beaches91

I wanna change my 350 into a 383. I have a practically brand new 350 crate motor. I wanna go up to a 383, would it be cheaper to buy a whole new 383 and sell the 350 or just stroke my 350. Also Im using a 142 weiand blower that I wanna use with the 383 aswell. Any suggestions? I need to know where to purchase and how much I should be looking to spend. I have a 91 Camaro and my ultimate goal is POWER!!!!

AC

iTrader: (3)

Just by reading your post of wanting to go to a 383 but not even knowing where to start I have to question it...sorry but are you just wanting advice on where to get a kit from or do you seriously not know where to start looking. My suggestion if you're budget limited is to keep the 350 and get an Eagle 383 kit. Their 383 1 piece assemblies (forged ones atleast) are completely balanced. If money is no object then still keep the 350 and go with a Crower crank and rods, SRP pistons (just my opinion). If you plan on keeping the730 ECM then you're going to have to do some tuning and you may also want to get something like a MSD BTM to help reduce the chance of knock when you slap that blower on your motor. Changing over to a 383 isnt like swapping in a new intake or anything...it's a bit more involved as I'm sure you're already aware of.

beaches91

Im just looking for advice on where to get the stuff. I have about a $4,000 budget. Can I do it in that price? I have a mechanic that has done it before. However he did it totally from the ground up so he dosent know exactly what its going to cost. Im just trying to price the stuff. I see that your running a 383. Is it worth the money and the work? How is it as far as just normal driving?

AC

iTrader: (3)

beaches91, for 4000 bux....HELL yeah you can do it and it'd be a pretty good motor at that. Use your existing block for starters. Depending on the heads you have you may want to go larger intake cc's. Anyway, figure block prep (bore,hone,wash,etc) 400 bux. After that you're looking at Summit Racing (Summit Racing - High Performance Car and Truck Parts | 800-230-3030) for a rotating assembly kit and most of the other parts you'll need. You can get a really good rotating kit for 2k, heads another 1000. I built my motor complete from the ground up including a custom grind cam for under 4k. BTW, I haven't even cranked my engine over yet. I've been building the car / project for almost 2.5 years and have just now finished up. I should be turning the key in the next month or two. I still have the exhaust from the collectors back to eithe fab or buy.

quick ones

Beaches91 you can get a completely assembled shortblock from Ohio Crankshaft $2495. New gm 4 bolt block steel crank 6" rods your choice of 3 pistons etc,etc. If you already have the blower the 383 will require a smaller upper pulley to acheive the same boost as the 350 if you dont have the blower get the 177 you wont have to spin it as high.

Spectre

The way I see it, the only thing you'll gain is more torque at a lower peak rpm.

With a practically new 350 cu.in crate, and a 142 blower, id invest in better heads with a good roller hyd. or solid cam.

Tho if the stroker is a must, id get an assembled short block as mentionned in the last post.

No point ruining a perfectly good short block, price wise, a good kit with SRP pistons with the added assembly price and such wont be far from that short block ..

ht4100

iTrader: (2)

I'm almost done with my 383 build. I bought a performance kit from nortern auto parts for 810 bucks. This included moly rings, hypereutectic flat tops, moly rings, brass freeze plugs, scat crank, and I paid extra from an upgraded XFi HFT comp cam. I used a rebuildable 350 block, the machine bill for boring, balancing, and resizing the stock rods came to 900 bucks.

So you'd be at least another 2 grand plus other costs. I don't know for sure, but you might be better off just buying some AFR heads and cam

tony_cogliandro

iTrader: (3)

I have a question for you about your 383. i am thinking of getting a crate 383 from Chevy but it is already rated at 9.1 compression. the 142 blower, even at only 7 lbs of thrust, will give you more than 10.0 in compression but i was told that it was the limit of that engine. What are you doing to make up for the high compression? it was suggested that i use different pistons and drop the compression down to 8.0 - which will cost me about 20 hp but that the blower will do more to make up for that initial loss.
what was your solution to this? i dont want to get a new engine and then blow the darn thing up the first day out.

Spectre

you could take the heads off and do some chamber work to add some cc ..
get thicker head gaskets, and\or get a cam with more overlap, so it could bleed off some pressure.

tony_cogliandro

iTrader: (3)

that was a couple of greast idea's. thank you for the response. i will look into them.

Spectre

1985WS6transam

iTrader: (4)

Heh Im at a $3000 budget for my 383 build, im sorta determind to build it but the price of machine work is gunna kill me. I would like above 350hp NA. I found a rotating assembly kit sorta like ht4100 in the same price range balanced already but idk if i should trust the balancing from someone online. And i still need to get a set of heads, are there any suggestions on less expensive heads that i should look into? my current 350 has mismatched heads, one side is the 882 the other is IDK but i am assuming it cracked and they just threw another one on there... so i am def not using those no matter what, who knows what else was done wrong.

I am trying to properly plan this build before i get myself into something i cant get out of without losing alot of money...

AC

iTrader: (3)

1985, what do you consider less expensive (price range?)

1985WS6transam

iTrader: (4)

Im still trying to figure out how to budget everything but as of now between $600-800 new/ just redone. Maybe more if I have the money or are a really good deal. Dont really want to go with stuff that will need machine work since the engine machine work alone is a big part of my budget.

EDIT: Hey AC, you think only 400 for basic block work, i just reread what you wrote above all i need is basic block work, i can do all the assembly... and i am going to use my 350 thats in my car right now to build so i know it is running.