Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

388 finally hits the dyno

Thread Tools
 
Search this Thread
 
Old 07-18-2017, 07:25 AM
  #101  
TECH Apprentice
 
CamOnlyJabroni's Avatar
 
Join Date: Sep 2014
Location: Fort Wayne, IN
Posts: 321
Received 88 Likes on 62 Posts
Default

Put a anti-roll bar on it!!! Don't leave home without it!
Old 07-18-2017, 08:54 AM
  #102  
7 Second Club
 
islander033's Avatar
 
Join Date: Jul 2013
Location: Crossfield, AB
Posts: 239
Received 313 Likes on 242 Posts

Default

Good job Hammer!

Looks like it's the Tio Crew now.

Sorry Mio.
Old 07-18-2017, 09:14 AM
  #103  
TECH Senior Member
iTrader: (27)
 
Rise of the Phoenix's Avatar
 
Join Date: Dec 2009
Location: Jefferson City, MO
Posts: 9,728
Likes: 0
Received 10 Likes on 9 Posts

Default

Have you put any thought into doing a custom made 4" intake w/ velocity stack?

https://ls1tech.com/forums/generatio...ke-system.html
Old 07-18-2017, 11:46 AM
  #104  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,935
Received 425 Likes on 336 Posts

Default

Why would he use a 4" tube od when the id of his tb is larger than that? Then drag it through 2-3ft of tubing. Nothing about that sounds efficient. Now it might be better than a lid set up but that's really not saying much.

I have a solution for him
Old 07-18-2017, 11:48 AM
  #105  
TECH Senior Member
iTrader: (27)
 
Rise of the Phoenix's Avatar
 
Join Date: Dec 2009
Location: Jefferson City, MO
Posts: 9,728
Likes: 0
Received 10 Likes on 9 Posts

Default

5" or 6" could be done as well.
Old 07-22-2017, 12:39 PM
  #106  
Banned
iTrader: (3)
 
adamantium's Avatar
 
Join Date: Sep 2011
Location: From the abyss
Posts: 942
Likes: 0
Received 3 Likes on 3 Posts
Default

Hammer went hollywood!
Old 07-22-2017, 07:04 PM
  #107  
10 Second Club
Thread Starter
 
big hammer's Avatar
 
Join Date: May 2009
Location: over dere
Posts: 3,428
Received 153 Likes on 105 Posts

Default









Old 07-22-2017, 07:04 PM
  #108  
10 Second Club
Thread Starter
 
big hammer's Avatar
 
Join Date: May 2009
Location: over dere
Posts: 3,428
Received 153 Likes on 105 Posts

Default

I needed to wash the car and take pics of it..
Old 07-23-2017, 12:44 AM
  #109  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,935
Received 425 Likes on 336 Posts

Default

Originally Posted by Rise of the Phoenix
5" or 6" could be done as well.
That awful big and woukd be hard to get over the core support. Something like this is more like it



Old 07-23-2017, 08:38 AM
  #110  
TECH Fanatic
iTrader: (4)
 
Bill00Formula's Avatar
 
Join Date: Nov 2001
Location: West Palm Beach, Fl
Posts: 1,066
Likes: 0
Received 11 Likes on 9 Posts

Default

I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Old 07-23-2017, 09:03 AM
  #111  
10 Second Club
Thread Starter
 
big hammer's Avatar
 
Join Date: May 2009
Location: over dere
Posts: 3,428
Received 153 Likes on 105 Posts

Default

I just got lucky
Old 07-23-2017, 09:18 AM
  #112  
TECH Fanatic
iTrader: (5)
 
64post's Avatar
 
Join Date: Nov 2011
Location: Sonoma Co. Ca.
Posts: 1,689
Received 226 Likes on 179 Posts

Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Because, he has a 3/4 cam and pop up pistons and you don't.
Old 07-23-2017, 09:41 AM
  #113  
Moderator
iTrader: (4)
 
Darth_V8r's Avatar
 
Join Date: Jul 2014
Location: My own internal universe
Posts: 10,446
Received 1,838 Likes on 1,146 Posts
Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Running LS7 clutch? What exhaust?
Old 07-23-2017, 09:41 AM
  #114  
TECH Resident
iTrader: (21)
 
sillysspeed's Avatar
 
Join Date: Sep 2009
Location: MD
Posts: 766
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Sounds like you need to work on dialing in your car some more. No reason with taking out some weight out and some fall/winter air down there you can't run 135+ mph. Might need to take a fine tooth comb over your whole setup. Could be a couple things holding you back
Old 07-23-2017, 10:00 AM
  #115  
10 Second Club
Thread Starter
 
big hammer's Avatar
 
Join Date: May 2009
Location: over dere
Posts: 3,428
Received 153 Likes on 105 Posts

Default

235's are good heads, but I just wouldn't use them on a 427. Doesn't necessarily make me right I suppose just a personal preference.

