Finally after a lot of headaches, I was able to dyno my 563 today. Very happy with the results, and I have to thank Thumper, for building one heck of a carb, and nailing the setup from the start.
Here is a run down of the combo: INDY RB aluminum block Molnar 4.375” crank Molnar 7.100 rods Diamond 4.524 bore pistons 13.4:1 compression INDY 440-1 345CNC heads, prepped by Dwayne Porter INDY 440-3X intake Erson roller cam 288/302 duration 2.125-2.250 headers w/4” collector Jesel belt drive Milodon oiling system MSD distributor w/ crank trigger
We made 9 pulls total. Mainly wanted to get the timing right, and carb setup right. Didn’t test any magical part of the month stuff.
Nice job and congrats, Jeff! Man, I know it feels good to shake all the adversity thrown your way throughout the process, but it all worked out. Plenty of power and grunt for sure! It has some more in it! Can't wait to hear the track videos when the hammer drops and gears are being rowed.
The engine is going into my ‘68 Road Runner. Car is a back half 4 link. With this engine and trans combo, it should weigh right around 3050lbs, with me in the car. Car is equipped with a Liberty Clutchless 4 speed, and Soft Lok clutch worked over by Black Magic.
Good numbers for passenger car headers with all the tight bends. A carb spacer would probably add another 10 or 15 hp if you have room under the hood.
Most likely would have made more power, but didn’t see any reason to try anything that wouldn’t fit in the car. Dyno operator asked, and I just told him I wanted to optimize what I had, and wasn’t looking for a hero dyno sheet. I’m more that happy with the results, and at the end of the day, I just want to go racing again, and hang out with my friends. I’ll adjust the shoe polish on the window accordingly.
Good numbers for passenger car headers with all the tight bends. A carb spacer would probably add another 10 or 15 hp if you have room under the hood.
Most likely would have made more power, but didn’t see any reason to try anything that wouldn’t fit in the car. Dyno operator asked, and I just told him I wanted to optimize what I had, and wasn’t looking for a hero dyno sheet. I’m more that happy with the results, and at the end of the day, I just want to go racing again, and hang out with my friends. I’ll adjust the shoe polish on the window accordingly.
Looks like you have room for a carb spacer. A Wilson four to one combo spacer will add power on the 3X. Could be 10 to 15 on that engine.
Nice to see the results after all the delays. Very good post with combo summary and dyno results all in one place.
733.0 ft-lbs at 5700 rpm 869.8 hp at 7000 rpm
I bet it would hold close to that HP at higher RPM.
I was asked how high I was willing to spin it, and told him I didn’t want to go over 7000, and would most likely be shifting it at 6800. It’s a bracket engine. I want it to last a long time.
Congrats on the successful dyno runs. That should put you in the 9 teens or oh's. You say you just want it to get down the track, hang out with your friends at the dragstrip. I know better. You want an 8 second time slip! What is it going to take, 8.86?
[img]http://i.imgur.com/boeexFms.jpg[/img] 31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
Congrats on the successful dyno runs. That should put you in the 9 teens or oh's. You say you just want it to get down the track, hang out with your friends at the dragstrip. I know better. You want an 8 second time slip! What is it going to take, 8.86?
Wallace calculator shows it “should run 8.85 @ 152 mph. But we all know that is with optimum conditions, and sea level. We don’t race at either of those. While yes, I’d love to see a 8.9999 before the 4th of July, and collect yet another dinner from you, I’ll be content with a 9.teen, and have it repeat all day.
Congrats on the successful dyno runs. That should put you in the 9 teens or oh's. You say you just want it to get down the track, hang out with your friends at the dragstrip. I know better. You want an 8 second time slip! What is it going to take, 8.86?
........just ask Doug about that 8 Love the way the car sits
Congrats on the successful dyno runs. That should put you in the 9 teens or oh's. You say you just want it to get down the track, hang out with your friends at the dragstrip. I know better. You want an 8 second time slip! What is it going to take, 8.86?
