SBC 4/7 swap headers
#1
Member
MASTER JOURNEYMAN
Thread Starter
Join Date: Aug 2009
Posts: 44
SBC 4/7 swap headers
What header designand size would be best for a SBC 421?
10.5 Compression AFR 235 heads,Demon 1050 carb, Edelbrock Fully Ported Super Victor, 675/645 278/284@50 106ICL 110 lobe sep. 4/7 firing order swap.
Need headers for drag use.
10.5 Compression AFR 235 heads,Demon 1050 carb, Edelbrock Fully Ported Super Victor, 675/645 278/284@50 106ICL 110 lobe sep. 4/7 firing order swap.
Need headers for drag use.
#5
Senior Member
MASTER BUILDER
Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244
Re: SBC 4/7 swap headers
Originally Posted by bubbaf100
What header designand size would be best for a SBC 421?
10.5 Compression AFR 235 heads,Demon 1050 carb, Edelbrock Fully Ported Super Victor, 675/645 278/284@50 106ICL 110 lobe sep. 4/7 firing order swap.
Need headers for drag use.
10.5 Compression AFR 235 heads,Demon 1050 carb, Edelbrock Fully Ported Super Victor, 675/645 278/284@50 106ICL 110 lobe sep. 4/7 firing order swap.
Need headers for drag use.
#10
Member
MASTER JOURNEYMAN
Thread Starter
Join Date: Aug 2009
Posts: 44
Ventura County Street Outlaw.
Up to 440ci displacement.
Limited to only smallblocks with 23 degree heads(On Chevy's)
Single Carb only unlimited induction.
Chevy's 23 degree heads Unlimited Modifications.
Limited to dish piston and 91 octane pump gas.
Unlimited transmission and unlimited rear end.
Unlimited Cooling.
Unlimited tire.
No power adders.
In the future I'll change classes and run 14:1 on Alky.
Dual 950 RS Demons with Hogan Sheetmetal intake.
Top it off with a Dual shot Fogger. 150 at the gate and another
200 shot. I'm crazy I'll still drive it then on the street too.
Up to 440ci displacement.
Limited to only smallblocks with 23 degree heads(On Chevy's)
Single Carb only unlimited induction.
Chevy's 23 degree heads Unlimited Modifications.
Limited to dish piston and 91 octane pump gas.
Unlimited transmission and unlimited rear end.
Unlimited Cooling.
Unlimited tire.
No power adders.
In the future I'll change classes and run 14:1 on Alky.
Dual 950 RS Demons with Hogan Sheetmetal intake.
Top it off with a Dual shot Fogger. 150 at the gate and another
200 shot. I'm crazy I'll still drive it then on the street too.