383 or ls1

[aquaxtreme]

I'm going to do a v-8 swap in my 2001 X-treme but I'm not sure whether I want to go with a 383 or an ls1. Emission laws are not a factor in the decision. The truck will not be a daily driver after it is all done. Mostly for show. How do you decide which way to go? Thanks

[officialvin]

ls1 ftw

[The Griff]

I'd think a ls1 would be the way to go if you going for emissions, theres almost everything available aftermarket to make it street legal with an ls1

[DroppedOnDuece210]

lsx all the way

[zerogravity58]

im old school build a nice 383...I built my last 383 and it olny cost me around 3g's to build the motor myself and the truck went 10.7's. Throw a th350 behind it and your set

[v8lonoma]

Quote: Originally Posted by zerogravity58

im old school build a nice 383...I built my last 383 and it olny cost me around 3g's to build the motor myself and the truck went 10.7's. Throw a th350 behind it and your set

agree 100% if its not daily driven or worried about emmisions. go 383. im doing one now except its a 385 but definetly go with carburated 383.

[556mm]

werd 383 ftw

[mountaindewguy]

383, depends though, what mods are done to each?

if you're talking a stock LS1 and a modded 383, DEFINATELY the 383.

[Christobevii3]

Fuel injection! Gas mileage, and many mods are easier to tune for all year use.

[Dogsofjune]

Compromise?
http://www.dallasexportsales.com/RALS1383.htm

[lilredxtreme]

383 ftw

[BLACKZQ8stepside]

For me, the best thing about an LS-1 is the weight savings, your truck won't be so front heavy, should still handle well, plus there's an exotic-ness about an all aluminum vette motor between your fenders, I start my swap hopefully in fall of this year

[Dogsofjune]

I guess I fail to understand the question considering you can make a 383 out of an LS1, as I posted in the link above. Just run a 383. Much better performance and "wow" factor. It's easy enough to keep the fuel injection instead of a carb if need be.

[flyinfinn]

if it's going to be daily, i would recommend staying away from the stroker motors (e.g. 383's) they produce good power, but don't like to idle. which is normally a big factor with a DAILY

[Dogsofjune]

I think he mentioned that in the first post.

Quote: Originally Posted by aquaxtreme

The truck will not be a daily driver after it is all done. Mostly for show.

[vortec97]

how about a loan and a 402 LSX engine...lol just kidding go with the 383 for cost and the fuel injection for gas mileage

[98 SS]

How about an old school 383 stroker built for boost with...say.... a holley stealth ram? and maybe some nitrous with a Y-trim??????

Thats what I plan on in the next 5 years Well....I havnt decided on the exact method of fuel delivery, but its gonna be efi of some sort.

http://www.dallasexportsales.com/383485EFITK.htm

[mountaindewguy]

if its for show, definately a 383. everyone seems to be concerned about daily driver and gas mileage, but the guy said its for show. i think a 383 is much sweeter than an LS1, and IMO looks better on a show truck.

[zerogravity58]

what does a stroker motor have to do with idling?

[gmax111]

ls1 from personal experience... infact get the best of both worlds and get a ls2...

[BUCKET]

um, 5.3 with 355 at the fly on the aeroforce scan gauge. gitting an average 21mpg hwy/city.

so ls1 makes the most sense to me...

[aquaxtreme]

If I decide to go with the LS1, is there anywhere that is known to have an abundant supply of used LS1 engines at a reasonable price? I think a new one is a little out of my price range. I'm in South Carolina and traveling to a reasonably close state is not out of the question. Thanks.....

[circa]

Quote: Originally Posted by 99 BUCKET

um, 5.3 with 355 at the fly on the aeroforce scan gauge. gitting an average 21mpg hwy/city.

so ls1 makes the most sense to me...

damn.

Yeah go ls1 or bore an iron 4.8 to a 5.7. weee revs.

[gmax111]

Quote: Originally Posted by aquaxtreme

If I decide to go with the LS1, is there anywhere that is known to have an abundant supply of used LS1 engines at a reasonable price? I think a new one is a little out of my price range. I'm in South Carolina and traveling to a reasonably close state is not out of the question. Thanks.....

