313ci what kind of power should I make??? NX nitrous How Fast?? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 05-22-2013, 08:36 PM
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a lot of effort in the wrong engine

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  #17 (permalink)  
Old 05-22-2013, 09:47 PM
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To each there own and its tiring to always see the same engines. I'm one of those guys that really likes to be different. Look at all the people with T-Types and Grand Nationals with the turbo V-6's that make some serious power but for a Ton of money, same with imports. Mine is just a nitrous fed 313ci small block. Not really a ton of money like so many think. Really different and awesome! Look at all the 305 class now.
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Old 05-22-2013, 09:53 PM
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I have nothing against 307s. Its just that when you spend a lot of cash to get maybe fair results,why bother.I considered building a 420 HP 283,then decided its a waste of money.
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Old 05-22-2013, 10:04 PM
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I get that, I just see so many people with these crate engines then they through nitrous on them and make the same power I am for even more money. I have only paid for parts, I did all the work myself on my free time in the machine shop. I have only had to pay for parts, Less than a base performance crate engine cost. If you had to pay someone else for all of this then you are more than right, this would cost an arm and a leg for only 400hp or so naturally asperated.
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Old 05-22-2013, 10:12 PM
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If you have access to a machine shop,why not build a used part twin turbo ,ls truck engine,six liter???
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  #21 (permalink)  
Old 05-22-2013, 10:19 PM
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Now that's expensive. Parts cost triple or even more than what I have spent and then another five time that for the rest of the driveline to hold that kind of power. I didn't say I had $30k to spend.
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Old 05-22-2013, 10:40 PM
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My motto is 'Do what you can with what you have where you are.' I have it hanging up in the office part of my shop at work. I think you did pretty well with what you started with. I'm not a big proponent of small cube motors but this a solid build that shows the capabilities of one of the less-loved SBCs. Good on you for taking good advice when it's given as well.
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Old 05-23-2013, 07:52 AM
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Nice project

Are you using a 7.5" rear or an 8.5"?
I would definitely get rid of the 7.5, broke 3 of them myself not launching harder than 1.88-1.92 60'.
It would be interesting to see some timeslips if you ever get it to the track.
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Old 05-23-2013, 08:27 AM
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I always like to see 307 get some respect. Always getting put down like a black sheep of the family.
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  #25 (permalink)  
Old 05-23-2013, 08:08 PM
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re 30K?

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Originally Posted by FKR View Post
A little more update for everyone. I have the engine back out and did a little more port work to the heads (184cc intake/69cc exhaust) and intake now a 1206 gasket, while I wait on my new mechanical roller cam and the machining for the new springs and 54cc chambers for 10.8:1. Also looking into running a 750 carb with alcohol. Still looking into a better rear. Spending a lot of time learning as much as I can to make this engine work and the car to put the power to the ground for fast good consistent times. If a 305 can make 394hp n/a with stock rotating assembly (engine master challenge) Then there is no way my build can't be close or even better. I am really hoping to make over 550hp with nitrous. Some how 10.99 here I come!
You said my idea was silly? yes,you can get 550 your way
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Old 05-26-2013, 11:28 AM
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The rear is still a 7.5 that I built when I had my old 305 which ran 13.60's@90mph. I am getting a ford 9" to put in. Thinking of a using 4.71 gears with 28-10.50 slicks.
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  #27 (permalink)  
Old 05-26-2013, 11:39 AM
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13.60s at 90 MPH?
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  #28 (permalink)  
Old 05-27-2013, 08:36 AM
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Yes, no nitrous almost all stock engine and still had everything in it. Car weighed 3540 with me in it. I spun really bad every time. I know that's nothing to brag about but that's what I had at the time. Stock trans 200-4R and 4.56 rear gears. So what I have now is a 3000lbs car with a well built 313ci nitrous fed engine, TH350, 3700 stall and 4.10. I drove it with the flat tappet cam and it was quick on just the engine, never got to run it at the track. Now its going to have a bigger solid roller cam 555/576 238-245@.050 110lsa.
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  #29 (permalink)  
Old 05-27-2013, 10:36 AM
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Your mph looks awful low for the ET + tirespin....
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  #30 (permalink)  
Old 05-27-2013, 06:19 PM
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I agree

Quote:
Originally Posted by Rhansen View Post
Your mph looks awful low for the ET + tirespin....
Thats why i questioned it above?
same car with nitrous/307/4.1 gears
I would guess 13.1s if the last car went 13.6s
The MPH indicates very low horse power
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