Thinking of upgrading my 1 5/8 Hooker Competition headers while my engine is pulled. Curious if there would be a significant power increase by using a larger primary tube setup. This is what I have:
408, around 11.6:1
Ported Performer RPM heads
65cc chambers, 270/232 @.500, 280/240 @.600
Solid cam, 250/254 @.050, 588/600 lift, .010/.012 lash
Rons toilet injection on alcohol
Timing set at 35*
Manual VB 727 with ~4800 stall 8” converter
4.30 gears, 28x10.50 tire
Weighs 3250 with driver
It had a Mopar purple .557, [email protected], .028/.032 lash solid cam that I am replacing with the new one listed above. The old cam was running at 4* retarded. Hopefully the new one works better. Best the car ever ran was 11.01@119 in Seattle. We mainly race at a 1/8 mile track with a 5300’ elevation running 7.20-7.30. Want to run 7.0-7.10.
Like I said it has 1 5/8 hookers into 3” collectors connected to a 3” x-pipe dumping in front of the axle. Was looking at TTI stepped headers, or their 1 7/8. Using a manual steering box, and not using the factory shift linkage. Also looking at ditching the torsion bars for coil overs. Don’t want to cut out the inner fenders.
408, around 11.6:1
Ported Performer RPM heads
65cc chambers, 270/232 @.500, 280/240 @.600
Solid cam, 250/254 @.050, 588/600 lift, .010/.012 lash
Rons toilet injection on alcohol
Timing set at 35*
Manual VB 727 with ~4800 stall 8” converter
4.30 gears, 28x10.50 tire
Weighs 3250 with driver
It had a Mopar purple .557, [email protected], .028/.032 lash solid cam that I am replacing with the new one listed above. The old cam was running at 4* retarded. Hopefully the new one works better. Best the car ever ran was 11.01@119 in Seattle. We mainly race at a 1/8 mile track with a 5300’ elevation running 7.20-7.30. Want to run 7.0-7.10.
Like I said it has 1 5/8 hookers into 3” collectors connected to a 3” x-pipe dumping in front of the axle. Was looking at TTI stepped headers, or their 1 7/8. Using a manual steering box, and not using the factory shift linkage. Also looking at ditching the torsion bars for coil overs. Don’t want to cut out the inner fenders.