L92 DynoJet Numbers Plus Plan B, C, D, E and F...
03-05-2007, 03:54 PM
#181
Originally Posted by SideStep
I just road in this car...
Of all the rides I have been in this is absolutely the most mechanically quiet. I simply don't understand it, 13 degrees overlap and the steering wheel was not shaking at all at idle. You hear the car from the exhaust, not from under the hood...
Throttle response was brutal and rolling through 3rd gear flat puts your *** in the seat.
I was one of the original skeptics from earlier posts and I am not afraid to admit I am now eating crow about this.
Absolutely the most civilized 500rwhp I have ever experienced... Props to all those involved
Of all the rides I have been in this is absolutely the most mechanically quiet. I simply don't understand it, 13 degrees overlap and the steering wheel was not shaking at all at idle. You hear the car from the exhaust, not from under the hood...
Throttle response was brutal and rolling through 3rd gear flat puts your *** in the seat.
I was one of the original skeptics from earlier posts and I am not afraid to admit I am now eating crow about this.
Absolutely the most civilized 500rwhp I have ever experienced... Props to all those involved
We will be trying for the same type results on another 403. This time with cathedral ports. Customer request is the same; make it civil......
So Sidestep, Like the tune?
03-05-2007, 04:24 PM
#182
Originally Posted by SideStep
I just road in this car...
Of all the rides I have been in this is absolutely the most mechanically quiet. I simply don't understand it, 13 degrees overlap and the steering wheel was not shaking at all at idle. You hear the car from the exhaust, not from under the hood...
Throttle response was brutal and rolling through 3rd gear flat puts your *** in the seat.
I was one of the original skeptics from earlier posts and I am not afraid to admit I am now eating crow about this.
Absolutely the most civilized 500rwhp I have ever experienced... Props to all those involved
Of all the rides I have been in this is absolutely the most mechanically quiet. I simply don't understand it, 13 degrees overlap and the steering wheel was not shaking at all at idle. You hear the car from the exhaust, not from under the hood...
Throttle response was brutal and rolling through 3rd gear flat puts your *** in the seat.
I was one of the original skeptics from earlier posts and I am not afraid to admit I am now eating crow about this.
Absolutely the most civilized 500rwhp I have ever experienced... Props to all those involved
A wolf in sheep's clothing. 
Now. where did those C6 Z06's go....
Last edited by WKMCD; 03-05-2007 at 04:30 PM.
03-05-2007, 05:26 PM
#183
Originally Posted by edcmat-l1
It is pretty incredible, isnt it? And for all those out there (L92 naysayers), I wonder how many other 500 RWHP cars are that civil.
We will be trying for the same type results on another 403. This time with cathedral ports. Customer request is the same; make it civil......
So Sidestep, Like the tune?
We will be trying for the same type results on another 403. This time with cathedral ports. Customer request is the same; make it civil......
So Sidestep, Like the tune?
What was the final DCR???
03-05-2007, 05:30 PM
#184
Originally Posted by SideStep
Tune had to be dead-nutz on!!! No gas smell, no bucking, no surging, and cruised around at 1500rpm cruising in 6th gear...
What was the final DCR???
What was the final DCR???
03-05-2007, 07:10 PM
#185
Originally Posted by WKMCD
Thanks Scott. You really have to see it to believe it don't you. Now you know why I call it a "Gentleman's Cruiser" albeit a very fast one. A wolf in sheep's clothing.
Now. where did those C6 Z06's go....
A wolf in sheep's clothing. Now. where did those C6 Z06's go....
03-05-2007, 08:20 PM
#190
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Originally Posted by C_Williams
L92 Heads on a 417
232-234 114+2
Stock L76 (not ported)
232-234 114+2
Stock L76 (not ported)
03-05-2007, 08:22 PM
#191
Originally Posted by C_Williams
L92 Heads on a 417
232-234 114+2
Stock L76 (not ported)
232-234 114+2
Stock L76 (not ported)
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
03-05-2007, 08:42 PM
#192
Originally Posted by WKMCD
Nice work Charlie. Right in there with my numbers on a 417CI.
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
I'd say drive-a-bilty, that cam only has 5 degrees overlap... SMOOTH.....
VERY interested in build info... 2 degree split is interesting..
