do i need a mag?

Old 09-20-2011, 09:19 PM
  #1  
maxpower671
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Dec 2005
Posts: 117
Default do i need a mag?

BBC427, methanol injected, nat asp. 1/4 mile drag,

do i need a magneto? :wink:
maxpower671 is offline  
Old 09-21-2011, 05:36 AM
  #2  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

Nope you need a MSD unit with, anything from a 6AL to a 7AL3 box. More fire power and less HP drain than a Mag.

JMO

Zip.
zipper06 is offline  
Old 09-21-2011, 07:13 AM
  #3  
maxpower671
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Dec 2005
Posts: 117
Default

Originally Posted by zipper06
Nope you need a MSD unit with, anything from a 6AL to a 7AL3 box. More fire power and less HP drain than a Mag.

JMO

Zip.
do you run methanol and a MSD unit? which box? no problems?
maxpower671 is offline  
Old 09-21-2011, 07:43 AM
  #4  
ccperf721p
Senior Member
SENIOR BUILDER
 
Join Date: Nov 2008
Location: Phoenix AZ
Posts: 116
Default

I run a 7AL2 with a pro power coil on a 15:1 alky injected 434. On a couple of occasions it has fired a 15% tip of the can without issues.
ccperf721p is offline  
Old 09-21-2011, 07:59 AM
  #5  
maxpower671
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Dec 2005
Posts: 117
Default

Originally Posted by ccperf721p
I run a 7AL2 with a pro power coil on a 15:1 alky injected 434. On a couple of occasions it has fired a 15% tip of the can without issues.
what sparkplugs? how much gap?
maxpower671 is offline  
Old 09-21-2011, 07:14 PM
  #6  
hammertime
Senior Member
RACING JUNKIE
 
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Default

Originally Posted by maxpower671
Originally Posted by zipper06
Nope you need a MSD unit with, anything from a 6AL to a 7AL3 box. More fire power and less HP drain than a Mag.

JMO

Zip.
do you run methanol and a MSD unit? which box? no problems?
With my 582 and alky injection, I ran a 6al, 7al2,7al3 and 7530t digital. No difference in et with any and they all did just fine.
hammertime is offline  
Old 09-21-2011, 08:14 PM
  #7  
maxpower671
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Dec 2005
Posts: 117
Default

thanks David....thats the kind of info i was looking for! gonna get my box checked out...
maxpower671 is offline  
Old 09-21-2011, 10:05 PM
  #8  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

Originally Posted by maxpower671
Originally Posted by ccperf721p
I run a 7AL2 with a pro power coil on a 15:1 alky injected 434. On a couple of occasions it has fired a 15% tip of the can without issues.
what sparkplugs? how much gap?
NGK 8's set @ .024 gap, with a 6AL, same setting with 7AL2. I've never ran a 7AL3, so i don't know the difference.

Zip.
zipper06 is offline  
Old 09-21-2011, 10:49 PM
  #9  
ccperf721p
Senior Member
SENIOR BUILDER
 
Join Date: Nov 2008
Location: Phoenix AZ
Posts: 116
Default

I run an autolite AR3934 @ .030
ccperf721p is offline  
Old 09-22-2011, 05:45 AM
  #10  
hammertime
Senior Member
RACING JUNKIE
 
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Default

Originally Posted by maxpower671
Originally Posted by ccperf721p
I run a 7AL2 with a pro power coil on a 15:1 alky injected 434. On a couple of occasions it has fired a 15% tip of the can without issues.
what sparkplugs? how much gap?
AR3910s gapped at 30, Extended tip plugs, A lot of engines miss without them.
hammertime is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service