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Old 09-04-2007, 04:43 PM
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build me a 400hp 350

ive decided against the 383.

i have decided to go with a 350 i need atleast 400 hp at the rear wheels and as much torque as possible.

transmission is a Hughes Performance 4L60 rear is a ford 9 inch (gears are undecided need some help with that)

tires will be 26 inches tall car is 3500 pounds.

a mpg friendly engine will be a plus. really no less than 15 would be preferred.


if any other info is needed please let me know.

intake and carburetor are also needed would like a semi tall intake to make use of the 4 inch cowl. aggressive sounding cam is a plus but nothing thatll hurt my mileage greatly

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Old 09-04-2007, 05:27 PM
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you are kidding, arent you?
let me know if you get this done.

Larry
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Old 09-04-2007, 05:55 PM
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that means you need 450 hp @ the crank.

sure it can be done. but its going to cost you some $$$


425HP - 450HP 350: Runs on 92 octane fuel and is suitable for daily driving and weekend racing. Completely machined 4 bolt main 350 block, (cleaned, magnafluxed, shot peened, bored, honed, align honed and square decked with all threads cleaned and chased) fitted with ARP main bolts, New cast steel crank, high performance rod and main bearings, new cam bearings, forged TRW pistons, iron ductile rings, new forged 5140 rods with ARP Wave Loc bolts, new performance cam, new lifters, new double roller timing assembly, chrome moly push rods, Edelbrock aluminum Performer RPM heads, aluminum roller rockers, ported Edelbrock Victor Jr. intake manifold, new high volume oil pump and HD drive, new nodular iron harmonic balancer & flex plate. Comes complete with new Holley 750 carb, chrome timing cover, chrome oil pan and is assembled with stainless steel bolts and Fel-Pro gaskets. Engine is fully balanced and ready to eat crate motors for lunch! $5,999 . Not powerful enough for you? Then have this engine fitted with big breathing Victor Jr. heads and a killer roller cam for an additional $900 and blow the doors off everyone in your area!

http://badassengines.com/engineprices/chevsb.html
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Old 09-04-2007, 06:09 PM
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yea, your asking for alot haha and yea i think it can be done too. I think your going to need alittle more than 450 at the crank for 400 at the wheels, epically with that 4L60. I think its gunna cost alot to get all your goals in. I vote LS7. Its all aluminum, 500+ HP and and 470+ TQ, and you'll get 20+ MPG - newer corvettes get 25+. You can pick one up for 13K I think, and of course it'll cost more for all the wiring and modifications to get it in whatever your project is. I say this cause i think you will have a difficult time achieving everything with a carburated 350.

Last edited by Warrant; 09-04-2007 at 06:17 PM.
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Old 09-04-2007, 06:26 PM
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my bad, warrant is correct 480 hp @ the crank - 20% drive train loss = 400 @ the wheels


"Bullet proof" 450HP - 510HP 350: Our "street" version of this engine runs on 92 octane. Same standard features as our 450 HP 350 but with forged 4340 steel crank, forged 4340 steel H-beam connecting rods, special hardened Federal Mogul bearings, JE light weight forged pistons with floating pins and ported Edelbrock Victor Jr. heads and a larger, better breathing cam. $7,499 .

http://badassengines.com/engineprices/chevsb.html

Last edited by 383silverado; 09-04-2007 at 07:30 PM.
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Old 09-04-2007, 07:15 PM
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how doable is it if i robbed the tpi setup off my brothers old camaro.


my main goal is to get this car in the low to mid 12's.

if need be i an shave about 200 pounds of weight of this car
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Old 09-04-2007, 07:19 PM
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Quote:
Originally Posted by 383silverado
that means you need 450 hp @ the crank.

sure it can be done. but its going to cost you some $$$


425HP - 450HP 350: Runs on 92 octane fuel and is suitable for daily driving and weekend racing. Completely machined 4 bolt main 350 block, (cleaned, magnafluxed, shot peened, bored, honed, align honed and square decked with all threads cleaned and chased) fitted with ARP main bolts, New cast steel crank, high performance rod and main bearings, new cam bearings, forged TRW pistons, iron ductile rings, new forged 5140 rods with ARP Wave Loc bolts, new performance cam, new lifters, new double roller timing assembly, chrome moly push rods, Edelbrock aluminum Performer RPM heads, aluminum roller rockers, ported Edelbrock Victor Jr. intake manifold, new high volume oil pump and HD drive, new nodular iron harmonic balancer & flex plate. Comes complete with new Holley 750 carb, chrome timing cover, chrome oil pan and is assembled with stainless steel bolts and Fel-Pro gaskets. Engine is fully balanced and ready to eat crate motors for lunch! $5,999 . Not powerful enough for you? Then have this engine fitted with big breathing Victor Jr. heads and a killer roller cam for an additional $900 and blow the doors off everyone in your area!

