350 to 383

Silverado Brethern · #1 01-05-2005, 05:51 PM

I have a 1997 350 thats been a lil "under the weather" lately and even before i had thought of either building it up or swapping it for another engine. To the best intrest of mine, due to lack of willingness to spend much money on it, i want to keep my engine and upgrade it. I had been talkin to Slowprocess and some other guys in the silvy forum and they had mentioned, 6.0L, LT1, or 383 stroker. the one most interesting to me is the 383, is my understanding correct in that to turn my 350 in to a 383 stroker what i need to do is get a stroker cam, lifters, push-rods, and timing chain? i just want to see my truck be around 300-350hp and run 15.0-15.5 in the quarter. So is that all i need to build a 383 out of my engine and if not what all is involved in doing so? at this point that is what i want to do cuz i see a 6.0 as being too expensive, and i know nohting about an LT1. Any input will be appreciated.

Silverado Brethern · #2 01-05-2005, 06:27 PM

wait wait wait....is it a stroker CAMshaft i would need, or a stroker CRANKshaft? feel kinda dumb but what the difference between a cam and crank?

Silverado Brethern · #3 01-05-2005, 07:13 PM

Hey sorry about the triple post and all but i just got a camshaft and crankshaft mixed up...anywho, what all do i need to turn my 350 into a 383 stroker?

kenny-1907 · #4 01-05-2005, 07:26 PM

350 to 383 stroker = 400 crank and connecting rods. Be sure you use a 400 flexplate that has been balanced for that crank or it could end up a costly mess. A trans shop here did not know that my brother had a 383 stroker and put a 350 flexplate on it and long story short it snapped the crank 2nd main bearing journal in from the rear and shot it back tearing the starter off the motor. #3 connecting rod was twisted 90 degrees and bent 90 degrees, and that was just a few of the things that went bang.

Silverado Brethern · #5 01-05-2005, 07:57 PM

So your sayin just the crank, rods, and different flexplate? that all sounds way too easy...

Silverado Brethern · #6 01-05-2005, 08:00 PM

and if thats what i do it wont blow my heads off due to higher compression or any other nasty side effect like that...

kenny-1907 · #7 01-05-2005, 09:53 PM

oh and btw , my brothers 383 was getting approx 450hp. He also had a huge cam in it too and if i remember correctly 10.5 :1 compression. He had head work done as well as porting/polishing, dual exhaust, and a carb that may as well have been a 5 gallon pail on top considering the amount of fuel it would go though at times lol. So i am not sure if going to that extent would be considered the cheap way.

Silverado Brethern · #8 01-05-2005, 10:07 PM

I dunno about all that but i would prolly go for a cam and well as several other internal engine upgrades (post in silvy forum). Any ideas on cost for crank, rods, flexplate? looking to get the most power for the least amount of money, within reason.

cordovaass · #9 01-05-2005, 10:42 PM

i have a 1990 c-1500 with a 350 and making it a 383 sounds like something i would like to do... as long as thats all you have to do....if you dont have to mess with anything else ... does any one know of any one who sells a kit or maybe a web site that has detailed instructions that i could print off

abaird · #10 01-05-2005, 11:30 PM

Quote:

Originally Posted by cordovaass

i have a 1990 c-1500 with a 350 and making it a 383 sounds like something i would like to do... as long as thats all you have to do....if you dont have to mess with anything else ... does any one know of any one who sells a kit or maybe a web site that has detailed instructions that i could print off

Summit racing offers a kit for around a $1000. expensive, but comes with pistons, rods and crank. And pretty much everything else you would need. Seems like a good deal to me but I am no expert when it comes to major engine upgrades of that sort.

MadMac56 · #11 01-06-2005, 01:47 AM

Go to Yahoo or Google...Put "scat rotating assembly" in the search box...and shop for the best deal...comes with crank, rods & pistons...add a balancer & flex plate and voila! 383

clampjockey · #12 01-06-2005, 09:26 AM

can you use the original dome and throttle body of a FI truck on a 383, and still work right?

kenny-1907 · #13 01-06-2005, 10:09 AM

one thing i did forget to mention , i do believe that you need to bore out the block approx .30, 350 bored .30 = 380 + (possibly the extra stroke gets you the extra 3 maybe) 383 . Just a thought , but i do know that my brothers was bored .30 over.

Silverado Brethern · #14 01-06-2005, 06:08 PM

hmm...the kit thing sounds good but the boring of my block...that kinda hinders me away from that thought. The way i see it around $1500 or how ever much it would take to do this job right with a few extras, is still gonna be a good bit cheaper than gettin another engine.

cordovaass · #15 01-06-2005, 07:45 PM

hey i was talking to a buddy of mine who used to race and he said you only get like 20 horses from stroking it. $1000 for 20hp????? i dont know

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