Best exhaust for an 87 Grand National?

motorheadmike

Geezer
Nov 18, 2009
8,618
113
Saskatchewan, Truckistan
Including the insanity MM pointed out on his Camaro, copying the high performance factory head pipes.

I don't wanna think about that.

However, part of me wonders just how much power is locked up in these turd-80s V8s. A die grinder uncorking would be a fun exercise in futility.
 
  • Agree
Reactions: 1 user
Oct 14, 2008
8,040
113
Melville,Saskatchewan
I don't wanna think about that.

However, part of me wonders just how much power is locked up in these turd-80s V8s. A die grinder uncorking would be a fun exercise in futility.
Dale Robinson did exactly with the Engine Master's 307, 435 hp then over 450 hp on the second tweak. Not for the faint of heart. The better 307 5A heads needed massive work including Epoxy and welding.
 
  • Wow
Reactions: 1 user

jlat

Greasemonkey
Jan 25, 2013
212
28
hello people: I went with the RJC that has a crossflow muff. It installs in stock location and I like that but it's more like a single shot. I had a Bowling Green dual system once but it never hung right but it sounded cool. More of a rumble than the RJC.
IBBY
 
  • Like
Reactions: 1 user

CopperNick

Royal Smart Person
Supporting Member
Feb 20, 2018
1,640
113
Canada
On the initial pull away at the flag, am I correct in thinking I hear a whistle coming from that GN? 4 inch exhaust with a turbo would be just about right. You'd never hear the blow-off valve because the shoe is so consistent on the wah-wah pedal, that there is very little braking done. Also, the suspension in that ride must be about rock solid to take corners as flat as it does.



Nick
 
  • Like
Reactions: 1 users

CopperNick

Royal Smart Person
Supporting Member
Feb 20, 2018
1,640
113
Canada
Okay, this answer is a double post. The net keeps stealing bandwidth around here for the businesses and the forum goes into standby mode so from time to time this occurs.

On the initial pull away at the flag, am I correct in thinking I hear a whistle coming from that GN? 4 inch exhaust with a turbo would be just about right. You'd never hear the blow-off valve because the shoe is so consistent on the wah-wah pedal, that there is very little braking done. Also, the suspension in that ride must be about rock solid to take corners as flat as it does.



Nick
 
Last edited:

motorheadmike

Geezer
Nov 18, 2009
8,618
113
Saskatchewan, Truckistan
On the initial pull away at the flag, am I correct in thinking I hear a whistle coming from that GN? 4 inch exhaust with a turbo would be just about right. You'd never hear the blow-off valve because the shoe is so consistent on the wah-wah pedal, that there is very little braking done. Also, the suspension in that ride must be about rock solid to take corners as flat as it does.



Nick

It had some work:

And I learned how to two-foot drive long ago. Constant load makes for quicker spool. I use the same technique in my Hellcat... but, try not to nuke the tires.
 
  • Like
Reactions: 1 user
Oct 14, 2008
8,040
113
Melville,Saskatchewan
Needs dual 4" stacks for MAX HP.

Side exit?
.

Or perhaps out the back for a cleaner look?
View attachment 189289
That Mustang I could see someone doing that in Saskatchewan. There is a Dodge Cummins 3/4 ton in town that makes that Mustang look like a sleeper😳.
 
Last edited:
  • Haha
Reactions: 1 users

Northernregal

Sloppy McRodbender
Supporting Member
Oct 24, 2017
2,958
113
Red Deer, Northern Montana territory
That Mustang I could see someone doing that in Saskatchewan. There is a Dodge Cummins 3/4 town in town that makes that Mustang look like a sleeper😳.
At least the vette has rain caps on the stacks. Chrome is classy....
 
  • Haha
Reactions: 1 users

CopperNick

Royal Smart Person
Supporting Member
Feb 20, 2018
1,640
113
Canada
Yeah, but the 90 degree bends on the Vette stacks would just about destroy any velocity or scavenging in the exhaust plus make a great spot for water vapor in the pipes to pool and generate cancer of the tubes.



Nick
 

GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.

Please support GBodyForum Sponsors

Classic Truck ConsolesDixie Restoration DepotMike's MontesP-S-TSouthside Machine PerformanceUMI Performance

ContactAdmin@GBodyForum.comfor info on becoming a sponsor