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  Topic Review (Newest First)
April 12th, 2011 06:03 PM
03_StangGuy
Quote:
Originally Posted by na svt View Post
An n/a gain of 20rwhp is a 40rwhp gain at 14.7psi boost.
Your not comparing apples to apples anymore though. With NA the added stroke increases negative pressure in the cylinder as well as increasing the veloctiy of the incoming air. When your boosting the physics of the air wanting to equalize pressure will be greater than the velocity and out weigh the slight negative pressure increase.
April 12th, 2011 06:00 PM
Spurred Snake mjf, Reps to you sir for being so knowledgeable... Notice he hasn't returned =P. Sad, he seemed to know his shit. I'd say don't listen to a word he says. Just for shits and giggles, you should PM a mod...
April 12th, 2011 05:52 PM
na svt
Quote:
Originally Posted by 03_StangGuy View Post
Like a said the boost will force air into the engine making the 20ci gain less noticable since the blower crams in a fairly fixed amount of air. Ive never seen any dynos myself of engine making more power.

Also for the grand or so extra for a stoker is 20 hp really worth it? If your goin all racing maybe, but for most they can get alot more power for the money.
An n/a gain of 20rwhp is a 40rwhp gain at 14.7psi boost.
April 12th, 2011 05:43 PM
03_StangGuy
Quote:
Originally Posted by mfj View Post
Here is how fake this guy is... The dyno graph that he posted belongs to THIS GUY: 1000+hp 10sec truck - LS1TECH
Quote:
Originally Posted by na svt View Post
You're the first person I've heard say there was no power to be had in stroking a 4.6...seriously.

A stroker will make a minumum of 20rwhp/20ftlbs more than a stock ci engine with the same compression and cams. Because of the added cubes, the stroker will make peak power at a lower RPM than the 281 ci engine if it has the same cams as the smaller cube combo. Add cams that allow the stroker to take advantage of the extra cubes and the hp will peak at a higher RPM and the peak hp gain will be much greater.

I've never seen a 4v or 2v stroker not gain a significant amount of hp/tq.
You obviously aren't dealing with engines that were put together or spec'd correctly.
I replaced my shortblock and actually had a slightly higher CR and made the same. You do realize its a gain of only 21ci? So your saying the 4.6 makes 1whp per cubic inch? That would mean they would put down about 280 hp to the wheels stock.

Like a said the boost will force air into the engine making the 20ci gain less noticable since the blower crams in a fairly fixed amount of air. Ive never seen any dynos myself of engine making more power.

Also for the grand or so extra for a stoker is 20 hp really worth it? If your goin all racing maybe, but for most they can get alot more power for the money.
April 12th, 2011 03:53 PM
mfj ^Troof
April 12th, 2011 03:31 PM
na svt
Quote:
Originally Posted by 03_StangGuy View Post
What myths? I cant say for certain bout the excess wear but I have a stoker and the dyno is nearly identical to the stock block so there is no power to be had. The boost may be negating the minimal increase in volume but being so small I doubt the gains will be noticeable. If there were gains to be had you would hear bout it like stroking the old 302s to 347.
You're the first person I've heard say there was no power to be had in stroking a 4.6...seriously.

A stroker will make a minumum of 20rwhp/20ftlbs more than a stock ci engine with the same compression and cams. Because of the added cubes, the stroker will make peak power at a lower RPM than the 281 ci engine if it has the same cams as the smaller cube combo. Add cams that allow the stroker to take advantage of the extra cubes and the hp will peak at a higher RPM and the peak hp gain will be much greater.

