Dart "as cast" test
Originally Posted by Dart331Stroker
The manifold was an out of the box manifold. The SAE corrective factor really makes this motor look to be down in power compared to what you guys have seen on chassis dynos and such. The whole factor here is to compare another companies (one that is mentioned often on here) cnc fully ported heads versus a run of the mill as cast Dart head. Dart is going to offer fully ported heads that will be priced right in line with the rest and after looking at how well the as cast does versus ported heads, Dart should be fine in the cnc market.
when are we going to see some of these fully ported heads?
TECH Apprentice
iTrader: (3)
Joined: Nov 2005
Posts: 387
Likes: 1
From: Tinker till it blows, then back it off a notch, maybe!!
Originally Posted by WKMCD
Who is making dual springs for the DART heads or do drop ins work like PP Golds and 921's?
Originally Posted by WKMCD
Who is making dual springs for the DART heads or do drop ins work like PP Golds and 921's?
Thread Starter
TECH Junkie
iTrader: (3)
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
Sorry can't help you with that one. We are testing heads for our crate engine's. They are 402ci at this time. We may add some other sizes in the future, but it probably will not be the 346.
Kurt
Kurt
Originally Posted by JS
Kurt can u test the Dart 205 on a 346CI with small cams and medium cams too?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo Thread Starter
TECH Junkie
iTrader: (3)
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
Dart 225--------competitive priced 5.3 head--Dart head with carb/Eldebrock intake(-------SAE Correction--------------)
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
Originally Posted by red90cobra
Kurt do you have the results after touching them up and doing bigger valves?
Originally Posted by 427
Dart 225--------competitive priced 5.3 head--Dart head with carb/Eldebrock intake(-------SAE Correction--------------)
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
wish you'd spin it another 500rpm
looks like gains are going up nicely as rpm increases.
Originally Posted by 427
Dart 225--------competitive priced 5.3 head--Dart head with carb/Eldebrock intake(-------SAE Correction--------------)
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
rpm--tq---hp---tq---hp---tq---hp--tq--hp
3000-428-244--407-232--387-221--404-231
3500-412-275--399-266--392-261--399-266
4000-465-354--447-341--444-338--453-345
4500-487-417--472-404--487-417--489-420
5000-490-467--472-450--501-476--504-480
5500-473-496--459-480--484-507--489-512
6000-446-510--428-489--454-519--466-532
6100-440-511--422-490--448-521--461-536
6200-433-512--415-490--443-523--459-542
6300-425-510--408-489--435-523--455-546
6400-417-508--399-486--426-520--448-547
The last row of HP and TQ is with mild portwork and 2.08 valves. This is in SAE correction(factory) on a engine dyno. The test was ran with the Holley carb and Edelbrock intake.
That same dyno run in Standard correction (29.92Baro-60F) was 529ftlbs and 575hp.
The actual raw power at the crank with no correction factors on that run was 537ftlbs and 585hp. At the time of the run humidity was 55% temp was 31f and baro was 29.51.
Kurt
Thread Starter
TECH Junkie
iTrader: (3)
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
It is hard to read, but you are reading it right! Power peak on all runs was at 6400rpm or lower.
Kurt
Kurt
Originally Posted by 383ss
am I reading that right? you picked up 27hp@6400 going to a bigger valve and mild portwork? its kind confusing to read...
wish you'd spin it another 500rpm looks like gains are going up nicely as rpm increases.
wish you'd spin it another 500rpm
looks like gains are going up nicely as rpm increases.
Thread Starter
TECH Junkie
iTrader: (3)
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
The runs are all corrected to 77f, the actual temp stays within 10 degree's in the cell.
Kurt
Kurt
Originally Posted by calongo_SS
Just curoius, what was the temp for the previous runs?
Impressive gains for mild portwork.
Impressive gains for mild portwork.
