750 hp on the street - Chevelle Tech
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post #1 of 52 (permalink) Old Jun 14th, 11, 9:13 PM Thread Starter
dave
 
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750 hp on the street

has to run on pump gas and have a hyd roller. what would your set up be? i'm new to this board and after alot of google bbc searches this forum kept showing up. i respect your guys knowledge here after reading lots of threads. i have a 69 nova that weighs 3600 with driver a tko 600 and 4:10s in the 12 bolt. stock rear suspension. i want a kick a** street car. i currently have a world products 509 merlin [ i think its the only crate motor they have built that has been trouble free] that is supposed to make 575 hp @5800 and 595 tq @3500.i don't want to go to a solid roller because the car is currently undergoing a custom resto. and oil running all over the motor and subframe while adjusting the valve lash isn't happening. i don't plan on racing the car since there is no dragstrip close.
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post #2 of 52 (permalink) Old Jun 14th, 11, 9:18 PM
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Re: 750 hp on the street

oil running all over the motor and subframe while adjusting the valve lash isn't happening?
You do know the lash is adjusted without the motor running and with shaft rockers you'll hardly ever have to adjust them.I do not get oil spray on my car.

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post #3 of 52 (permalink) Old Jun 14th, 11, 9:26 PM
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Re: 750 hp on the street

Mike Lewis forged 540/555 cu in 10:5:1
AFR 335
Chris Straub Soild roller and morel lifters
T and D shaft rockers
Victor jr intake
Pro systems hp 1000 carb

That should get you close for starters

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post #4 of 52 (permalink) Old Jun 14th, 11, 9:30 PM
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Re: 750 hp on the street

Quote:
Originally Posted by ryfrat View Post
Mike Lewis forged 540/555 cu in 10:5:1
AFR 335
Chris Straub Soild roller and morel lifters
T and D shaft rockers
Victor jr intake
Pro systems hp 1000 carb

That should get you close for starters
That should do it!

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post #5 of 52 (permalink) Old Jun 14th, 11, 9:45 PM
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Re: 750 hp on the street

I don't think you need 750 for a kick ass street car Dave. You won't be able to hook that anyway unless you want to do long smokey burouts, especially with a stick car...it would work for that...

750 would be a big stretch for a HR, not saying it couldn't done but a big stretch (and probably expensive). Any reason you chose that number? If you're at 575 now even going to 650/675 would be night and day and that's doable cost effectively....JMO...

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post #6 of 52 (permalink) Old Jun 14th, 11, 9:50 PM Thread Starter
dave
 
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Re: 750 hp on the street

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Originally Posted by crazydavey View Post
I don't think you need 750 for a kick ass street car Dave. You won't be able to hook that anyway unless you want to do long smokey burouts, especially with a stick car...it would work for that...

750 would be a big stretch for a HR, not saying it couldn't done but a big stretch (and probably expensive). Any reason you chose that number? If you're at 575 now even going to 650/675 would be night and day and that's doable cost effectively....JMO...
no 750 is kinda a benchmark i set i don't want to do this again so i figure @750 i won't. hey i like long smokey burnouts
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post #7 of 52 (permalink) Old Jun 14th, 11, 9:51 PM
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Re: 750 hp on the street

Save your money IMO. I actually don't think you would be able to tell the difference between 575 and 675 on the street. The tires are going to INSTANTLY light up with either combo and I doubt spinning the tires with 675 HP is any quicker than spinning them with 575. Maybe they stop breaking loose at 95 instead of 85 from a roll.

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post #8 of 52 (permalink) Old Jun 14th, 11, 9:53 PM Thread Starter
dave
 
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Re: 750 hp on the street

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Originally Posted by ryfrat View Post
oil running all over the motor and subframe while adjusting the valve lash isn't happening?
You do know the lash is adjusted without the motor running and with shaft rockers you'll hardly ever have to adjust them.I do not get oil spray on my car.
no i didn't know that anytime i've seen it done the car was always running.hey thanks for the tip on the shaft rockers didn't know they worked that well. maybe i could be talked into a s.r.
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post #9 of 52 (permalink) Old Jun 14th, 11, 10:11 PM
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Re: 750 hp on the street

469" motor was maybe 550hp, new 540" motor is 650-680 hp. You can tell the difference. A step up to 750 hp would entail a much more radical motor. But what's really noticeable with the new 540" is the midrange punch and overall throttle response. Right there all the time from idle To 6000.
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post #10 of 52 (permalink) Old Jun 14th, 11, 10:13 PM
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Re: 750 hp on the street

wether its a flat tappet solid or a roller..you can certainly set the lash cold.
I don't set the lash on anything while its running anymore....
I am sure a s/r would wake the 509 right up and take it to the next level
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post #11 of 52 (permalink) Old Jun 14th, 11, 10:31 PM
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Re: 750 hp on the street

Procharger....Making more HP than guys can put through street tires since they started making 'em. I dont see you getting there any easier unless you slap a plate on it and spray it to 750hp. Any other way is going to cost you some substantial money and make the car more rowdy to drive than most would like with a stick and 4.10s. Plus you can step away from the tall gears and put some 3.55's in there to make it a little more livable to drive on the highway. Just my thoughts.

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post #12 of 52 (permalink) Old Jun 14th, 11, 10:46 PM
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Re: 750 hp on the street

Basic 540/555 will do 750+ easily with a good Hyd roller and some CNC AFR 335's or Dart 335's or better. You can do it with a solid flat tappet also. Peak HP RPM will come in around 6300-6500 or so depending on cam. They really like the bigger intakes and carbs. That will get you over 800.

Solid roller is worth another 25-30 HP.

Mainly depends on RPM you want to be in.




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post #13 of 52 (permalink) Old Jun 14th, 11, 10:47 PM
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Re: 750 hp on the street

Turbo and shoot for more like 750 at the tires. 5-6psi should do it

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post #14 of 52 (permalink) Old Jun 14th, 11, 11:43 PM Thread Starter
dave
 
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Re: 750 hp on the street

Quote:
Originally Posted by Orr89rocz View Post
Turbo and shoot for more like 750 at the tires. 5-6psi should do it
i wish i could afford a turbo motor!
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post #15 of 52 (permalink) Old Jun 14th, 11, 11:50 PM Thread Starter
dave
 
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Re: 750 hp on the street

thnx for the replies ,750 at the tires would be awesome. what combos would you go with to get there [750 @ the flywheel]. afrs are in the cards so is a solid roller. how about a rotating assembly, cam , intake ,carb and anything i'm missing. seriously i don't care i want rubber in all 5 gears. when that happens then i'll try to hook it up
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