Wallace calculator shows it “should run 8.85 @ 152 mph. But we all know that is with optimum conditions, and sea level. We don’t race at either of those. While yes, I’d love to see a 8.9999 before the 4th of July, and collect yet another dinner from you, I’ll be content with a 9.teen, and have it repeat all day.
If you want to run in the 8's ....its practically a no brainer. SLip the "correct" carb spacer in there and im sure it will go DEEP into the 8's
Seriously.....congrats, that a bad A$$ bracket engine
Sounds like a runner, dont see why you cannot get her into the 8's with that piece. As for carb spacers, ehh. I have dynoed alot of engines and seems you can stack them to the ceiling and make more power and put it in the car and see ZERO gains. Its all about plenum volume for the given combo, if its good its good. FWIW we have had the best luck with the ones we have made for our stuff to match the carb size more than a generic spacer. I believe that is do more to fuel shear atomization and droplet size than anything else.
"I am not ashamed to confess I am ignorant of what I do not know."
Sounds like a runner, dont see why you cannot get her into the 8's with that piece. As for carb spacers, ehh. I have dynoed alot of engines and seems you can stack them to the ceiling and make more power and put it in the car and see ZERO gains. Its all about plenum volume for the given combo, if its good its good. FWIW we have had the best luck with the ones we have made for our stuff to match the carb size more than a generic spacer. I believe that is do more to fuel shear atomization and droplet size than anything else.
Al , these carb spacers work wonders , and only one needed 😂
Sounds like a runner, dont see why you cannot get her into the 8's with that piece. As for carb spacers, ehh. I have dynoed alot of engines and seems you can stack them to the ceiling and make more power and put it in the car and see ZERO gains. Its all about plenum volume for the given combo, if its good its good. FWIW we have had the best luck with the ones we have made for our stuff to match the carb size more than a generic spacer. I believe that is do more to fuel shear atomization and droplet size than anything else.
Al , these carb spacers work wonders , and only one needed 😂
I have one of those with the lettering blacked out. It has a hot side and a cold side....
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
Did you try making any pulls with the air sensor disconnected and remove with the carb open to the room air only? If so what was the differences? If not
Last edited by Cab_Burge; 10/28/2205:09 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
You're getten'r done! How am I supposed to win any bets?
[img]http://i.imgur.com/boeexFms.jpg[/img] 31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
Thanks Tony. I got the joke. No way I'm touching that stuff. I have a hard enough time not wrecking anything. Don't need to add melted pistons to the mix.
Thanks Tony. I got the joke. No way I'm touching that stuff. I have a hard enough time not wrecking anything. Don't need to add melted pistons to the mix.
??? COME ON NOW.....ITS VERY VERY SAFE.....I JUST removed my 530" and its got 75 passes, all from a 136 jet up to a 150 jet. Every hole still pumps more cranking comp then when it was fresh. Your engine would barely notice a 73 or 82 jet, and im sure it would be solid into the 8's
Thanks Tony. I got the joke. No way I'm touching that stuff. I have a hard enough time not wrecking anything. Don't need to add melted pistons to the mix.
Come on Jeff! Make that LIBERTY work! Here's a Liberty rowing 15 YEARS ago!
??? COME ON NOW.....ITS VERY VERY SAFE.....I JUST removed my 530"
I don’t think most people understand just how shoestring budget of a racer I am? I’m lucky if I can race a couple times a year. Just a bracket racer that wants to have fun.
??? COME ON NOW.....ITS VERY VERY SAFE.....I JUST removed my 530"
I don’t think most people understand just how shoestring budget of a racer I am? I’m lucky if I can race a couple times a year. Just a bracket racer that wants to have fun.
If you built a 12 sec car you could go 4 or 5 times a year
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
Jeff , is that upper hose 12an?? and what brand hose and fitting is it?? THanks
Yes, the radiator hoses are -12AN. I cut off the stock inlet/outlet on the radiator, and welded on bungs. The radiator looks somewhat stock, but is aluminum.
+ 
........just ask Doug about that 8 
in there and im sure it will go DEEP into the 8's 
