engine choice

[1971C10Blown]

right now i have a 350 with a blower on it. i am looking at turning it into a stroker or going to a bbc. i want to get around 600hp. any opinions would be great. as far as bbc i would go with a 502 or a 572. the stroker with the blower would be a 383. also i want to keep the truck drivable. the truck has a 700r4 and 3.73 rear end.

[Fitz]

Originally Posted by 1971C10Blown

right now i have a 350 with a blower on it. i am looking at turning it into a stroker or going to a bbc. i want to get around 600hp. any opinions would be great. as far as bbc i would go with a 502 or a 572. the stroker with the blower would be a 383. also i want to keep the truck drivable. the truck has a 700r4 and 3.73 rear end.

A stroker with a blower is unlikely to be well behaved, drivable, or particularly long lived as a daily driver. A 502 or 572 is a more expensive but probably a better choice.

[1971C10Blown]

ok thank you. do you know what hp would be a nice driver with the 502?

[Valhalla]

By the end of the day trying to get that many ponies out of a 350 on a blown set up you would prolly be better off getting a good 502 selling your current set up and make up the difference. I'll help out by offering you $5 for your current set up

[1971C10Blown]

im not keeping it a 350 if i do. i am going to make it a 383 or 400 so it wont be to bad to get the power out of it. the motor has alot of high end parts on it like dart heads so all i need is some machining and a new bottom end.

[Jacfourteen]

how much power you putting out now with the blown 350? How much boost you running?

[1971C10Blown]

its an older rebuild but im guessing 400 to 425 and i dont know the boost im thinking only about 4 or 5 pounds

[Fitz]

Originally Posted by 1971C10Blown

ok thank you. do you know what hp would be a nice driver with the 502?

Nope. Not familiar with the 502 but my 572 is 620hp, 700 ft lbs torque and it's got a 3 year warranty!

[1971C10Blown]

how is that 572 for driving in traffic and just idling around town? also is it just pump gas? did you get it right from GM?

[SactoJim]

I have a 383 with small 142 weiand on it that fits under the stock hood that is making just north of 500 hp and could easily by a daily driver if I wanted. I've put a good 6k miles on it and been in bumper to bumper traffic on +100 deg days.....no problems. The 142 is a little small for a 383 but you could probably put a 177 on it with a cowl hood and easily make 600 hp. If you want to poke a hole in your hood and do a 671, 600 hp is even easier. Can't remember which magazine did it, but they did a 383 with a Weiand 177 on it and made over 600 hp.

[1971C10Blown]

i have the same blower setup as you got in your pic there but just a 350. so i will take what you said into consideration. i like the look of the blowers. thank you

[Fitz]

Originally Posted by 1971C10Blown

how is that 572 for driving in traffic and just idling around town? also is it just pump gas? did you get it right from GM?

I live in Tucson so...hot summers! Around town summer or winter it runs just fine, but it's got a lumpy idle, so it's set to idle between 850 and 900 rpm. I'm running a 2800 rpm stall converter so it's just freewheeling below that and it doesn't matter where the idle is set. GM set it up to run on 94 octane pump gas (9.6:1 compression). If I keep my foot out of it mileage is about 10 mpg, but when I let it rev, you can watch the gas gauge fall. Walked down to my local chevy dealer and ordered it right over the parts counter...took 3 weeks.

[Fitz]

Originally Posted by 1971C10Blown

i have the same blower setup as you got in your pic there but just a 350. so i will take what you said into consideration. i like the look of the blowers. thank you

I don't doubt tha C10Blown's truck runs well and is quite reliable. It'll probably give my C-10 a very close run at the track, too. i've got a bit more weight to haul around. Getting north of 600Hp on a 383 stroker motor can most certainly be done. Super Chevy did an article on a blown 383 in Feb. 2009 which made 650 Hp using a weiand 177 blower...but (and this is a big but) stock crank, rods and pistons won't take the stress 650 Hp puts on the entire lower end. That motor didn't run on pump gas (105 octane race gas), and it needed a fairly lumpy cam to make power out of all that air, which meant it did not idle well either.
All that said, using a smaller blower and settling for 500 Hp and you probably have a reasonably streetable truck. Settling for 500 Hp. Man that sounds really odd. Settling for 500 Hp. There's guys in my car club that would sell their children into slavery for 500 Hp, and others who get twice that out of a 6 cylinder riceburner. Just ask them over a beer or two! I always wondered what they were smokin. So here we sit, just "settling for 500 Hp." You can never be too pretty, have too much money or too much horsepower! But, all that power requires lots of green stuff. Just a matter of how much you want to spend.

