Slant *       6       Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum!
It is currently Wed Apr 29, 2026 5:49 am

Unanswered topics | Active topics


» » Racing » Racing Q & A

All times are UTC-07:00



Post new topic  Reply to topic  Page 1 of 2
  [ 25 posts ]  Go to page 1 2 Next
  Print view Previous topic | Next topic 
Author Message
slantzilla
PostPosted: Sun May 21, 2006 3:08 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14837
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
This thing is great! So far, all I have had to do is jet it down 2 sizes. It flat works great. I don't know why I didn't switch to this 600 double pumper years ago. That 390 of mine is a toilet plunger compared to this carb. :lol:

I guess now I'll leave the 390's to the street guys who want to go slow. :roll:

At least a bad 390 is still better than a good Edelbrock or Carter. :twisted: :twisted: :twisted: :twisted: :twisted: :twisted:

















Hi Mike! :D

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
Dart270
 Post subject:
PostPosted: Sun May 21, 2006 6:47 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 17455
Location: Blacksburg, VA
Car Model:
Always fun to set a low ET with your car with new parts... If it's good enough for the Buzzin' car, it's good enough for your red wagon, eh?

Lou

_________________
Home of Slant6-powered fun machines since 1988
Top
   
Reply with quote  
DusterIdiot
 Post subject: Bwahahahhaaaa!!
PostPosted: Sun May 21, 2006 6:54 pm 
Offline
Board Sponsor
User avatar

Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
Car Model:
Quote:
That 390 of mine is a toilet plunger compared to this carb.

You know I noticed that when I went from the 8007-390cfm to a 600 cfm with annualar venturies...the pickup and top end were awesome...since I couldn't get my foot "off" the accelerator, my gas mileage went south... :roll:


Cool, Big D!!!

I'm actually about to try "the best of both worlds" and am working up a 465 cfm Holley with annular primaries...so I should have a fair compromise between "mileage" and "POWER" :twisted:

-D.Idiot
Top
   
Reply with quote  
slantzilla
 Post subject:
PostPosted: Mon May 22, 2006 5:18 am 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14837
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Mileage? What is this mileage you speak of? :shock: :lol:

Lou, yeah going fast is good. I am gonna try a couple things yet and hopefully will get this thing into the 11's in street trim. As it sits now it is completely street legal w/plates and insurance on it. :roll: :shock:

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
featherduster76
 Post subject:
PostPosted: Mon May 22, 2006 1:23 pm 
Offline
EFI Slant 6

Joined: Sat Apr 16, 2005 11:34 pm
Posts: 332
Location: Wilkesboro,NC
Car Model:
What jets are stock in these anyways??


Last edited by featherduster76 on Mon May 22, 2006 1:25 pm, edited 1 time in total.

Top
   
Reply with quote  
DusterIdiot
 Post subject: That's right!!!!
PostPosted: Mon May 22, 2006 1:24 pm 
Offline
Board Sponsor
User avatar

Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
Car Model:
Quote:
Mileage? What is this mileage you speak of?

I forgot you are still using the "runs per tank" measurement.... :lol:


-D.Idiot
Top
   
Reply with quote  
slantzilla
 Post subject: Re: That's right!!!!
PostPosted: Mon May 22, 2006 3:07 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14837
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Quote:
Quote:
Mileage? What is this mileage you speak of?

I forgot you are still using the "runs per tank" measurement.... :lol:


-D.Idiot
Yep, fuel and bottle both. :lol:

Mine had 68's in front and 74's in back. I went down 2 steps both sides. :shock:

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
AndyZ
 Post subject:
PostPosted: Mon May 22, 2006 5:29 pm 
Offline
EFI Slant 6
User avatar

Joined: Fri Apr 21, 2006 4:32 pm
Posts: 380
Location: California
Car Model: 1964 Dart GT
I was talked into getting a 390. It costs twice as much and now I hear it doesn't work as well on a slant? After my 390 dumped fuel all over my engine for the third time not due to over pressure I took it apart and found that the float had a rough part that was hanging up on the needlevalve. Now that I will be using a Paxton, I decided on trying a Demon blow through. I have heard good and bad so what the hell, its only $560!
Top
   
Reply with quote  
Joshie225
 Post subject:
PostPosted: Tue May 23, 2006 1:14 am 
Offline
Supercharged
User avatar

Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
Andy,

The carb Slantzilla has is a 600 double pumper not the 1850 Holley vacuum secondary 600. It's a more expensive carb.

