radioflyer86

iTrader: (1)

Application: 97 Corvette LS1 Automatic 130K miles

I'm faced with a delima. I've been wanting more low/mid power out of my car, but was hesitant to do that for fear of busting my transmission. Well that happened on it's own in december and I had it re-built with heavy duty components and a shift kit

Recently i've come across 2 options both are roughly the same price when installed (~$5K)

1) A brand new 0 miles LS6 from SDPC I would carry over my 1.8 rockers, and add an underdrive pulley and possibly a mild cam. Would give me solid power and a fresh motor.

2) A Centrifigual supercharger setup my mechanic removed from a ZO6 that's in perfect working order. I believe it's an entry-level A&A setup. Would give me all the power i would ever want in a daily driver

My goals: reliable power for a daily driver. This car will spend most of it's life on the road, very little (if any) time on the track.

Thoughts?

Lambert695

iTrader: (17)

That is a tricky decision.. It would be nice to have a solid motor and an LS6 would be sweet but super chargers are also very fun. Go with LS6 and then throw a twin screw on it! that will give you plenty of low end

IWGF

iTrader: (6)

Get the LS6, then later on down the line, boost it. Dilemma solved.

cali_bear2003

iTrader: (7)

I also second the LS6, its a sweet motor and a definate increase over the stock LS1 engine. I have one in my 02 z28 and it has more power then I can actually use on the street without getting myself into too much trouble....yikes.

trx250r

i would have a lot more confidence in the ls6 lasting a long time. plus all motor and stock look would be cool.

radioflyer86

iTrader: (1)

Lol...twin screw is for my next car. A much as i'd like to have one, it's about twice as much $$ as either option after getting it installed plus painting the new hood.

I currently make about 330 rwhp on my current setup with a really stable at ~325 torque curve all the way from 3000-5000 rpm. How would an LS6 affect my power and where would the most notable changes be?

Lambert695

iTrader: (17)

I would say the LS6 would give you an extra 40-50. Due to the intake, heads, and longer duration Cam. I could be wrong but I would say the most notable changes would be up top more.
I love Twin screws with a passion so I would stick with the LS6 and have a great strong motor then someday shove that on there. The LS6 is a great motor and I would be very jealous..

radioflyer86

iTrader: (1)

I suppose that means i should look into an aftermarket cam profile to get power in the bottom/midrange where i would use it the most. I rarely get above 4500 rpm on the street before some newb pulls out in front of me.

Lambert695

iTrader: (17)

I think the LS6 will still add torque down low.. I was just saying with the intake and heads you should feel it up top pretty well. LS1 and LS6 are the same except for intake, heads, compression ratio, and Cam. I might be missing one other thing. So even from a start you will be at more torque than the LS1 was but if you stay at lower RPM's I would say it wouldn't hurt to add a Cam that gives you more torque down low.

cali_bear2003

iTrader: (7)

I just googled for you and came up with these two links. Keep in mind that the C5 Z06 were all m-6 cars, so your auto will eat some power.

http://www.z06vette.com/forums/f4/z06-rwhp-109215/

http://www.youtube.com/watch?v=GlU4iZxH4lQ

jkkaz

5 grand for a used A+A supercharger is the same price for a new.

I personaly would never buy a new gmpp motor because I can assemble one for either cheaper or with better parts for the money. If I built the engine myself starting with a 6.0 short block, I would have close to a 500rwhp engine. Buy an LS engine and you have something like 370rwhp.

radioflyer86

iTrader: (1)

If i remember correctly, the A4 trans eats up about 20% of the engine's total power. I'm shooting to see an additional rwhp 50hp across the powerband.

disc0monkey

iTrader: (10)

ls6 is the responsible answer, plus you can sell your ls1.

TooLateVTEC

iTrader: (2)

The block.

I would go with the new LS6 motor.

While the blower would be nice, the boost would get addictive (for me atleast) and that motor in your car now would be on borrwed time, IMO.

1slowfbody

i had a high mileage LS also and it finally bit the dust, so i was thinking of going with a LS6 crate engine like your thinking of. that is until i started looking at building a engine and all the fun stuff along with that. my plan started as a N/A 346 with 243 heads and a LS6 intake, it has changed now into a forged 383 LS with stage II LS6 heads, nice size F/I cam, LS2 intake for now (until the blower goes on it) which will cost me less than 5 grand for 430rwhp-450rwhp. i'm hoping for the roots style blower to bring me up to 600rwhp or so with 10 lbs.
my reasoning for forging it and running dish-top pistons is simple:less compression more boost. although i wont be running 9.1 comp, the 10.3.1 will handle the boost perfectly and if i need to drop the compression a bit more i can also get a set of 317 heads for cheap
build a boost motor for the same price as the LS6. dilemma solved.

johnlv6

iTrader: (3)

LS6 or build a motor to take boost. :2cents:

1slowfbody

i thought the blocks were the exact same a non-forged block with a blower is borrowed time regardless how new the block is

1slowfbody

exactly! you can build a good size motor forged and make more than a LS6 for the same money thats just my .02

fastvet

iTrader: (2)

LS6 engine and start Fresh!!!

TooLateVTEC

iTrader: (2)

Blocks are not the same from what ive read on here.

LS6 blocks have more webbing to make it physically stronger.