SST4530

You guys are on the right track but your going to skew the results. First off there is a point where it's no longer cost effective to compare the two. Once you set the baseline HP so high that the SB guy has to use 18 deg heads then you've skewed the contest in favor of the BB. Why not keep like I said at 700 or 750HP. Would it be because a BB can't make HP dollar for dollar until you get over that magic number? :wink:

camaro74454

It's a tough call with the SB's running BB cubes...I'de just go with the 700 750 hp thing and limit it to that.

SST4530

Right, once you start stroking and having to add anything other than a 23 deg head then nothing is cheap. If you stay within the stock stroke and head configurations and stay under 415 CID then I'll go against BB any day long as we have HP cap. What I'm saying is I don't think you can build 750 HP BB cheaper than a SB. and even if you did the weight to HP factor comes into play.

SST4530

Simple - Weight! :wink:

bjuice

LOL....bLITTLE i was waiting for someone to come back with that one...i was planning my way around this question 2 days ago with my 1st reply on this post..

the ET 10.'s were brought into the Equation....i came up with the 3400 lb rule cause thats what would take in most street trim cars W/dRIVER....all we did was figured out how much HP it would take to power a 3400 lbs car into the 10.0's....and i think wes came up with 670 hp to the rear wheels...and i calculated 20% loss of HP thru the drive train and chassis which would put close to 840 hp at the crank....before these calculations were posted i used a nice round figure of 900 hp...seems i wasn't too far off...
but i would not hesitate to back this up to 750hp and the BBC chevy still comes out on the better side......making 750 HP on NATURAL ASPIRATED 23 degree SBC is still accomplishing a great feat......i have had some ball busting alumin rod 406's that just made 660 hp 750 hp on a 23 degree motor is very attainable but you would not do it with run of the mill parts and a so so- mechanic......my experience owning and spectating..


here is Wes finding he posted a few pages back.....i promise i didn't load up the Contest before the debate started..it only seems that way becuase a BBC makes so much more HP....lol....


just for the heck of it here is a copy of what SSRE RACING ENGINES sell their 434 sbc 685hp...11x heads...they have a 750 hp version 15 degree motor.
i'm am sure this will vary a little bit from builder to builder but this is a good idea of what a top quality 434 SBC 23 Degree motor will make..now back this up to 415 CI and take 40 hp off this...which will come in at 650 hp....

I AM NOT ENDORSING SSRE..I AM ONLY USING THEIR ENGINE AND PARTS AS A HP EXAMPLE.

Dart Little "M" 4 Bolt Race Prepped Block w/Splayed Caps • Brodix 11X Aluminum Heads w/CNC Porting • Eagle 4340 4.000" Stroke Steel Crank • Eagle 4340 6.000" H-Beam 3D Steel Rods • Wiseco 14.1 Forged Pistons • SSRE Custom Roller Cam & Kit • Cloyes Billet True Roller Timing Set w/Torrington Bearing • Pro Series 1.6 Aluminum Roller Rockers • New Motown Dominator Intake • SSRE/Moroso Custom Stroker Oil Pan • SFI Harmonic Balancer • Internally Balanced • Dyno Tested & Tuned • Dyno Sheet Provided
725 HP Version includes: Fully CNC Ported Brodix 227M2 Heads, Custom Wiseco 14.8-1 Gas Ported Pistons w/.043/3mm Rings, Upgraded Cam & Spring Package add $1250

Nitrous version available. Call for details.


Less Carb & Ignition


Options:

950 CFM Holley Carb Package includes: Carb, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine. $ 895

1050 CFM Holley Dominator Carb Package includes: Carb, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine. $ 995

MSD Electronic Ignition Package includes MSD Pro Billet Distributor w/Ford HEI-Style Cap, Bronze Gear, Custom MSD 8mm Wire Set. Dyno Tuned and Calibrated on your engine. $ 395

Dart "Little M" 4 Bolt Race Prepped Block w/Splayed Billet Caps $ 300
Callies Compstar 4340 Forged Steel Crank w/Ion Nitriding $ 150
Callies "All American" Dragon Slayer 4340 Forged Steel Crank w/Dura-Tough Heat Treating $ 495
Callies CompStar 4340 Steel Rods w/ARP 2000 Bolts $ 300
Lunati 4340 Pro Mod Rods $ 425
JE Pro Series 14.1 Pistons $ 75
Taperwall Tool Steel Wrist Pins $ 175
Calico Coated Bearing Package (Cam, Rods & Main) Only Available w/Callies Crank $ 125
Crane Hippo (High Pressure Oiling) Lifters $ 250
Cometic Multi Layered Steel Head Gaskets $ 95
SSRE Stud Girdle $ 200
Jesel Shaft Rocker System $ 925
Jesel Belt Drive (includes additional $175 labor for mandatory block machining) $ 1050
ATI Balancer $ 225
Moroso Pro Pan w/Kickout (adds power and better oil control) $ 200
Moroso Vacuum Pump Kit w/Relief Valve (Installed) $ 895
MSD Crank Trigger Ignition Upgrade $ 250
SpeedTech Liquid Force Nitrous System Installed $ 1750
O-Ring Block w/Stainless Steel Wire $ 175
Additional Block Notching Charge (if required w/optional components) from $ 75
Additional Balancing Charge w/Heavy Metal (if required w/optional components) from $ 100





Brian I show to get 670hp @ the rear wheel on 10.00 ET w/ 136 mph in a 3400# 69 Camaro.
_________________
Wesley

chevguy65

I went to my trusty race calculator at wallace racing and it shows you only need 597 hp at the flywheel to run a 10.09 @ 130mph in a 3400 lb car.

I say it is a lot cheaper to build a BBC to get that HP and TQ needed, but some guys just got to go small block.

camaro74454

I would think that 600 hp should get you to the 10's...thats a decent BB and a really worked SB. I know you guys will laugh at it..but a GMPP 572 will get a 3400 car to the low 10's..

woodsman

Carl I was using Tim McAmis race cars in cool stuff there E.T. Calculator and if you put 3400# an 670hp rear wheel it comes up with 10.00 @ 136mph so I dont know which one is more correct. Your guess is better then mine.

cepx111

Big Block all the way!!!!!!!
You will be small block guy till you run a big block then you'll never go back. Think of them (small blocks) as starter homes...
Some people never move out and others move on to bigger and better things.

mytmouz

Well, I had a 67 Chevelle once that had a low compression .060 350 with stock heads and a small solid camshaft, pulled it out and installed a 350 hp 396 with a solid cam. the 350 ran circles around it.

Next up is a 68 Camaro, had mini tubs, ladder bar rear, fiberglass front cap. This one had a L88 427 style engine, had a set of Brodix heads. with a 300 shot of NOS it would run a 9:30. A 175 shot on a 406 in the truck in my avatar went a 9:23. This was a side by side comparison, I won. :lol:

I like big motors, just can't afford 'em. If you can't run anything but 23# heads on the small block to do a comparison, then the big chief motors gotta go...