I had my 390 flood a couple times due to a speck of dirt on the needle valve. At least it's easy to fix the on a Holley. No fuel line removal required.

Annular boosters do work well. In fact they are the best Holley booster. The straight-leg boosters in the 390 are the worst performing boosters with the down-leg boosters being in the middle somewhere. The Barry Grant Road Demon 525 has annular boosters on both primary and secondary side. They also have 4 corner idle, electric choke, and quick change vacuum secondary springs. $340 new doesn't seem too bad for all that. The 575 Speed Demon also has all those features and should be a great carb for folks running more than cam duration, but they run $400.

_________________
Joshua
Top
   
Reply with quote  
dusty7t4
PostPosted: Tue May 23, 2006 12:09 pm 
Offline
TBI Slant 6
User avatar

Joined: Thu Oct 20, 2005 2:03 pm
Posts: 113
Car Model:
Quote:

At least a bad 390 is still better than a good Edelbrock or Carter. :twisted: :twisted: :twisted: :twisted: :twisted: :twisted:
Seconded!

what fuel pump are you using now? if you weren't runnin' goofy gas would you use the same pump still?

-dave

_________________
what part of "illegal" is so confusing???
Top
   
Reply with quote  
AndyZ
 Post subject:
PostPosted: Tue May 23, 2006 1:14 pm 
Offline
EFI Slant 6
User avatar

Joined: Fri Apr 21, 2006 4:32 pm
Posts: 380
Location: California
Car Model: 1964 Dart GT
Quote:
Andy,

The carb Slantzilla has is a 600 double pumper not the 1850 Holley vacuum secondary 600. It's a more expensive carb.
I actually did catch that one... :?
I had my 390 flood a couple times due to a speck of dirt on the needle valve. At least it's easy to fix the on a Holley. No fuel line removal required.



Annular boosters do work well. In fact they are the best Holley booster. The straight-leg boosters in the 390 are the worst performing boosters with the down-leg boosters being in the middle somewhere. The Barry Grant Road Demon 525 has annular boosters on both primary and secondary side. They also have 4 corner idle, electric choke, and quick change vacuum secondary springs. $340 new doesn't seem too bad for all that. The 575 Speed Demon also has all those features and should be a great carb for folks running more than cam duration, but they run $400.
The Demon Mighty Demon blow though#5282010BT is the one I will be using on my supercharged slant.
Top
   
Reply with quote  
slantzilla
 Post subject:
PostPosted: Tue May 23, 2006 2:26 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14837
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Make sure you disassemble it and look for undrilled passages, and clean out all the junk before you use it. BG quality sucks. :shock:

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
Ron Parker
 Post subject:
PostPosted: Tue May 23, 2006 2:58 pm 
Offline
SSRN National Champion
User avatar

Joined: Thu Oct 31, 2002 3:56 pm
Posts: 1967
Location: Dalton, GA
Car Model:
Bagel is right on this. Have a MOPAR racing friend with a small block crate engine put on a brand new BG and it was a dog stumbled, could not adjust ect. Took it apart it was full of metal shavings and junk. If i was going to buy another racing carb i would buy a Holly racing carb modified by Keith Dorton. I have a 390 cfm KD double pumper that came off of a NASCAR Craftsman truck engine will smoke on a stock Slant. But would not sell it at this time Thanks Ron Parker :D







I love the smell of burnt Bagels in the morning
Top
   
Reply with quote  
AndyZ
 Post subject:
PostPosted: Tue May 23, 2006 3:09 pm 
Offline
EFI Slant 6
User avatar

Joined: Fri Apr 21, 2006 4:32 pm
Posts: 380
Location: California
Car Model: 1964 Dart GT
Quote:
Make sure you disassemble it and look for undrilled passages, and clean out all the junk before you use it. BG quality sucks. :shock:
I have used 2 in the past without any problems. Maybe just lucky so far. What is selling me on this one is it is blow through ready. I will let you know how it works. :shock:
Top
   
Reply with quote  
dusty7t4
 Post subject:
PostPosted: Wed May 24, 2006 12:09 pm 
Offline
TBI Slant 6
User avatar

Joined: Thu Oct 20, 2005 2:03 pm
Posts: 113
Car Model:
so, what fuel pump are you using, and would you use the same thing without the bottle?

-dave

_________________
what part of "illegal" is so confusing???
Top
   
Reply with quote  
Display posts from previous:  Sort by  
Post new topic  Reply to topic  Page 1 of 2
  [ 25 posts ]  Go to page 1 2 Next

» » Racing » Racing Q & A

All times are UTC-07:00

Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited