how far under in stock at Indy to qualify

[X-TECH MAN]

Originally Posted by Jeff Stout

Anyone want to change their under index number. If the fear of new sheriff in town comes true I think some head changing will happen and average will be a little slower.

OK....-.885 under !

[Jeff Stout]

Originally Posted by X-TECH MAN

OK....-.88 under !

Wow that's a big swing from your original guess. You think that much massaging going on?

[The Hawk]

Originally Posted by Jeff Stout

Anyone want to change their under index number. If the fear of new sheriff in town comes true I think some head changing will happen and average will be a little slower.

I'm good

[Darrel Goheen]

128 -.896

[X-TECH MAN]

Originally Posted by Jeff Stout

Wow that's a big swing from your original guess. You think that much massaging going on?

I would have to say YES !
I have done the same type of work on bracket heads in the past without blasting the heads with media to hide the work. It has always been worth approx. 3 tenths or a little more. The MPH always went up also. Certain brands of heads have seen an improvement of 4 to 5 tenths by correcting the OEM C.C.'s with the work.. The bracket racers in Maryland near Budds Creek used to think I could walk on water...LOL. Some of their stuff was pretty much junk to start with though. Its been about 12 years since I did any of that stuff. I got tired of my dinner tasting like cast iron, retired and moved to Fla. .
I also know it for a fact several guys are still doing it. I used to touch up (freshen up) the valve jobs on their heads and have seen what was done. I will NOT mention names because I do not want to start a war. Its not fun anymore at all !

[gsa612]

I'll go 78.under for #128.This year could be interesting!. gsa612

[Jeff Stout]

Originally Posted by X-TECH MAN

I would have to say YES !
I have done the same type of work on bracket heads in the past without blasting the heads with media to hide the work. It has always been worth approx. 3 tenths or a little more. The MPH always went up also. Certain brands of heads have seen an improvement of 4 to 5 tenths by correcting the OEM C.C.'s with the work.. The bracket racers in Maryland near Budds Creek used to think I could walk on water...LOL. Some of their stuff was pretty much junk to start with though. Its been about 12 years since I did any of that stuff. I got tired of my dinner tasting like cast iron, retired and moved to Fla. .
I also know it for a fact several guys are still doing it. I used to touch up (freshen up) the valve jobs on their heads and have seen what was done. I will NOT mention names because I do not want to start a war. Its not fun anymore at all !

Thank you. I never knew it would have been as much as 4 to 5 tenths. I need to get out more often

[Jerry Terry]

90 +

[X-TECH MAN]

Originally Posted by Jeff Stout

Thank you. I never knew it would have been as much as 4 to 5 tenths. I need to get out more often

It depends on the make and model of the head. Chevy not so much. 383/440 heads a lot. Just filling the heat riser on the 383/440 MOPAR was worth about 24 HP on the dyno. Filling the dual heat risers helped a lot on those type of heads like Pontiac.. Some Fords are not so great either. I have not looked at the newer FI stuff. Remember this was with the older cast iron heads.

[Brett C]

Giving the weather we will have....it will be really close to -1. under to get in the Big Go this year.