I find it a bit tedious reading about these diesal electric drive systems some people are using so what do you have? If you have a dyno sheet post that too please.

Mine is simple. 427 9.25 or 9.5 CR and a middle of the road cam. 276-284 duration-.544 lift. Modified 850 Q-jet. Combustion chambers were equalized and polished. Forged stuff for innards. All others are stock.
I guess torque and hp to be a low of around 370 or so. Going by other low CR BBs. Notice I'm not claiming 500 hp?
I also estimate my power isn't at all rpm points but only at max. I don't get 370 hp at 1000 rpm. BUT I do get a considerable slice of the cheese down there.

I can't spin the tires but for some reason the car just accelerates instead. Damn! Since the goal was to drive this car on the street thats what I built it for. No Hp built so high its never used and no unbelievable CRs on pump gas.

All comers welcome... street, street strip or strip only. Just be sure to include that

Please no magic small blocks producing 500 hp from 2000 -7000 rpms.

 

why no magic sb? im over 500 at the flywheel. to many folks in this forum underestimate the small block. the big blocks carry a certian false prestige. im not knocking bb, but dont be surprised when you get beat. todays tech and $ will make any engine work well

 

Not 500 hp SB. Those are fine. Magical SB that produce the same amount of power through the whole rpm range. I think some people need to choose. Does the engine produce 500 hp at 6000 rpm or 2 grand? it aint both. Building like this means you lose at one end or the other and it don't make a twiddle what the engine is you started with. If I'm wrong then this thread is perfect for proving me wrong.
And yes I agree a SB can produce a lot of power with a lot of $$. But so can a BB. This isn't a slamming contest on SB vs BB just a built engine comparision.

Trying to do 3 things here. Show the large difference in engines people are using.
Have kind of an informal data base for those who are trying to decide on what to do or get.
Shake out the magical engines since several 350s all built the same should have roughly the same performance. Back to the use of magical shelaylees which I have yet to find in Jegs.

 

ok , im proud of this because its my first since i got custody of my daughter, so to me this is a dream come true. 388, only thing stock is the block, forged crank, rods, coated pistons, all arp fasteners, 7 qt. oil pan with scrapper, motown sportsman -II heads 2.08/1.90 valves, 64 cc combustion chamber,10 .5.1 comp, heavy duty pushrods, crane gold rockers, crane, .525' lift cam, air gap manifold, 850 double pump, speed demon carb, k&n filter top aircleaner. did i use enough commas?

 

Mines simple a street engine that sees occasional track use, Basic LS-4 internals (cam was changed with ovehaul with last owner so it's an unknown but mild, probably LS-5) heads were off but not known if they were shaved so compression is going to be between 8:25-8:5, the heads I'm sure are stock valves and ports but can not confirm, it does have roller rockers and an an aluminum L-36 intake that I cleaned up the ports a bit, Lars rebuilt quadrajet (750cfm model), K&N filter and extreme lid. Had a performance shop rebuild and recurve my distributor (deffinitly helped). 2 1/8" sidepipe headers along with hookers new high flow mufflers. It runs very well for the little work that has been done, oh yea completely desmogged as well. If I had to make an educated guess at numbers I'd say 330hp at 4800 rpm and 450 ft/lbs at 3000 rpm (net numbers), it's an extremely torquey animal with traction hard to come by, especially since the car went on a pretty good diet. I think with some headwork and a little better cam it should be able to do the 400hp/500torque and still be very enjoyable and mild on the street.


Pat Kunz

 

in my 65;
350 block bored .40 over, 327 large journel crank, KB hyper pistons advertised as 10.5 - 1, edelbrock RPM 64 cc heads, edelbrock RPM hyd. cam, edelbrock 750CFM carb, air gap RPM intake, magnum full roller rockers, MSD ignition. stock oil pan and pump.HP ?
for my 75 pro street project.
454 block ..030 over, SCAT Pro Lightweight 4.25 stroke crank, SCAT H beam rods, ROSS 7.5 comp pistons, ProTopline massaged 360 cc heads, full isky solid roller cam and valve train, weiand 871 blower , dual prosystems 850 double pumper holleys, mallory dist.7 qt milidon pan, HP/HV pump, morose elec WP. still in the assy part of this one. HP ?

 

2. 350/450hp, 4 BOLT MAIN, Dynamically Balanced.
3. Comp cam 230 int/exh. duration .477 int./480 exh. lift
4. Seal Power hypereutectic flat top pistons and rings.
5. Clevite 77 main & rod bearings.
6. Durabound camshaft bearings.
7. Dynagear 3pc. dual roller timing kit.
8. Brass freeze plugs.
9. Fel-pro full gasket kit.
10. Johnson performance valve lifters.
11. Melling high flow oil pump, pickup tube and drive-rod.
12. Melling hardened push rods.
13. GM VORTEC 10.5:1 compression, 1.94./1.50 exh, tapped 3/8" rocker arms
14. 5140 forged LT1 rods
15. Eagle steel crank
16. Professional Products aluminum intake manifold
17. Edelbrock performance Series Q-Jet carburetor
18. Short aluminum valve covers
19. Aluminum timing cover
20. Aluminum Oil Pan

 

Most of the specs are in my signature. Mine is mostly for street but I also enjoy the drag strip and ocasional auto cross. I did a series of dyno runs last February after freshening the engine with new rings and bearings. The picture below shows the engine on the dyno for one of the test configurations. We tested three exhaust configurations: 1) under car open headers, 2)Open Hooker Header side pipes, and 3) Hooker header side pipes with home made low restriction muffler incerts.