Some of these higher flowing cathedrals are darn good heads in their own right BUT I think fast intakes really limit them... a ported. Fast 102 flows maybe 290 cfm so it may limit a guy to the 530-540 rwhp range. Which is still decent but not what the heads are capable of. Just throwing some theories out there

Also the runner harmonics of a cathedral fast just aren't right for making really good hp over 6500 rpm. Seems like if you can get your TQ curve to stay pretty flat up top while continuing to climb in RPM that's when hp really starts to build
Old 07-23-2017, 10:06 AM
  #116  
TECH Fanatic
iTrader: (55)
 
Mike Morris's Avatar
 
Join Date: Mar 2010
Location: Md/PA/FL
Posts: 1,604
Received 61 Likes on 50 Posts

Default

MSS ported intake for the win!! I wish I could run one
Old 07-23-2017, 10:43 AM
  #117  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,935
Received 425 Likes on 336 Posts

Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Because you and the others you speak of have some of the worlds worst combos.....that's how. There is no need to rethink the wheel here with ls stuff. Hammer added to the wheels of motion by freeing up the engine and addressing downfalls others had in there combos. Extending the rpm range is a big part of that. Most simply think their combo is gonna work.......because well it's theirs. Not the way it works.
Old 07-23-2017, 10:53 AM
  #118  
Old School Heavy
iTrader: (16)
 
speedtigger's Avatar
 
Join Date: May 2010
Location: Florida
Posts: 8,830
Received 62 Likes on 36 Posts

Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Put a mid-length runner FAST on your car with some MAST heads and a LLR hi-lift camshaft like Hammer has and see what happens.

As for those 60' times, I would have to assume you are either spinning, have the wrong rear gear, or something goofy in your combo.
Old 07-23-2017, 11:09 AM
  #119  
11 Second Club
 
SoFla01SSLookinstok's Avatar
 
Join Date: Mar 2012
Location: South Florida
Posts: 1,541
Received 15 Likes on 12 Posts
Default

Originally Posted by Bill00Formula
I don't get how this motor can run so much better than everyone else. Are there any 427, 434 or 441 ci motors running a fast intake in a non race f-body running close to this. I don't care what they dyno. I have a 427 w/ 235 tfs heads that pretty much sucks compared to this. My 60 foots are bad but it doesn't make that much difference. Two weeks ago I was at the track in south florida and after a long cool down ran 11.27 at 128.9 with a 1.89 60 foot. My race weight is 3,650-3,700 and I have a 6 spd.
Hey Bill,

Don't get too discouraged. Your car runs good for what it is. As I don't know exactly, what is your best run down the 1/4? Your car is full weight. Hammers car is not. Just a couple differences to spot between you & hammers engine combos:

-You do have more ci, 427-388, but you guys have the same piston size. 4.125"
-Your motor is running on a non-ported fast 92. hammer has the medium runner fast102.
-You have 1-7/8 headers, hammer 2'' headers
-hammer has a solid roller cam, your still on a hydraulic roller.
-You make all your power under 7krpm, hammer is spinning close to 8krpm
-Along with the different weight, gearing, etc.

Also that it's summer down here. Nobody is going to run great times/mph in this crap air we have now. A 50mph tail wind helps a bit also

For what your car is, & what it runs, I've always respected your car. I don't see many N/A street cars getting 130+ traps. Your car is the fastest N/A f-body I see at the track. Your car runs good.

Regards
Old 07-23-2017, 11:10 AM
  #120  
Moderator
iTrader: (4)
 
Darth_V8r's Avatar
 
Join Date: Jul 2014
Location: My own internal universe
Posts: 10,446
Received 1,838 Likes on 1,146 Posts
Default

Originally Posted by big hammer
235's are good heads, but I just wouldn't use them on a 427. Doesn't necessarily make me right I suppose just a personal preference.

Some of these higher flowing cathedrals are darn good heads in their own right BUT I think fast intakes really limit them... a ported. Fast 102 flows maybe 290 cfm so it may limit a guy to the 530-540 rwhp range. Which is still decent but not what the heads are capable of. Just throwing some theories out there

Also the runner harmonics of a cathedral fast just aren't right for making really good hp over 6500 rpm. Seems like if you can get your TQ curve to stay pretty flat up top while continuing to climb in RPM that's when hp really starts to build
That's damn right^^^

You've got two options for hp. Either your peak tq is moved higher in rpm or your curve is wide and flat. You won't do it with long runners unless you try to cheat it higher with a camshaft, in which case it peaks and falls fast.

The benefit of long runners is air momentum. So the cylinder continues to fill even as the piston is on its way back up. Kind of a weird way to see it but g/cyl is tq. G/sec is HP. After you hit peak tq, your torque falls, but hp still increases. Because you're getting more cylinder fills per minute, even if they're slightly less efficient in terms of g/cyl.

At high rpm, you don't need air momentum. You need airFLOW. So now, breathe through a straw. Cut the straw in half, and it's easier to breathe. Go to a bigger diameter straw it's even more easier to breathe. The heads can almost always outflow the intake. Intake is a straw the engine has to breathe through.

Now, take your heads. The runners on the heads are themselves straws. However you can't make them shorter. You CAN make them wider.

Hammer did a tremendous job matching the heads, intake, and cam to his intended rpm range. Also, hammer is a great driver. Knows his shift points, knows how to work a car. Very often I see guys shifting at 6500, because that's peak power. There is so much power past peak not being used when you do that. Hammers peak hp was around 6800 rpm, so he's probably shifting at 7500 or so. Maybe higher. With a solid valvetrain, he can safely rev much higher.


Quick Reply: 388 finally hits the dyno



All times are GMT -5. The time now is 02:28 PM.