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randy wilson · 12-28-2013, 06:34 PM

Ya but Ed, you may be smarter then I. I ran a 10.5 lb. spec car for 2 years, and went 6.29 in the 1\8th at 109.67. At 10 lbs. with a 291 iron head bowtie, that we ran in SS/CS at 10.5 lbs. we went 6.06 at 114.96 at the same track.That's all I have to go on. Most, not all, but most SS\BS cars run 9.0's, to 8.80's. I think the heads, with a 3,000 # min. at 9#, will be in the 9.40's to start. Just a guess. It ain't hard to reduce the index. It only takes an ink pen. Big difference berween a spec head, and a 15 degree chevy. Also, 10 flat is just the index. If they're like the other super stockers, and run 1.5 under, they'll be running 8.50's.

12-28-2013, 06:34 PM	#5
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: Econo Modified Ya but Ed, you may be smarter then I. I ran a 10.5 lb. spec car for 2 years, and went 6.29 in the 1\8th at 109.67. At 10 lbs. with a 291 iron head bowtie, that we ran in SS/CS at 10.5 lbs. we went 6.06 at 114.96 at the same track.That's all I have to go on. Most, not all, but most SS\BS cars run 9.0's, to 8.80's. I think the heads, with a 3,000 # min. at 9#, will be in the 9.40's to start. Just a guess. It ain't hard to reduce the index. It only takes an ink pen. Big difference berween a spec head, and a 15 degree chevy. Also, 10 flat is just the index. If they're like the other super stockers, and run 1.5 under, they'll be running 8.50's. __________________ don,t have one Last edited by randy wilson; 12-28-2013 at 06:39 PM.