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416 made horrible numbers!! Whatís wrong?

 
Old 09-04-2018, 08:17 AM
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Originally Posted by Mavn View Post
my 416 is not OP 416. My 416 is my 416 .
you got owned!
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Old 09-04-2018, 10:23 AM
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Originally Posted by big hammer View Post


you got owned!
OPz 416 iz oWnD
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Old 09-04-2018, 10:40 AM
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Originally Posted by BigDaddy97 View Post
My 421 peaked at 5800 with the LS3 intake, and now peaks at 6900 after switching to the Lsxr mid runner.
I agree that a better intake extends the rpm range (you proved it), but how much power torque did you gain? That is the issue here... his torque is so low, a high flowing intake isnít gone get him back his torque (at least 100rwtq low). Pushrod length is a good one to look at.

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Old 09-04-2018, 10:55 AM
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Im still under the impression its not a 416ci short block lol
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Old 09-04-2018, 11:52 AM
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414 with l92 stock ls3 intake and a 90mmTB pretty hefty cam.....makes 511rwhp and 488rwtq. 60lb injectors through a t56.

id make sure your pushrods are the correct length. the pull was done in the proper gear, you didnt starve for fuel at the higher range, or you lost a cylinder.

that didnt happen to me during the tune, but it happened later and you would be surprised on a car with a hefty cam how un noticed that can go? I relocated my coils so number 7 ended up laying on its primary. If you have a wideband you will notice cause it will run rich due to the unburned fuel.

if its the engine you say it is your estimate on power is right on, your dyno results however.......suggest you got problems
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Old 09-04-2018, 12:46 PM
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Originally Posted by Mavn View Post
Im still under the impression its not a 416ci short block lol
Actually, I'm starting to see your point
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Old 09-04-2018, 01:06 PM
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That or it's down two cylinders.
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Old 09-04-2018, 01:32 PM
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Originally Posted by Darth_V8r View Post
Actually, I'm starting to see your point
YUP! it would make sense. It makes cam ls1 power and torque lol Plus it looks like he paid a shop to do the work. and the tuner is saying the power is normal.. js
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Old 09-04-2018, 05:05 PM
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Someone at the shop has a new 416 in their car.
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Old 09-04-2018, 05:55 PM
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Originally Posted by Mavn View Post
Im still under the impression its not a 416ci short block lol
Him's got a baby cam ls1.
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Old 09-04-2018, 06:20 PM
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Originally Posted by JakeFusion View Post
Someone at the shop has a new 416 in their car.

precisely .
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Old 09-04-2018, 10:40 PM
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That power curve looks nothing like a 416. Even if there was a restriction or valvetrain issue up top, it would still make torque ...which it clearly is not doing. I'm gonna have to agree with Mavn. Shop swapped a LS1 with a 224r cam in favor of your 416 Thompson mill.
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Old 09-04-2018, 11:10 PM
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All I know is that I wouldn't be using a 240*/256* cam on a stock compression engine....no matter how many cubic inches the engine had.

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Old 09-05-2018, 12:07 AM
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350 rwtq is like 4.8 stuff
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Old 09-05-2018, 12:27 AM
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Take detailed pics of the engine
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Old 09-05-2018, 06:27 AM
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Originally Posted by big hammer View Post
Take detailed pics of the engine
Get pics of the casting numbers on the block and heads in particular.
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Old 09-05-2018, 07:27 AM
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Originally Posted by kinglt-1 View Post
That power curve looks nothing like a 416. Even if there was a restriction or valvetrain issue up top, it would still make torque ...which it clearly is not doing. I'm gonna have to agree with Mavn. Shop swapped a LS1 with a 224r cam in favor of your 416 Thompson mill.
As soon as I saw the curve and read the post. I was like yep.. its a 224 cammed ls1 or gen 4 aluminum 5.3 lol
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Old 09-05-2018, 10:45 AM
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You are way down on power which i believe is pretty obvious at this time. The short block and cam you have with our CNC heads makes 609fwhp on our dyno with a stock intake. Give us a shout as you start to get more info. We would like to be in the loop on what you find and please let us know if we can help you sort it all out. Thank you!!
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Old 09-05-2018, 11:55 AM
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Originally Posted by Mavn View Post
As soon as I saw the curve and read the post. I was like yep.. its a 224 cammed ls1 or gen 4 aluminum 5.3 lol
thsts even low tq for an ls1. Iím going with aluminum 53
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Old 09-05-2018, 01:33 PM
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Originally Posted by big hammer View Post


thsts even low tq for an ls1. Iím going with aluminum 53
alum 5.3 it is. Where's the OP?! Let's see pics under the hood!
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