I've never seen a 4v or 2v stroker not gain a significant amount of hp/tq.
You obviously aren't dealing with engines that were put together or spec'd correctly.
April 12th, 2011 03:21 PM
03_StangGuy
Quote:
Originally Posted by na svt View Post
That's what everyone thought back in the 90s. However, those myths have been debunked many times.
What myths? I cant say for certain bout the excess wear but I have a stoker and the dyno is nearly identical to the stock block so there is no power to be had. The boost may be negating the minimal increase in volume but being so small I doubt the gains will be noticeable. If there were gains to be had you would hear bout it like stroking the old 302s to 347.
April 12th, 2011 12:41 PM
na svt
Quote:
Originally Posted by mfj View Post
Another one lol...
Are we allowed to ban liars?
Ouch!
April 12th, 2011 12:33 PM
na svt
Quote:
Originally Posted by 03_StangGuy View Post
Dont worry bout a stroker. The 4.6 doesnt lend itself to gains from strokers. Also the piston is pulled out of the cylinder more than normal and can cause more wear.
That's what everyone thought back in the 90s. However, those myths have been debunked many times.
April 12th, 2011 12:19 AM
mfj I have a sixth sense that can see bullshit right away lol
April 11th, 2011 11:35 PM
Trentimus
Quote:
Originally Posted by mfj View Post
Another one lol

back to the dyno... again - PerformanceTrucks.net Forums

Are we allowed to ban liars?
I have to say + reps for calling that out. + you have a Cobra so I was already bias to your opinion.
April 11th, 2011 11:31 PM
mfj Another one lol

back to the dyno... again - PerformanceTrucks.net Forums

Are we allowed to ban liars?
April 11th, 2011 10:35 PM
mfj Here is how fake this guy is... The dyno graph that he posted belongs to THIS GUY: 1000+hp 10sec truck - LS1TECH
April 11th, 2011 10:33 PM
mfj
Quote:
Originally Posted by slow02gt View Post
really mfj who cars lol.......

and 99ls1 try looking at a glenn fuel system instead...or go with a fore triple pump intank setup...its cheaper than that shit and doesnt look as cheap and chessy lol...
Someone had to call him out on it. You can't go posting dyno sheets that are not yours, and claim them as your own....
April 11th, 2011 10:22 PM
slow02gt really mfj who cars lol.......

and 99ls1 try looking at a glenn fuel system instead...or go with a fore triple pump intank setup...its cheaper than that shit and doesnt look as cheap and chessy lol...
April 11th, 2011 08:10 PM
mfj
Quote:
Originally Posted by 99Ls1fever View Post
Dude I have had this car for like 8 years. My life goal is not memorise my dyno numbers the last time some one asked about this car was ? i dont even know. I was just throwing in the numbers that I have and I really dont give a rat a** if you dont believe me look through my old f quick link. I havent updated that thing in years and who knows what it was dynoing at that time.

You can ask around in Northern Colorado or the screen names I gave you. This car is straight business.
Upset much? lol So how are you going to explain that boost curve that is obviously wastegated (turbo)? Or the lack of a nitrous hit? lol... I'll explain it to you. It ain't your dyno graph.
April 11th, 2011 06:34 PM
99Ls1fever
Quote:
Originally Posted by mfj View Post
Not hating at all. More like LOVING! I wasn't asking it for proof. I just wanted to see a monster curve lol...

Just as a side note, that does NOT look like a nitrous + supercharger dyno... And that boost curve looks like a turbo boost curve. I am starting to get slightly suspicious. I also noticed you just changed the numbers in your signature...
Quote:
Originally Posted by 03_StangGuy View Post
Dont worry bout a stroker. The 4.6 doesnt lend itself to gains from strokers. Also the piston is pulled out of the cylinder more than normal and can cause more wear.
Thats What I have heard, if the stock crank is forged steel then I am just going to get rods and pistons and it go from there. Boost will fix the rest.
April 11th, 2011 06:32 PM
99Ls1fever Dude I have had this car for like 8 years. My life goal is not memorise my dyno numbers the last time some one asked about this car was ? i dont even know. I was just throwing in the numbers that I have and I really dont give a rat a** if you dont believe me look through my old f quick link. I havent updated that thing in years and who knows what it was dynoing at that time.

You can ask around in Northern Colorado or the screen names I gave you. This car is straight business.
April 11th, 2011 05:17 PM
mfj Just this morning your signature said that you only made 800 something torque and now it's up in the 1000's... Also, boost on a centri supercharger doesn't level of like that. It is a positive slope that keeps going up with RPM
April 11th, 2011 05:13 PM
03_StangGuy Dont worry bout a stroker. The 4.6 doesnt lend itself to gains from strokers. Also the piston is pulled out of the cylinder more than normal and can cause more wear.
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