03-05-2007, 10:19 PM
#193
Originally Posted by WKMCD
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Nice numbers, good driveability, I'm sure.....
I bet that thing idles like stock.
03-06-2007, 12:54 AM
#194
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Originally Posted by WKMCD
Nice work Charlie. Right in there with my numbers on a 417CI.
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
I got the memo on small ports are a must & large ports suck, but wiped my *** with it and sent it back!
Charlie
03-06-2007, 12:59 AM
#195
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Originally Posted by SideStep
I'd say drive-a-bilty, that cam only has 5 degrees overlap... SMOOTH.....
VERY interested in build info... 2 degree split is interesting..
VERY interested in build info... 2 degree split is interesting..
Here's some pics of the heads and some flow numbers...
03-06-2007, 08:12 AM
#198
Originally Posted by WKMCD
Nice work Charlie. Right in there with my numbers on a 417CI.
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
I guess we didn't get the memo "these heads don't work". I'm sure yours will have the same drivability that mine does.
Congrats!!!!
People also think the problem with the heads is in the intake, it is in the heads, that is what I said.
Some day someone might figure out a cam that makes 550 RWHP and 500 RWTQ on a 408 like some other heads do...but for now they haven't, and it will take a set of heads that flow as good as Charlies or better to do it.
Maybe I should send you guys my "coeffecient of discharge" spread sheet that I created in 1993, then you may better understand velocity around the valve....
Last edited by Brian Tooley Racing; 03-10-2007 at 09:31 PM.
03-06-2007, 08:16 AM
#199
Originally Posted by Brian Tooley
Wow, 52X HP and 48X torque from maxed out L92's on a 417...I guess I should just close the doors 
I didn't say the heads "don't" work, what I said was the intake valve is TOO LARGE and they are VERY HARD to cam.
People also think the problem with the heads is in the intake, it is in the heads, that is what I said.
Some day someone MIGHT figure out a cam that makes 550 RWHP on a 408 like the TFS heads do...but for now they haven't, and it will take a set of heads that flows as good as Charlies or better to do it.
Maybe I should send you guys my "coeffecient of discharge" spread sheet that I created in 1993, then you may better understand....
I didn't say the heads "don't" work, what I said was the intake valve is TOO LARGE and they are VERY HARD to cam.
People also think the problem with the heads is in the intake, it is in the heads, that is what I said.
Some day someone MIGHT figure out a cam that makes 550 RWHP on a 408 like the TFS heads do...but for now they haven't, and it will take a set of heads that flows as good as Charlies or better to do it.
Maybe I should send you guys my "coeffecient of discharge" spread sheet that I created in 1993, then you may better understand....
BTW: It's not always about you.
Last edited by WKMCD; 03-06-2007 at 08:25 AM.
03-06-2007, 08:21 AM
#200
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Originally Posted by Brian Tooley
Wow, 52X HP and 48X torque from maxed out L92's on a 417...I guess I should just close the doors
I didn't say the heads "don't" work, what I said was the intake valve is TOO LARGE and they are VERY HARD to cam.
People also think the problem with the heads is in the intake, it is in the heads, that is what I said.
The heads are lighter than a LS1 head...and don't hold head gaskets on the spray as well as a LS1 head does....
Some day someone MIGHT figure out a cam that makes 550 RWHP and 500 RWTQ on a 408 like the TFS heads do...but for now they haven't, and it will take a set of heads that flow as good as Charlies or better to do it.
Maybe I should send you guys my "coeffecient of discharge" spread sheet that I created in 1993, then you may better understand velocity around the valve....
I didn't say the heads "don't" work, what I said was the intake valve is TOO LARGE and they are VERY HARD to cam.
People also think the problem with the heads is in the intake, it is in the heads, that is what I said.
The heads are lighter than a LS1 head...and don't hold head gaskets on the spray as well as a LS1 head does....
Some day someone MIGHT figure out a cam that makes 550 RWHP and 500 RWTQ on a 408 like the TFS heads do...but for now they haven't, and it will take a set of heads that flow as good as Charlies or better to do it.
Maybe I should send you guys my "coeffecient of discharge" spread sheet that I created in 1993, then you may better understand velocity around the valve....
This behavior seems sooooooo familiar.