I know where there is a never ending supply and they flow out like water...

EBAYDOTCOM....

[mountaindewguy]

why does everyone seemed concerned with MPG and such on a SHOW TRUCK. i think a 383 would look MUCH more impressive on a show truck.

[circa]

i would be more impressed by a show truck that preformed well and got good gas mileage.

[Dogsofjune]

Quote: Originally Posted by mountaindewguy

why does everyone seemed concerned with MPG and such on a SHOW TRUCK. i think a 383 would look MUCH more impressive on a show truck.

Not many have respect for a trailer queen, you gotta drive it to the show, and with gas prices being an unknown from day to day, might as well pinch some pennies somewhere.

[NewV8S10]

The LS1 will get more oohs and ahhs at shows.

I'm also wondering what a stroker kit has to do with the way an engine idles. My 383 idles dead on 1000 rpm all the time.

[Rinkrat456]

Quote: Originally Posted by NewV8S10

I'm also wondering what a stroker kit has to do with the way an engine idles. My 383 idles dead on 1000 rpm all the time.

I too was wondering that throughout this post. A 383 we have idles so quiet and smooth that you wouldn't know the motor was on if not for the ticking of the Rhodes lifters. It idles right at 800rpm thanks to the Performer cam.

[gmax111]

i dont know... more wieght in the stroke?

[4.3Xtreme]

The gas money you will save from an LSx will be more then worth your money for the swap! A 383 would be sweet, but it's just to impractical for a daily.

[zerogravity58]

If anything a 383 would idle better then a motor with small cubes and the same cam. The more cubes usually "mellows" out a cam. If its just a toy save the money you would drop to buy a LS1 and build a kickass fuel injected 383. I like the holley stealth rams plus with them you dont have to worry about how big a cam you run because of the computer. The computer only operates the fuel injection. Throw a 700R4 behind it and it will get as good gasmilage as a LS1

[NewV8S10]

Rink, my little LT1 is slightly louder than that, and except for a bad set of Comp lifters, it's reliable enough to daily drive if I wanted to do so. Now that the Morels are in place, I just need to fire it up and finish the fuel system. Here's a quick vid of it before the lifter exploded.

Outside The Car - Google Video

Quote: Originally Posted by zerogravity58

I like the holley stealth rams plus with them you dont have to worry about how big a cam you run because of the computer. The computer only operates the fuel injection. Throw a 700R4 behind it and it will get as good gasmilage as a LS1

Have you ever tuned an EFI 383 with a big cam? Low vacuum is a PITA to get around.

A 700r4 behind a 383 will get better mileage than a th350 would, but LS1 fuel economy would be tough to match. The lean cruise mode is hard to beat on the highway.

[Joewee350]

Quote: Originally Posted by zerogravity58

im old school build a nice 383...I built my last 383 and it olny cost me around 3g's to build the motor myself and the truck went 10.7's. Throw a th350 behind it and your set

Whats the mod list of your N/A 3g 383 to get it to go 10.7?

[zerogravity58]

this is true but theres a guy in baltimore thats great with tuning EFI so all of us let him do the work for a couple of bucks I ment that it would be closer then a 383 with a carb and a th350 behind it. The overdrive helps out along with the EFI. I was just throwing a few extra ideas out there

[zerogravity58]

Quote: Originally Posted by Joewee350

Whats the mod list of your N/A 3g 383 to get it to go 10.7?

350 2 bolt block studded mains, line hone, new cam bearings, plus a scat cast crank, eagle I beam rods, keith black pistons cost roughly $1,500 i did the assembly myself.

