out more power. Unless you road race the car the 110# difference is pretty much a non issue. If you are a serious drag racer, you are pulling weight anyway. Of course, you could always do an LS2 based stroker and the weight issue is moot, just costs more. The 383s "generally" don't fare much better at the strip than a well thought out 346 combo. That's why they get **** on.

Bigger bore, shorter stroke motors generally make better power and run better at the track. The 383 is the exact opposite of this with increasing stroke and leaving the relatively small bore. I would be inclined to tell the OP to build a 370 instead of a 383. Spend the money for the stroker on the new block, great heads and a Fast intake.

Troy5061

iTrader: (19)

I can understand that if youre buying a short block from a sponsor, they are about the same price. In my situation I was getting it built local, already had a perfectly good LS6 block out of my car. The block would have been an extra 500-700 dollars, the valvetrain parts needed for the bigger cam in a 408 would have cost 400-500. But im a cheap *** and only have $2700 in my short block. Even though I plan on getting a FAST and maybe aftermarket heads at some point I just couldnt put a stock top end on a 408 so that would have cost me another 3500 right now.

fire120ball

I want a longblock, My real goal was to spend around 7. What ever way I do it idc, I just want a new motor, I'm sick of this cylinder being dead and my annoying oil leak lol. Thanks for all the input guys! I really appreciate it

Way2Fast

iTrader: (1)

For $7k, I would build a 408.

Troy5061

iTrader: (19)

For 7 grand you can get a TSP 408 long block, just don't forget the little things that add up. Gaskets, injectors, clutch/trannys, suspension, rear end etc. If it was me I would find a low milage LQ4/LQ9 and put some L92 heads and LS3 intake on as well as a cam. Then spend the rest on driveline and suspension. A 408 aint gonna help much on the stock clutch and ten bolt or stock 4l60e.

JakeFusion

iTrader: (7)

7k include the install (if not doing it yourself), fuel system upgrade, intake/headers, shipping charges, and tune? If so, good luck. The tune, shipping and install will eat up a good 2k of that 7k budget, leaving you with not a lot else, especially if you need some of the other bolt-ons...

LilJayV10

iTrader: (39)

Thunder Racing built a 383 a while back that put down 540 to the wheels and some stupid amount of torque.

garygnu

the cheapest TSP 383 short block is $1000 less then a ls402-416.if you go with a 402 or bigger you can get ls3 heads from SDPC for a great price.