Rddragon

Idk what the deal was but the local mechanic ran a pcm serial number check with gm and it was a police interceptor package. I guess it had to do with the police camaros they use to have. It was like an extra 28 horsepower and 30 some torque. Thats just what they told me. The timing was advanced, i know that. Its getting dynoed right now with the 383 so it dont matter. My 383 was godly expensive yes but i did everything that you could do. My price involved all the labor and dynoing. I would go with the 383 if i were you, the iron block just takes away the originality from a Fbody i think.

02sleeperz28

iTrader: (26)

There is absolutely nothing wrong with going with a 383 its an awesome motor when setup right. Good luck with your build

Zac_Speed

iTrader: (4)

I've got a Chevy High Performance where they built a carb'd 383 w/ AFR 205's and the thing made like 560hp with like a low 230's cam. So the potential is there for a 383. Stay with the aluminum though, I never get why people go to iron block, I would think that the weight savings in the front end would be worth the aluminum.

ZMONSTER!

iTrader: (9)

the weight savings is like 100lbs right? How much can you get an LS1/2/3 block for? I know I can pick up an iron 6.0 block for like 200-300 bucks, and Ive seen the 5.3 blocks for as low as 100.

Beau@SDPC

iTrader: (14)

we do have our machine shop build them for us. it normally takes about 3 weeks to a month from start to finish....

9secondsflat

sorry...but i know of four friends in two different states....four out of four engines took a **** in less then a year...all had main bearing problems...all had their engines installed by top rate shops....three different shops... four different cars...96 firebird , 96 lt4 vette, 01 vette and 00 ss camaro.

Beau@SDPC

iTrader: (14)

too many variables.....were these new GM engines? or were they built by us personally?

Scoggin Dickey

iTrader: (34)

That's funny how you know about this high rate of failure yet neither we nor the multiple shops that carry our engines know about it. Could you pm us more information on who they were so that we can get to the bottom this? We have a great reputation with our engines, so much so that not only do we sell decent quantities of them ourselves but other companies also carry our shortblocks with pride.

I can't fathom how you know four people who had our shortblocks, two LT engines and two LS engines, they all had main bearing problems and happened to be your friends and all used great shops for installation and had the same failure in the same timeframe. That's a really odd set of coincidences that merits looking into. I'd love for you to pm me some information on that situation so that I can look into it.

Mike94ZLT1

iTrader: (3)

Its not that I'm not making good power with my 383. It's that I could have spent $500 more for a 402 and had the potential for more power.


Sure they do. And the same heads / cam on a 402 will make more power EVERY TIME.

No, nothing wrong with it, but bang for the buck there are better options.

And the 402 made over 600 in the next article...

ZMONSTER!

iTrader: (9)

/\ I think we can all agree that a 402 would be nicer to have, but I will end up with a 347/383 for one reason, that if I try to use my current H/C combo I will have a dog of a 402. Can you imagine what a 402 with PRC 5.3 heads, a 224 cam and an LS6 intake would be like? The beauty of a 383 is that everything I have on my current motor can be reused without much worry.

Bo White

iTrader: (59)

Tony Mamo @ AFR had a mean *** 383 in his vette, very "mild" builds with not so mild results that can be easily repeated:
https://ls1tech.com/forums/dynamomet...-included.html

ZMONSTER!

iTrader: (9)

Good post! 600hp 383 is pretty damn impressive!

Mike94ZLT1

iTrader: (3)

So you're going to limit your future potential based on what you have now? Smart idea... Sure, that 402 may be undercammed with a 224 cam, but you can change that later. Same thing with the heads and intake.

See, when I built my 383 I had the same train of thought you did. I will save money by reusing parts, and since my parts I have now won't really be optimal on a larger engine I will build a smaller engine. Thats where I fucked up. I was on a budget at the time and didn't have the money for better heads, a better cam, or a better flowing intake at the time. Well now I do, except the heads I want won't work on the block I have, and I'm not about to drop $3600 on some MAST heads. So I screwed myself longterm by thinking the way you are.

I'm not knocking you, if you have your heart set on a 383 then go for it. I just wish I thought things out better when I blew my 346.

MJR7AD

iTrader: (36)

Im building my 383 right know and ill have the whole thing completed with full tune around 4,500 thats with scats roatating assembley,ported and polished 243's, ls6 intake exc... if u take your time you can most deffinetley get your cost around there ,it took me a year and a half but i also saved 1000's of dollars, its just finding the deals. Also i dont know what that guy was talkin bout with buildin the 408 and ull regret doing the 383. my brothers N/A 02 ss 383 is a daily driver that runs 10.60s in the quarter. U will be happy with a 383 just have a knowledgeable tech do your work.

Matt

ZMONSTER!

iTrader: (9)

In reality it comes down to build what you can. Me personally I could not afford a 402/408 right now, but if I had to I could probably afford a 383. I would rather have a well put together 383 than a thrown together 40X. Some of us cant really say Ill be able to afford this or that later.