Set of protopline 220cc iron head i picked up from a buddy $500
Used brodix single plain intake $100
Comp Xtreme Energy solid roller XE292(biggest off the shelf xtreme solid roller) regular base circle cam and springs off ebay $250 New
Comp pushrods and steel retainers $100
Comp solid roller lifters, bought em used from a buddy $100
Erson roller rockers $150 new ebay
Cloyes Timing set $50 new ebay
balancer (summit style SFI approved $250
oil pump, gaskets, bolts, odds and ends $150 or so
I had the valve covers, distributor, timinig cover from last motor

Only thing i dumped alot of money in which i dont include in the build was my carb. I bought a prosystems 860 carb that was $800

add the prices up right around 3g's, prices may very depending on how you buy everything and who you know. I bought a few used parts and a few parts off ebay. Ebay is your freind

[zerogravity58]

Quote: Originally Posted by zerogravity58

350 2 bolt block studded mains, line hone, new cam bearings, plus a scat cast crank, eagle I beam rods, keith black pistons cost roughly $1,500 i did the assembly myself.

Set of protopline 220cc iron head i picked up from a buddy $500
Used brodix single plain intake $100
Comp Xtreme Energy solid roller XE292(biggest off the shelf xtreme solid roller) regular base circle cam and springs off ebay $250 New
Comp pushrods and steel retainers $100
Comp solid roller lifters, bought em used from a buddy $100
Erson roller rockers $150 new ebay
Cloyes Timing set $50 new ebay
balancer (summit style SFI approved $250
oil pump, gaskets, bolts, odds and ends $150 or so
I had the valve covers, distributor, timinig cover from last motor

Only thing i dumped alot of money in which i dont include in the build was my carb. I bought a prosystems 860 carb that was $800

add the prices up right around 3g's, prices may very depending on how you buy everything and who you know. I bought a few used parts and a few parts off ebay. Ebay is your freind

This motor held up and and i shifted it at 7,000, crossed through the traps alittle over 7,000.

[PEKO]

Ls1 Ls1 Ls1 :-)

[aquaxtreme]

How much different is to rebuild an LS1 compared to an older 350? If I could get an LS1 for cheap but had a lot of miles on it I may want to rebuild it before I install it. Thanks.......

[98 SS]

Quote: Originally Posted by zerogravity58

If anything a 383 would idle better then a motor with small cubes and the same cam. The more cubes usually "mellows" out a cam. If its just a toy save the money you would drop to buy a LS1 and build a kickass fuel injected 383. I like the holley stealth rams plus with them you dont have to worry about how big a cam you run because of the computer. The computer only operates the fuel injection. Throw a 700R4 behind it and it will get as good gasmilage as a LS1

YES! YES! YES!

The LS1 is sexy no doubt, and technology kicks ass. But you cant beat the availability and afordability of a 350 based motor. Plus if you get a nice efi system you can tune it for economy and have a performance mode...... AND my big selling point....pretty much everything I have will bolt up to a vortec 350; AKA my supercharger.

[extdrag'n86]

i say 383 if you want to run what you brung if not i say the ls1 its a bit more expensive but they look more like they belong compared to the carburated 350 based motors unless its a first gen then it looks a bit more like it belongs but hell i say go with a 400 small block and do all the same performace mods to it as you would the 383 and get less fuel milage yes but more power
i personally would go with the ls1 it looks better stuffed under the hood but for power i vote 383

[extdrag'n86]

Quote: Originally Posted by aquaxtreme

How much different is to rebuild an LS1 compared to an older 350? If I could get an LS1 for cheap but had a lot of miles on it I may want to rebuild it before I install it. Thanks.......

im sure the ls1 will be a bit more costly to rebuild and if it was me rebuilding i would change parts and make more power but its an s-10 so any v8 is gonna make your s-10 quick but if you want to know the rebuild prices go to jegs or summit and see the differences

[NewV8S10]

The cost difference to build an LS1 compared to a conventional small block is negligable. What's going to cost you is the accessories, computer, and harness since you have to use specific components where a small block just needs an alternator and a water pump.

FWIW, a small head/cam package on an LS1 is enough to put a full weight F body into the 11's, yet it's usually docile enough for grandma to drive to the grocery store if need be.

[flyinfinn]

ok guys. i appologize for the idle comment. i hasn't educated at the time. but bang for the buck, go 383.

BTW zerogravity, impressive runs. especially all motor