kaijintemma

I am building a 400 stock sbc. It has also been bored .030 over. I am trying to to see how much horsepower it will have. If anyone have a good estimate pls leave a reply. Im getting all of my parts from summitracing.com. Here is the list i plan on getting.
1. Airflow Research (AFR) 1054 - AFR 210cc SBC Eliminator Racing Heads
the combustion chamber is 65 cc and everything is cnc machined
2. 3.75 eagle forged crank
3. 5.7 eagle forged rods
4. COMP Cams 12-772-8 - COMP Cams Xtreme Energy Camshafts
it is an mechanical roller and has a duration of 286 int./292 exh.
5. Keith Black/KB Pistons IC9944KTM030
Piston StyleStep head, with single valve reliefPiston MaterialForged aluminumCompression Distance (in)1.443 in.Piston Head Volume (cc)+23.00cc
6. COMP Cams 98904CR-2 - COMP Cams Elite Race Solid Roller Lifters
7. Holley 0-4779C - Holley Model 4150 Carburetors
Carburetor, Model 4150, 750 cfm, Square Bore, Manual Choke, 4-Barrel, Dual Inlet, Dichromate
8. COMP Cams RPG101 - COMP Cams Magnum Rocker Arm Kits
Rocker Arm Ratio1.6Rocker Arm StyleRoller tip

fireturd350

iTrader: (8)

Try www.camquest.com. it's compcams engine simulator. It even accepts there camshaft exact profiles.

kaijintemma

thanks the people put it in for me and they said it should have something close to 625 hp at 9.5.1 compression ratio

Primered89RS

With the same heads a and the 4/7 firing order swap 303 cam from comp and 11:1 compression with a victor junior intake and 800 double pumper my 383 pushed out 563hp and 589 ft/lbs of torque if this hekps get you in the ball park.

kaijintemma

im trying to get it to run on regular

Primered89RS

Well if you want to run on regular you will not have near enough compression for that cam. I would suggest a hydraulic roller thats still streetable and keep the compression no more than 9.5:1 aluminum heads do help alot with detonation.

kaijintemma

Interesting the tech guy at summitracing actually recommended that cam
sorry i mean by that is im trying to run it on gas not racing gas thats what meant by regular gas
thank you i just called the summitracing ppl
the person on the online chat told me wrong
so im running a COMP Cams 12-906-9 - COMP Cams Drag Race Camshafts
at 10.5:1 compression ratio

Primered89RS

with 93 youi can probably squeeze 10:1 compression and that would be sufficient for that cam. That cam would make excellent power it just needs adequit compre\ssion to run properly

kaijintemma

yea I told needed a bigger came the first to get close to the hp i trying to get. I am trying to get close 2 600hp. They were saying that i needed a higher duration in have to hve around 7000 rpm

kaijintemma

yea I told needed a bigger came the first to get close to the hp i trying to get. I am trying to get close 2 600hp. They were saying that i needed a higher duration in have to hve around 7000 rpm
should i use a COMP Cams 12-705-8 - COMP Cams Magnum Solid Roller Camshafts or COMP Cams 12-906-9 - COMP Cams Drag Race Camshafts. It is going to be a weekn car. It is going to be doing a lot of strip racing mostly Just a pleasure car you kno.

Primered89RS

What are the specs on both? I suggest the 4/7 firing order swap cams I was very pleased with mine.

kaijintemma

1.COMP Cams 12-705-8 - COMP Cams Magnum Solid Roller Camshafts
Cam Style Mechanical roller tappet
Basic Operating RPM Range 3,000-7,000
Intake Duration at 050 inch Lift 255
Exhaust Duration at 050 inch Lift 255
Duration at 050 inch Lift 255 int./255 exh.
2.COMP Cams 12-906-9 - COMP Cams Drag Race Camshafts
Basic Operating RPM Range 4,500-7,500
Intake Duration at 050 inch Lift 276
Exhaust Duration at 050 inch Lift 284
Duration at 050 inch Lift 276 int./284 exh.

Primered89RS

Personally I think its to big. I would go with something around 240/248 duration in a hydraulic roller but opinions are opinions everyones will be different you will make more power with the cam your looking at but it will not be very streetable.

Orr89RocZ

iTrader: (20)

Good combination of parts, except the pistons.....why go with a dish? You have 9.6 to 1 compression now. Its gonna feel abit lazy. Likely will run on 87 octane but that combo wants closer to 10.5-11 to 1 and premium gas.

Possibly could use 800-850 carb as well but a good 750 wouldnt be too bad. With the lower compression it may be better with the 750.

Wont get 600 hp with that compression I dont think. 540-550 is possible. It may come around and do 560-570 with a good intake. What intake manifold? Normally i'd go single plane for that combo at 11 to 1 compression but at 9.6, a ported dual plane may be optimal, like the RPM Air-gap. Either way you'd want a fully ported RPM manifold to go with those heads. 15-20whp there in a ported manifold over box stock.

Good cam for the setup if it was closer to 10.5 or higher compression. Similar duration as to my friends 406 with similar heads, but he's EFI. Made 521WHP thru a 6spd. Likely well over 600hp on motor. Closer to 11 to 1 compression.

kaijintemma

yea i ended up buying different pistons and cam i ended up getting for
1. my COMP Cams 12-772-8 - COMP Cams Xtreme Energy Camshafts
Mechanical roller tappet
Basic Operating RPM Range 3,000-7,000
Intake Duration at 050 inch Lift 248
Exhaust Duration at 050 inch Lift 254
2. and for the pistons i got some Ross Pistons 99490 - Ross Racing Forged Pistons
Bore (in) 4.155 in.
Bore (mm) 105.537mm
Piston Style Dome, with two valve reliefs
Piston Material Forged aluminum
Compression Distance (in) 1.120 in.
Piston Head Volume (cc) -3.00cc
and it was thinking about gettin a 800 carebutor
and it is at 10.5:1

kaijintemma

is this intake manifold is good Weiand 7532 - Weiand Team G Intake Manifolds
im trying to find an intake that operates around the same as my cam n this operates at Engine Block Style Stock/OEM standard deck
Carburetor Quantity One
Intake Style Single plane
Basic Operating RPM Range 2,800-7,800
Intake Finish Natural
Intake Material Aluminum
EGR No

or Summit Racing 03-0104 - Summit Racing® Intake Manifold and Installation Pro Packs
Intake Style Single plane
Engine Block Style Stock/OEM standard deck
Basic Operating RPM Range 2,800-7,200
Carburetor Quantity One
Intake Material Aluminum
Intake Finish Natural
EGR No

jose lt1

estoy armando un motor lt1 con camras de aluminio bien portiadas 200cc adm con una ralacion de compresion de 11.2 a 1 una leva 12-705-8 carburador 850 cfm
camrin de 7200 RPM EN UN CHEVY MONTE CARLO QUE TIEMPO CALCULAN QUE HAGA