602 fwhp 383 ls6
602 fwhp 383 ls6 Found this for sale thread on Corvette Forum.
Originally built and freshened up by Joe’s Performance Racing Engines in Ft Myers, FL. “0” miles, no time on it since the freshened up. It's a 383 CID stroker crank, road racing, blueprinted, LS, long block assembly. This motor is really fast and ran a lap time of 2:18.4 in my 3000# Corvette on the Sebring International long course just before this recent rebuild. The last engine dyno run was 602 HP @ 6700 RPM w/ 532 # ft torque @ 3900 RPM at the flywheel. It comes with the original Superflow engine dyno sheet.
This LS long block motor includes the following parts:
Stock LS-6 heads with port work & bowel blending. 1.600” exhaust & 2.020 intakes
Crower roller cam with .570” intake lift & .559” exhaust lift and 232/241 degrees of duration @ 50
Forged Ross pistons with 11.5 to 1 compression ratio
This LS long block motor includes the following parts:
Stock LS-6 heads with port work & bowel blending. 1.600” exhaust & 2.020 intakes
Crower roller cam with .570” intake lift & .559” exhaust lift and 232/241 degrees of duration @ 50
Forged Ross pistons with 11.5 to 1 compression ratio
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Joined: Nov 2002
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From: Berkeley, California
All you did was post a link to another forum's for sale section. You then copied and pasted the advertisement. You made sure to bold a few points but you never elaborate as to why you bolded the points.
So again, I ask, what is the point of this thread? Are you asking if this is feasible? Are you asking if this would be a radical combo to achieve these kinds of numbers? Are you asking if 243 casting heads are capable of pushing a combo like this over the 500rwhp/600 crank hp mark?
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I'm not sure, that's why I asked. So you tell me?
All you did was post a link to another forum's for sale section. You then copied and pasted the advertisement. You made sure to bold a few points but you never elaborate as to why you bolded the points.
So again, I ask, what is the point of this thread? Are you asking if this is feasible? Are you asking if this would be a radical combo to achieve these kinds of numbers? Are you asking if 243 casting heads are capable of pushing a combo like this over the 500rwhp/600 crank hp mark?
All you did was post a link to another forum's for sale section. You then copied and pasted the advertisement. You made sure to bold a few points but you never elaborate as to why you bolded the points.
So again, I ask, what is the point of this thread? Are you asking if this is feasible? Are you asking if this would be a radical combo to achieve these kinds of numbers? Are you asking if 243 casting heads are capable of pushing a combo like this over the 500rwhp/600 crank hp mark?
But I have to say this has to be one of the strongest 383 with 243s and a small cam...
Well, I believe its a happy dyno. 408ci are lucky to push the 500rwhp mark with bigger cam and better heads.
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i'm pretty sure that because you made post with no valid question he has a point. just because you did something dumb doesnt mean you have to argue about why you're not retarded. we know you are, accept it and move on with whatever you wanted to say.
A 232/241 isn't a small cam by any means either. Bigger cams don't always equal more power. As far as the heads go, 243 castings are well sought after and damn good in the hands of someone who knows what they're doing. They can move some serious air.
408's aren't lucky to hit and go beyond 500rwhp. It's the people who skimp on their head and intake selection and throw in some giant mis-matched cam that struggle to make or break 500rwhp.
I dont think I have ever heard of this Joe's performance racing engines place. Also, with that combo, I am doubting the numbers, unless the guy forgot to add that he was on a 100 shot.
How often do we actually see FWHP #'s on this board ? Call up TSP, or HKE etc... and ask what kind of FWHP #'s they've seen before raising the BS flag. Something else to consider is, this engine on the dyno more than likely had the optimum exhaust, no accessories, temp controlled enviroment, e-water pump etc.....
Contrary to the belief of most people on the LS boards, the majority of the best engine builders don't spend much if any of their time building LS motors. There are arenas in motorsports with a much more lucrative business model for building engines than trying to compete with the cookie cutter builds most prefer in our LS world. Aside from some of the unique intake flow characteristics on the LS based heads its just a small block chevy so any competent race engine builder can easily learn the differences and make an LS setup make the power.
How often do we actually see FWHP #'s on this board ? Call up TSP, or HKE etc... and ask what kind of FWHP #'s they've seen before raising the BS flag. Something else to consider is, this engine on the dyno more than likely had the optimum exhaust, no accessories, temp controlled enviroment, e-water pump etc.....
How often do we actually see FWHP #'s on this board ? Call up TSP, or HKE etc... and ask what kind of FWHP #'s they've seen before raising the BS flag. Something else to consider is, this engine on the dyno more than likely had the optimum exhaust, no accessories, temp controlled enviroment, e-water pump etc.....
well that and you never know who he had do the heads. His neighbor might build motors for Top Fuel or some ****. It may be highly unlikely but it is not impossible. go into it with an open mind and ask a helluva lot of questions.
FYI- New ZR1 makes 638 at the flywheel and 507 at the pavement
I have an engine dyno in my shop and its very uncommon to see a (street car)drivetrain eat less than a hundred horsepower. Th400's are the worst, they can use any where from 125 to 225 horsepower in themselves, not including driveshaft, axle, etc.
Ever seen or heard of a 475 or 500 wheel HP vette with a 383?
FYI- New ZR1 makes 638 at the flywheel and 507 at the pavement
I have an engine dyno in my shop and its very uncommon to see a (street car)drivetrain eat less than a hundred horsepower. Th400's are the worst, they can use any where from 125 to 225 horsepower in themselves, not including driveshaft, axle, etc.
Ever seen or heard of a 475 or 500 wheel HP vette with a 383?
Last edited by CarsandWomen; May 2, 2009 at 01:32 AM.