I got a 350 I wanna rebuild it it is a 2 bolt main and I read in a chevy book they can handle 500 horse if installed main studs well I want good power and tourqe but yet I'm not loaded with money I also already have a tranny with a 3500 stall and I want a motor to make use of the stall could someone give me some ideas on a good combo

Have you ever driven a vehicle with a true 300 HP? 400? 500 HP in a 350 is NOT a streetable combination naturally aspirated, end of story.

What are your goals? Do you plan to race it or just have a street car? Do you plan to put very many miles on it?

I beg to differ with you about a 500hp 350 being streetable. freind of mine has a 3600lb Chevelle with a 350 drives it on the street every nice weekend, Puts slicks on, and runs low 10s all day long. Never overheats or anything. and 17 mpg!!

<font face="Arial,Verdana" size="2">Originally posted by MonzaCam:
I beg to differ with you about a 500hp 350 being streetable. freind of mine has a 3600lb Chevelle with a 350 drives it on the street every nice weekend, Puts slicks on, and runs low 10s all day long. Never overheats or anything. and 17 mpg!!</font>

Beg all you like. 500 HP in natually aspirated form in a 350 is on the EXTREME RAGGED edge of sanity when it comes to streetability. 1.2 HP per cubic inch is riding that edge in naturally aspirated form. At 500 HP you've torn the envelope wide open at 1.42 HP per cube. By the way, have you ever seen your buddy's car run down the quarter mile? Ever seen a time slip? Or are you only going on his word? Everyone has 500 HP these days, or is shooting for this magical number. It just amazes me how many people want 500 HP in a little engine, and they want it streetable, and to have nice manners.

This 17 MPG you didn't mention if he has overdrive. I am sure he does. If it's so streetable, why doesn't he take it out on anything but "nice weekends"? That sounds like a fair weather driver to me, not a regular street car.

I can build a 500 HP naturally aspirated 350 engine that'll idle all day without overheating, work with A/C, P/S, etc. With EFI it's not really that hard to do.

You are correct though, many do not have the power they think they do. 500 HP in a 350 does require some decent parts.

Jody

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From your profile and name I will assume you are not looking to spend a huge amount of $$ to make that 500 hp. I will try to point out some things that will effect your bottom line. Monza and Cam are right it can be done, but I will assure you it is not cheap. How fast you go is directly representative of 2 main things; $$ and ability/knowledge or friends a/k. 500 hp out of a 350 will cost you no less than $3k if you are really lucky. Do not expect street manners. I spent 5 years and another $5k getting all the support systems to handle what I thought was that magic 500, in reality is 450. She is streetable for around town not long-distance.

try to make a 350-400HP combo then add the juice http://www.nastyz28.com/ubb/wink.gif ...

The reason My freind takes his car out only on nice weekends is because we live up here in the lovely northwest where it RAINS most of the time. Its not alot of fun laying on your back detailing the underside of the car after driving in the rain. I have seen time slips and have watched him race. These days it pretty easy to get 500 out of a 350 and be streetable. They were getting 1 hp per cubic inch in 1957. You mean to tell me that after almost 50 years of progress that 1.2 hp per cubic inch is hard to get?? you can go on ebay and buy 450 hp small blocks for under $5000.

Im guessing i have 450 at the flywheel and i love to drive it on the street but i wouldn't want to make a long road trip or even cross the town i live in at rush hour, now it has never over heated but it just doesn't seem practical.

There are some good cheap cast piston assemblies for smallblocks like power house,
speedway, midwest motorsports thats the kinda junk i use after all is said i probrably have $2000 in my motor.

I'm with 73454 and Jody, 500HP in a daily drivable 350 cu. in. is ONLY gonna happen with digital fuel injection and tweeking, tunning and a boatload of very costly parts and pieces. Not to mention the wear and tear those parts and pieces are going to see in traffic. But you have to consider what is 'streetable' to Monza may not be the same by defination to others. The last motor in the Nova was originally in my street truck and on the street (carburated 383 just under 600HP). Driven every chance I got and every weekend. When I went through a barrel of C-12 in just one month I quickly reconsidered what 'MY' defination of 'streetable' was.

Monza, tell us about your friends combination, that's amazing. Low 10's in a 3600 pound car with a 17mpg 350 cu. in. motor is truely a feat few can accomplish. He's got to be making 600HP+ to push that much car into the low 10's.
1.7HP per cube and 17mpg,, man I want to know how he done it!

I do not know the combination but I have to stand corrected. He told me last time he weighed the car it was under 3200. I do know he has alot of trick pieces. He works with exotic metals and has access to all kinds of fancy machines, I do not know how much is bought and how much he worked. Yes it is expensive but it can be done and without overheating. He has an aluminum radiator and electric fans and waterpump. I know he has driven it 40 miles to the track, raced and came home on several occasions with no problems. I have a full bodied 68 Camaro that has done the quarter in 11.60 with a 396. I can drive it to the track and back but I do get a little nervous in stop and go traffic. But I have the stock radiator also. I get between 13-15 out on the highway.

I think if you had an LS6 (gen 3) you might be able to do the 500HP and still drive on the street.
That being said you are now into some big dollars and lots of time

I can see guys putting just over 400HP to the wheels with gen 3 engines and getting 17MPG no problem

If you have actually driven a car with 400HP I think you would find that to be enough for MOST people

<font face="Arial,Verdana" size="2">Originally posted by Patrick73RS:
I think if you had an LS6 (gen 3) you might be able to do the 500HP and still drive on the street.
That being said you are now into some big dollars and lots of time

I can see guys putting just over 400HP to the wheels with gen 3 engines and getting 17MPG no problem

If you have actually driven a car with 400HP I think you would find that to be enough for MOST people</font>

A true 400 HP will scare the hell out of MOST people.

I was hoping to get 500 out of a new motor for one of my cars, but its only showed 425 and 441 after some tweaking. its not worth the money to try and find another 60-70 horse out of a new motor at this time. Just run a little deeper gear out here on the street. It'll be fine.

<font face="Arial,Verdana" size="2">Originally posted by 73454:
Have you ever driven a vehicle with a true 300 HP? 400? 500 HP in a 350 is NOT a streetable combination naturally aspirated, end of story.

</font>

I bet a car with 300~350 hp some 3.73 gears and even a smaller stall would be more than enough to put a smile on his face. Plus you can build a 350hp engine for not much money and have it be reliable and total streetable all year everday.

ok I dint mean I wanted a 500hp motor all I want is a good solid powered motor to where I can use to drive around in and still play with others who got powerfull cars basically all Im looking for is around 300-350hp possibly 400hp so if any one could give me their opionions on good engine combos that would be great like which cam carb intake heads flat top or dome pistons I really dont want to go over 11:1

I have a 2-bolt with :

Close to 10:1 compression
Dart Iron Eagle Heads (2.02/1.60)
286H Comp Cam
Hyperutectic Pistons (standard Compression hieght flat tops)
Molly rings
Clevite bearings
Stock Rods and Crank
Hooker Long Tube Headers
American Thunder Flowmaster exhaust with flowtech cutouts
Edelbrock Performer RPM Air-Gap manifold
670 Holley Street Avenger
Mallory Ignition

Pretty mild but makes a pretty good torque band and can probably hit the 300s in HP on the dyno. (havent dynoed the new heads or manifold yet.)

Learn a bit about Camshaft degreeing, lobe seperation, and overlap, What header length and Diameter does before getting too crazy. Don't be a summit racer, You'll never get the horsepower you want.

Do you have heads already?
Other parts?
What transmision/converter do you have?
What gear ratio?