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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Anyone build a 615 or 598 using the DART 20 Degree headsGo | New | Find | Notify | Tools | Reply | |
| Anyone build a 615 or 598 using the DART 20 Degree heads | Login/Join |
| DRR Sportsman |
Well we have not seen ANYWHERE near that kind of power but I have not even bothered trying anything else in a log time. I run Q in everything we have, the dragster and my car. Don't care what it makes on C14+ or C25. as I am not using those fuels. I'm poor and still do most my own carb work. On the heads up deal it is a Braswell 7395 and when it was on Q was built for that and been an ever changing evolution on the track with C45. Cant tell you how many times we have changed boosters in that deal. C45 makes power for sure but has a very tight tuning window, where as with the Q it is pretty damn big. But this is only a 400 cube deal making north of 1050, not a 632 making 1300+..Used to say you could probably just hook up a garden hose with Q into the carb and let it rip  "I am not ashamed to confess I am ignorant of what I do not know." Marcus Tullius Cicero | |||
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| DRR Sportsman |
"I am not ashamed to confess I am ignorant of what I do not know." Marcus Tullius Cicero | |||
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| DRR S/Pro |
Calling u California Screaming! Raceless in California! | |||
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| DRR Trophy |
When I first started running Texas Pro Stock I was dynoing my 565 and it was making in the 1130-1150 range. I decided to dyno the different fuels to just see what the actual difference was as there is a lot of hype and misinformation out there. My baseline was C-15. C-25 picked the engine up 16 hp over the C-15. Q-16 picked it up 11 hp over the C-25. C-44 picked it up 2 hp over the Q-16. That is what I found. Abbott Racing Heads (432) 558-2841 | |||
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| DRR S/Pro |
What you see for increases in power based on fuels can depend on how good your base setup is to start with along with each one after. Most that run reg race gas and switch to Q16 see about 30 HP on your typical BBC. BTW I think you meant C45 vs C44? | |||
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| DRR Trophy |
No. C-44 is what most people in TPS ran when we started. There was no C-45 at that time. Q-16 was the new fuel on the block. C-44 was what they used to call rocket fuel. C-44 at the time was $40 a gallon. C-25 was $20 a gallon. I do not think they even make C-44 anymore. The main ingredient in it was used in the cosmetic industry and had gotten too expensive and hard to get. Abbott Racing Heads (432) 558-2841 | |||
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| DRR Sportsman |
As for the original question, decided to go with the CNC Dart 20 heads with titanium intake and exhaust valves. 1248 spring, 2.100 installed height. Planning on 850 to 900 ish lift. Short block is 615, callies magnum, callies I beam ultras, wiseco Q-16 piston. Compression looks like it will fall out around 15.2 to 15.5 depending on how low i leave the piston in the hole. Should come in at 0.017" down, may cut 0.01" off deck to get the piston out of the bore some, but worried about the compression getting out of hand. Will need to check all this once we get the short block mocked up. I know this is contrary to most who have commented here (no offense) but it will have a tunnel ram on it with an enderle bird catcher and MFI on methanol. All the big parts are on order but seems like things take a long time to deliver these days. 3 weeks on the crank, 3-4 on the block, 2-3 on the heads???? Anyone else getting this? | |||
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Bracket Talk Bracket Talk Forum Tech Talk - by Abruzzi Anyone build a 615 or 598 using the DART 20 Degree heads
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