The results for three exhaust configurations are shown below. Green is with under car open headers. Red is with open Hooker side pipe headers, and blue is with Hooker side pipe headers with home made 2.5" glass pack mufflers.



The following link will play a movie of one of the dyno tests (5meg). The dyno was trying to pull the moter down below 3500 RPM. Turn up the volume and listen to the music.

http://zl1power.com/small_dyno_movie.wmv

 

My SB isn't magical, just a PITA.

406SBC - 6" H-beam rod, AFR 195 heads ported at 207cc.
10.7:1 CR, XR280R solid roller (242/248 @ .050 .571/.577 110LS)
Full 2.5" exhuast with 1-5/8" headers
Victor Jr, 750 BG Mighty Demon

Track results in sig, sea-level correct 11.0 @ 122mph.

 

I think I've got one of those magical sb's....mainly because it's a good street motor, e.g. gobs of torque........honestly, starting off in 3rd gear is not a problem (oops) and neither is running around on 7 cyls (oops again)......

Specs are simple..........9.3:1 CR, Dart Iron Eagle 180cc heads, 72cc Chambers, 2.02/1.6 valves, Comp Xe262 cam, Performer EPS dual plane, 600cfm holley, stock exhaust manifolds and side pipes.........

All this has given me the magical & estimated figure of 330HP @ 4500 RPM and 360 torque @ 3000 rpm......not easy to spin the tires but then there's no crazy, unexpected 180's either.....

Just a good torquey, magical street motor and I love it

 

mine is a potent street car with limited track use and I have one of those that you say does not get to use all the power. 598 ci BBC with 835 hp and a stump pulling 991 ftlbs all at the flywheel. All aluminum dart block with dart pro 1 heads and all hydr. roller

 

Stock slug of a '72 350... but i get better millage with it than my truck..
Eddie

 

406 small block (400 block bored .030 over)

Forged bottom with H-beam rods and lightweight pistons, Dart Pro 1 Heads with 230 cc intake runners and 64cc chambers, ported, 2.08/1.60 valves, comp cams solid roller with 264/270 degrees .050 duration (300/308 degrees advertised duration), .672 lift (.630 lift + 1.6 ratio Harland Sharp roller rockers), Stud Girdles,oil restrictor (restricts oil flow to the rocker arms and provides more oil to the bearings), 11.72:1 compression. Gross HP is estimated at about 600 HP. RWHP dyno sheets will follow in fall. Hoping for about 440 RWHP after drivetrain and accessory loss.. (20% for automatic tranny + 6% accessory loss)

 

Engine:

seasoned Hi Performance 4 bolt main 2 piece main seal 454 block bored 0.060 over, aligned honed and decked
4130 chrome moly forged 4.25" stroke crank (total of 496 ci)
4340 Eagle 6.385 H-beam rods
JE/SRP 10.65 to 1 forged domed pistons
Edlebrock Performer RPM oval port aluminum heads
Fluid damper harmonic balance
McLeod dual disc clutch with matching aluminum flywheel
Lakewood steel "blow-proof" bellhousing, dialed in for crank concentricity
Performer RPM air gap manifold
Holley HP 1000 carb
NOS 300 nitrous fogger sportsman system
comp cams magnum hydraulic roller, 6.12 lift, 252 dur @ 0.050"
comp cams retrofit hydraulic roller lifters and push rods
comp cams pro magnum chrome moly roller rockers
Manley guide plates
cloyes gear drive system
cloyes cast aluminum timing cover with externally adjustable integral roller
cam button (set for 0.010" end play)
moroso cast aluminum black wrinkle finish valve covers
milodon 8 quart deep sump oil pan
clevite filleted/radiused main and rod bearings

Rear:

3:08 factory gears, custom built with an oversize cross shaft and spider gears
4340 Dropped for axle stub shafts
performance bearings, clutches and seals. heavy duty "big block" half shafts.

Tranny:

Richmond 6 speed w/ hime joint hiem shifter. Has heavy duty "road race" 6th gear, per Richmond's recommendation.
3:28 1st gear coupled with a 3:08 rear makes the tranny
act like a Muncie C/R and a 4:56 rear gear

just a street cruiser... may dyno this fall!

 

These are pretty cool:
http://www.roundengine.com/roundengi...orque_comp.htm