if you want to rebuild a 350 chevy whats the best way to get 500 hp. the motor is 1974 small block carb?

Answer 1

500 horse is possible, but difficult and expensive. You're going to need a new cam, probably a set of pistons and/or crankshaft upgrade, headwork, induction and exhaust work. If you really want or need 500 horses, just by a crate 383, it's cheaper and less work in the long run, plus it'll be warranteed.

Answer 2

Sell it and buy an LS7. You're done. :)
Please ignore Viaj, as you can't put a chip into a vehicle that was made before computers were in cars.... Also, nitrous and a supercharger together are a very bad idea unless you have a $5000 engine management system.
As said above, easiest way to get 500 hp out of a 350 is to make it a 383. That alone won't do it, so get a lumpy cam, some good flowing heads, raise the compression ratio, and with good intake and exhaust work, you can get 500 hp. A 383 will get there with more torque and be more streetable.
A cheaper option is to get your 350 to 350hp, then spray a 150 shot of nitrous. This will cost a lot less, but you won't have 500 hp available all the time. Bottles run out.
A good bet is to call up Summit or Jegs and talk with one of their tech advisors. They love this stuff and will happily offer several combos to fit your budget.
Good luck.

Answer 3

It's highly adventageous to find a Chevrolet stock roller hydraulic cam 350 truck block as the metallurgy is better. Toss the stock heads and replace with the Chevy Vortec # 25534421 - 185 cc small intake port heads or the 25534431 215 cc large intake units. Although there are several good companies who make aftermarket heads, few will give low rpm velosity gains that these heads will give you off the shelf. A street motor today needs torque right now, not 3,000- 5,000 rpm. which happens with large cc intake port cylinder heads. Go with flat top pistons as your compression ratio will be very close to 10.1 with the Vortex heads with the 66 cc combustion chambers.

No one will agree with this but Holley now makes a new double hung vacuum secondary 670 cfm. carburetor which will give you great throttle resonse. The mechanical secondary four squirters are a minus on the street. Chevrolet as well as Edelbrock makes four barrel intake manifolds that must be used with the Vortec heads.

Inquire from a cam manufacturer exactly what car the motor is going in (weight, transmission and final drive ratio) before choosing.

Have the truck rods reconditiond to make sure the big ends are perfectly sized. Choose forged pistons with two valve reliefs should be the same distance from the wrist pin holes to the top surface. The valve reliefs may need to be re-cut for the particular camshaft you plan to use.

If you want a winner, block preperation is a must. A top bore and hone job must be done to match the ring manufacturer recommendation. Check the decks by installing the crank and alternately button the same rod / piston combination in each corner to check the deck with a tenth dial bridge indicater. Ocassionally, one deck taper runs high on the #1 piston hole to low on the #7 cylinder. The opposite deck may taper low on #2 cylinder and gain to #7 cylinder. Number the deck corners in to four numbers such as .0023 #1.cylinder to .0093 # 7 cylinder. Your goal is a .0000 deck on both sides.

It's virtually impossible to bolt together any motor without all parts working with each other instead of guessing what should work. Rely on an professional engine machine shop to get as close to the horsepower you want.

As a couple of other guy's have said a there are several versions of the 383's in the GM Performance Parts 2007 Catalog part # 19170580 at your local Chevrolet dealer. The warranty has been increased in January to 2 yrs. or 24,000 miles. Although none are near 500 hp. they will get your attention do to the unreal bottom end torque and that's the name of the game today.

Answer 4

To build a 500 h.p. 350, you'll have to start with a clean slate. The block, and maybe the crank, will likely be the only existing parts used, but 500 h.p. is definatly possible. On small block Chevy's, it's all about the heads. You can get there with a good GM casting and a lot of port work, but you'd be time and money ahead to go with aftermarket heads. Once you decide on heads, assemble a valve train, and induction to compliment the flow characteristics of the heads. The head manufacturer usually has data on several cam grinds and intake setups that are dyno proven performers with their particular heads. The worst thing you could do is try to mix and match parts on your own. Manufacturer's have tech guys on staff just for that purpose. Other than that, build the short block stout enough to handle the power, torque, and desired r.p.m. range, and have fun!

Answer 5

To get a 350 V-8 to push 500 hp you will need heads that flow somewhere around or above 250 cfm. This means aftermarket heads, a completely forged rotating assembly to spin it fast enough to move that much air, a valve train that is stable at high rpms, and a cam to match the heads. 4 bolt mains have no effect on hp. Most engine builders will need a 4 bolt block to put something together that will stay together. (not all) Have fun.

Answer 6

You're better off using a bigger engine, 383ci, or even better, a 454. Anyways, you can start by building up the engine. Forged pistons and crank, bore out the cylinders, race cam, built heads, stronger head gasket, stronger high pro connecting rods, a valve jobs, high performance lifters. Once you have a built engine, you're ready to add real horse power. First, go with a Procharger Supercharger. These will add hp like none other. Get a nice flowmaster exhaust to help the engine breathe. Inject Nitrous directly into your super charger, and last but not least, get a performance chip. Good luck! (oh, convert it to more barrels on the carb)

Answer 7

you could bore the block to a larger diameter and install larger pistons.

Answer 8

may be from the junk yard or from ebay.com

Answer 9

Buy this book on ebay

http://cgi.ebay.com/ebaymotors/HOW-TO-HOTROD-SMALL-BLOCK-CHEVY-BOOK_W0QQcmdZViewItemQQcategoryZ34214QQihZ019QQitemZ290116916651QQrdZ1QQsspagenameZWDVW

Answer 10

change carbuator...install headers