[1971C10Blown]

that is true but i dont believe the crank, rods, and pistons wont be stock im taking the motor into one of the local race shops and get then to build it and tune it for the blower so all i need to do is take it home and drop it in the truck. i plan on taking the truck to the track because i always wanted to go and now have something that i can take.

[Clyde65]

Anyone else hearing LSx, LSx, LSx!?

Must be just me....

[1971C10Blown]

how much is a lsx? what is the size?

[Clyde65]

LSx come in a variety of sizes, but in liters, ie 4..8,5.3,6.0 ( LQ4 and LQ9), 6.2. Some are called LS1, LS2, LS6, etc.

You might want to look at Thealien's write up on them to get the full story, or you can also visit this forums engine section under LSxSwaps, for more better information.

I have a 4.8 in my 65, runs around 300HP FI and stock tune basically.
The 6.0l can get over 400HP stock, with over 500 easy with cam, headers and tune. then you can put a turbo on it and go nuts with somewhere north of 650, all without selling the farm and the kids. That is if you know how, what to do and all.

I hope I have peaked your interest. Might be a cheaper or better route for you to get what your looking for.

I have seen some LSx motors for around $2K pull outs and then throw another $1k at them in tune and cam and 500+ HP is all over it.

[gearys 5600]

Originally Posted by Clyde65

Anyone else hearing LSx, LSx, LSx!?

Must be just me....

+1 You can pick up a salvage 6.0,stick a camshaft in it, and a few other upgrades,and get you over 500 h.p.. A whole lot cheaper than any 502 or 572, and drive it anywhere, with great fuel mileage.

[Clyde65]

I may be wrong but I thought the 502/572 were like over $10K. You could build a screaming cammed, turbo 6.0l for half that i would think.

[1971C10Blown]

how easy is it to come by a LS2?

[Clyde65]

ummm, not as easy as a LQ4 but these are what had the LS2

* 2005-2006 Pontiac GTO
* 2005-2006 Chevrolet SSR
* 2005-2007 Chevrolet Corvette
* 2005-2006 Holden Special Vehicles Clubsport (Z Series)
* 2005-2006 Holden Special Vehicles Senator (Z Series)
* 2005-2006 Holden Special Vehicles Coupé4 AWD (Z Series)
* 2005-2006 Holden Special Vehicles Avalanche XUV AWD (Z Series)
* 2005-2006 Holden Special Vehicles SV6000 (Z Series)
* 2005-2006 Holden Special Vehicles Maloo (Z Series)
* 2005-2006 Holden Special Vehicles Coupé GTO (Z Series)
* 2005-2006 Vauxhall Monaro VXR
* 2005-2008 Holden Special Vehicles Clubsport R8 (Z Series, E Series)
* 2005-2008 Holden Special Vehicles Grange (Z Series, E Series)
* 2005-2008 Holden Special Vehicles Maloo R8 (Z Series, E Series)
* 2006-2007 Cadillac CTS-V
* 2006-2009 Chevrolet TrailBlazer SS
* 2008-2009 Saab 9-7X Aero

LKQ in DFW Texas lists 3 for 05-06 GTO, 3200-3600.00 28K-70K miles.

[1971C10Blown]

i found 2005 Cadillac CTS-V 5.7L LS6 ENGINE AND T56 6-SPEED MANUAL TRANSMISSION on ebay complete with everything for 6000 with 30K miles. it says it has 405 horse power is this correct?

[gearys 5600]

I believe it is the same horse as the first gen z06 corvettes, The price sounds high to me..Just buy a 6.0 truck engine and swap in some upgrades.

[Clyde65]

Yea, that is alot of coin, I agree with gearys.

[eagleuh1]

Go LS engine, you'll be happy you did. Much easier to get the power, plentiful parts and more reliable, better mileage, better drivability....Plus the cool factor: