Bracket Talk
A goal finally realized. 900hp
October 23, 2024, 01:58 PM
SpeierRacingHeadsA goal finally realized. 900hp
So one of my goals has been to make 900hp with a std runner true 23º SBC. We accomplished it on Cobbs Racing Stuska last week. It was a group effort and it's a beast! It was for sure a max effort build!
900.8 hp / 648 tq
Peak HP = 8000 RPM
1.038 correction
Dart Iron Eagle Block
.391 Raised Cam
60mm babbit bearings
4.223 bore
4.125 stroke
Lunati Pro Series Crank
Dyers 6.125 rod
.866 DLC coated pins
Custom ROSS PISTONS
Line 2 Line Coatings
.9mm, .9mm, 2.00mm Total Seal Piston Rings
Trend Performance Products 7/16 - .165 wall pushrods
Charlie's Custom Oil Pan
Mellings Billet Shark Tooth Oil Pump
ATI BALANCER
JESEL .904 Tie Bar Lifters
JESEL BELT DRIVE
COMP CAMS 60mm Cam
23 deg Profiler Heads by Speier Racing Heads
2.180/1.570 3.05in² MIN- 3.18in² AVG CSA
Hulk23 intake port matched AS-CAST
Star Machine Vacuum Pump
Custom 2 Circuit Holley Gen III DOMINATOR by Cobb Racing Enterprises
MSD Crank Trigger, Wires and distributor.
Driven XP2 Oil
VP Q16 Fuel
October 23, 2024, 02:20 PM
CURTIS REEDChad, when is he going to put it in the Nova? That is quite an accomplishment for you, Cobb and everyone involved.
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
October 23, 2024, 03:15 PM
SpeierRacingHeadsquote:
Originally posted by CURTIS REED:
Chad, when is he going to put it in the Nova? That is quite an accomplishment for you, Cobb and everyone involved.
They are getting the engine tomorrow so this weekend it will be in. And Thanks!
October 23, 2024, 04:06 PM
markemarkImpressive! Do you know what the carb rated flow #’s are?
October 23, 2024, 04:58 PM
DragRaceResultsThat's pretty cool. Congrats
October 23, 2024, 05:39 PM
1leg1.95HP per CI NA out of 23 degree. very impressive work.
Meziere Tech.
Make sure your water pump is on whenever you check your coolant level.
October 23, 2024, 06:41 PM
SpeierRacingHeadsquote:
Originally posted by markemark:
Impressive! Do you know what the carb rated flow #’s are?
I will find out.
October 23, 2024, 07:59 PM
markemarkAnother question. Is the (in HG) vac reading correct? At -21 is this sustainable? Thought pumps were regulated much lower than this…. but I don’t use one, just evac, curious.
October 23, 2024, 08:00 PM
SpeierRacingHeadsquote:
Originally posted by markemark:
Another question. Is the (in HG) vac reading correct? At -21 is this sustainable? Thought pumps were regulated much lower than this…. but I don’t use one, just evac, curious.
Yes it's correct.
October 24, 2024, 06:53 AM
Curly1quote:
Originally posted by markemark:
Another question. Is the (in HG) vac reading correct? At -21 is this sustainable? Thought pumps were regulated much lower than this…. but I don’t use one, just evac, curious.
My SB2 was pulling 22-23 on the dyno, I have dropped it down some since. For Drag racing probably would not hurt it short runs but that may not be good on NASCAR or other motors that run 500 miles like that?
A vacuum pump can help ring seal and general seal of your motor while helping pull moisture out of motor.
900 Hp out of a 23* Standard runner head is impressive for sure. What was the RPM on that?
https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.
Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.
4X NE2 CHAMPION. 2020 TDRA NE2 Champion
October 24, 2024, 09:06 AM
SpeierRacingHeadsquote:
Originally posted by Curly1:
quote:
Originally posted by markemark:
Another question. Is the (in HG) vac reading correct? At -21 is this sustainable? Thought pumps were regulated much lower than this…. but I don’t use one, just evac, curious.
My SB2 was pulling 22-23 on the dyno, I have dropped it down some since. For Drag racing probably would not hurt it short runs but that may not be good on NASCAR or other motors that run 500 miles like that?
A vacuum pump can help ring seal and general seal of your motor while helping pull moisture out of motor.
900 Hp out of a 23* Standard runner head is impressive for sure. What was the RPM on that?
Made peak HP at 8000.
How much head/manifold do you need for a 462 to peak at 8000? A LOT!

October 25, 2024, 07:02 AM
Curly1quote:
Originally posted by SpeierRacingHeads:
Made peak HP at 8000.
How much head/manifold do you need for a 462 to peak at 8000? A LOT!
That is very nice. A lot of big blocks with more cubic inches do not make that much. Care to give a little more information on cam?
https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.
Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.
4X NE2 CHAMPION. 2020 TDRA NE2 Champion
October 25, 2024, 09:22 AM
SpeierRacingHeadsquote:
Originally posted by markemark:
Impressive! Do you know what the carb rated flow #’s are?
1350 cfm
2.350 blade
2.020 venturi
Holley Gen III DOMINATOR
Converted to 2 circuit
October 25, 2024, 09:22 AM
SpeierRacingHeadsquote:
Originally posted by Curly1:
quote:
Originally posted by SpeierRacingHeads:
Made peak HP at 8000.
How much head/manifold do you need for a 462 to peak at 8000? A LOT!
That is very nice. A lot of big blocks with more cubic inches do not make that much. Care to give a little more information on cam?
I do not know the cam specs, that was designed by Chris. Just know it had lots of lift in it.
October 25, 2024, 10:06 AM
CURTIS REEDWould be crazy for Chris to give out cam specs but I bet becoming a customer would get you one.

____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
October 25, 2024, 10:48 AM
SpeierRacingHeadsquote:
Originally posted by CURTIS REED:
Would be crazy for Chris to give out cam specs but I bet becoming a customer would get you one.
I talked to Steve last night and Chris thinks there is 20 in the manifold. So being the type of guy he is, pulled it off to be ported. Going back on the dyno. Stay tuned!
October 25, 2024, 10:50 AM
CURTIS REEDquote:
Originally posted by SpeierRacingHeads:
quote:
Originally posted by CURTIS REED:
Would be crazy for Chris to give out cam specs but I bet becoming a customer would get you one.
I talked to Steve last night and Chris thinks there is 20 in the manifold. So being the type of guy he is, pulled it off to be ported. Going back on the dyno. Stay tuned!
20 would be huge to pick up from that manifold. From what I saw on them, they're pretty good to start with.
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
October 25, 2024, 04:01 PM
DANGERBOYWhat size header? Very impressive
October 25, 2024, 04:48 PM
SpeierRacingHeadsquote:
Originally posted by DANGERBOY:
What size header? Very impressive
2-2 1/8 w/3.50 out collector