http://badassengines.com/engineprices/chevsb.html

damn that looks good and is just alittle higher than what i wanted to spend i wonder what the actual mileage is
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Old 09-04-2007, 07:34 PM
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go down to racing math

http://www.golenengineservice.com/html/calculators.html



http://golenengineservice.com/calc/calchpe.htm
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Old 09-04-2007, 09:00 PM
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If your building it good luck making 400hp at the wheels maybe 385hp is a more realistic goal. You better know a 50 year old nascar engine builder and make really good friends with your local machinist.To make those kinds of numbers a high compression ratio and high rpms are a must and if you want to run pump fuel you have to watch out. Make sure you don't go over 9.8:1 with iron heads or 10.5:1 with aluminum. I prefer iron as it takes a lower comp ratio to achieve the same power but they are close to 75 pounds each so your choice. Your gonna need alot of lift in your cam so chose your heads wisely, vortec castings have absolutely fantastic flow but you can't have a much higher lift than 470 or you risk damage. I use these in my 350 and I have 360hp and 427 ft/lbs at the rear It took a full winter and 2 trips to the dyno to get those numbers. My 78 camaro make low 13s with street tires. Cost me $2500 in tall order and I ripped out all the non-essentials including the 21 gallon steel beast of a gas tank and put in a 15 gallon fuel cell.
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Old 09-04-2007, 10:14 PM
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Here are 108 dyno-proven small block Chevy builds. Go through them, pick out the 350 build you like and duplicate the parts.
http://www.ryanscarpage.50megs.com/combos1.html

By the way son, if you are worried about mileage, you may be on the wrong forum.
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Old 09-04-2007, 10:19 PM
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Quote:
Originally Posted by Urbanfarmer
If your building it good luck making 400hp at the wheels maybe 385hp is a more realistic goal.
your splitting hairs 15 hp aint very much.
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Old 09-04-2007, 11:15 PM
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according to golen calculator i need 400 a the flywheel to get me in the 12's.


but
this engine from the link above caught my eye

Combo 93 is a GM ZZ4 350 cu. in. engine that has a mechanical roller cam
and AFR 195 heads. This potent combo puts out 523 HP and 454 ft-lbs of torque. Awesome for the street.

Displacement: 350 cu. in.

Carburetor: Speed Demon 850, with a 1 in. open spacer

Heads: Air Flow Research 195, with 2.02/1.60 in. valves.

Intake: Edelbrock Victor Jr.

Camshaft: Comp Cams mechanical roller, with 0.578/0.584 in. of lift (with 1.52:1 rockers) and 242/248 of duration @ 0.050 in. of lift.

Rockers: Comp Cams Pro Magnum roller, 1.52:1


Exhaust:
1 3/4 in. headers with 3 in. Flowmasters

Pistons: GM high-silicon aluminum

Rods: stock

Crank: GM forged

Distributor: GM HEI

Timing: 35

Comp. Ratio: 9.97:1

MAX HP: 523 @ 6600
MAX Torque: 454 @ 5200

i have a idea any kind of mileage is toast with this setup. would i gain anything using a tpi setup
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Old 09-04-2007, 11:51 PM
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your going to need a 3000 stall converter or so with that high of a duration cam.
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Old 09-05-2007, 12:24 PM
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This is what David Vizard says.
Four bolt main +0.030 over and decked
Flat top Speedpro #l2490f 30 forged pistons
Felpro head gasket CR: 10.1:1
Stock forged crank, 5.7 stock pushrods, Moroso basic street oil pan
Comp Cams 280 H on 108 LCA, 4 degrees advanced, Sealed power lifters
Comp Cams Magnum roller tip, 1.6 on intake, 1.5 on exhaust and a roller timing set
A set on 186s with bronze guides, 2.02 intake, 1.6 exhaust (world products sportsman II's would serve perfectly)
Edelbrock Victor JR intake
Holley 750 re-worked to 820 (new butterflies and what not)
4 Inch K&N element
MSD ignition and 1 5/8 headers by walker

Cost him $1888 but he did all the work in porting and machining, your looking at a $2500 motor Making 410 ft/lbs @4500 and 408 hp @6200 at the flywheel.
BTW make sure you run premium with some octane booster since the Comp Ratio is pretty high for Iron heads and block.
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Old 09-06-2007, 12:11 PM
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The cheapest, easiest, most reliable way to get 400RWHP (470-500 gross BHP) out of a streetable pump gas 350ci motor is to supercharge it.
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