Cobb Racing Enterprises

10/09/2026

Racetrack results today for our good customer Robert Eubanks in his 1st Gen Camaro this morning at Beech Bend Raceway in Bowling Green, KY.

Car Weight: 3140 lbs
Density Altitude: 1760 ft ( 3.67% correction)
Corrected HP ( Dynotune Engineering, LLC ) - 1013 hp - dyno sheet in pictures
Wallace Racing Calculated Hp at Flywheel in today's weather: 983 hp
Corrected Hp adjusted for 3.67 % factor: 975 hp

We should be mid 5.30s with the density Altitude around 600 to 700 ft.

10/06/2026

Great 436 cid SBC combination on the dyno yesterday evening at Dynotune Engineering, LLC built by our good friend and customer John Perry .

791 hp at 7200
637 tq at 5500

Dart SHP Block
4.165 bore
4.000 stroke
6.000 rod
Custom CP pistons
14.98 compression
1.0, 1.0, 2.0mm rings
274/284 111 LSA .825/.780
Jesel Sportsman Steel Rockers
245 Afr Heads
Edelbrock 2970 by Vector Performance
2.125 blade carb
1.750 APD Black Widow Spacer
Billet GZ MOTORSPORTS Vacuum Pump
Q16 fuel
1 3/4 - 1 7/8 @ 32 primary length
3 1/2 collectors

10/02/2026

09/30/2026

Here are more details on my personal 433 cid engine.

1030 hp at 8800
673 tq at 7400

980 avg hp 7000 - 8800

Engine Details
433 cid
4.220 bore
3.875 stroke
Dart Iron Eagle Block - 8.999 deck
Callies Magnum 3.875 Stroke Crankshaft
350 Mains, Honda Rod Journals, BBC Snout
Callies Ultra I Beam Rods 6.000
Honda Journals, .927 pin
DLC Wrist Pins - .200 Wall
Diamond Pistons - Custom from mold
16.8 Compression 9mm, .9mm, 2.00mm Rings- Total Seal
55mm camshaft - Comp Cams
282/297 115 LSA 1.005 /.955904 lifters -BAM DLC
13 Deg Profilers - Chad Speier SRH
3.15 MCSA
2.200 / 1.600 Titanium Valves
50 deg Valve Job - BES
PSI DR1255RML SPRINGS - Intake
PSI DR1254RML SPRINGS - Exhaust
1.850 / 1.800 Rockers - TD Machine 775 offset , 1.750 Pivot Length
7/16 - .168 Wall Intake Pushrods
1/2 - .200 Wall Exhaust Pushrods
2 piece Oil Pan / Billet Valve Covers - Williams Performance
Single Stage External Oil Pump - Dailey Engineering
Brett Miller R420.2 Manifold - Burr Finish
Vacuum Pump - Star Machine
2.350 blade Gen III HOLLEY CRE CUSTOM
APD Black Widow Spacer
2 - 2 1/8 headers at 27 inches primary
Merge Collectors 2.750 Choke/ 3.50 Outlet
Q16 Fuel

09/28/2026

Twin Blade Carb Spacer $225 shipped in Continental USA.

09/27/2026

Photo gallery of some custom engine packages.

More upcoming builds coming together the remainder of this year. A couple of 4.5 bore space SBC's 444 cid - 526 cid along with 468 cid MBE billet splayed valve engine. Super cool 532 BBC with Edelbrock X96 Cross Ram with four two barrel carbs.

Stay tuned for build updates as we move forward.

09/23/2026

Found a little time this afternoon to put my personal Practice Motor V2.0 back on the dyno for a health check and test a few changes. It hasn't been cranked since December 2022.

Updated results are shown below.

1030 hp at 8800
673 tq at 7400

980 avg hp 7000 - 8800

We made a small change inside the manifold along with different merge collectors with a different carb and spacer combo.

Engine Details
433 cid
4.220 bore
3.875 stroke
16.8 Compression
55mm camshaft 904 lifters
13 Deg Profilers - Chad Speier SRH
Brett Miller R420.2 Manifold - Burr Finish
2.350 blade Gen III HOLLEY CRE CUSTOM
APD Black Widow Spacer
2 - 2 1/8 headers at 27 inches primary
Merge Collectors 2.750 Choke/ 3.50 Outlet
Q16 Fuel

09/19/2026

**** SOLD ****

New 1400 CFM Twin Blade Carb with custom Anti-Reversion Spacer.

$1550 Shipped in Continental USA.

09/11/2026