Visit The Dirt Forum for More Information

Author Topic:   Another 'Headers on Metric' Post
Deak-Jr
Dirt Forum Racer

Total posts: 81
posted February 01, 2005 06:46 AM  
'84 Monte Carlo, 4-speed BUT no stock linkage (homemade cable setup). 400 sbc, stock rods/pistons/crank, dbl-hunp heads, stock intake, q-jet carb, 280 cam. Gotta pull 12" vac @ 1K.

I looked at the Schoenfields suggested from some posts here (185M & 186M). My main question is tube size -- 1-5/8" (3" collector) vs 1-3/4" (3-1/2" collector).

Any suggestions appreciated. Thanks.

sledgehammer
Dirt Forum Racer

Total posts: 94
posted February 01, 2005 03:55 PM  
Shoenfield suggests for motors 350 hp and less use the 1 5/8 primary, 350 to 600 hp use the 1 3/4.

Thanks the best I can remember.

racin78p
Dirt Freak

Total posts: 333
posted February 01, 2005 04:05 PM  
I run the High Velocity Shoenfelds (185V) they are a step up header. Tubes coming out of the flanges start at 1 1/2 or 1 5/8 then go bigger. Supposed to add low end torque, coming out of the corners. I think they worked well for me, but others don't like the Shoens. To each his own. These headers I run are about $210. Not cheap.

------------------
racin78p
if it ain't fun, then don't run

powerglides
Dirt Freak

Total posts: 374
posted February 02, 2005 04:39 AM  
Holley flow-tech #11108flt 1 1/2" primary 2 1/2" collector semi shorty they fit easily and keep velocity up. Only $98 Now before you scold me for the small diameters take them to your motor guy for a dyno test. That's what winter is for. That is the only REAL way to tell.

racin78p
Dirt Freak

Total posts: 333
posted February 06, 2005 01:43 AM  
I just ordered a set of Flow Tech Afterburner headers, Summit Racing part # BIG - 49100 FLT. They are comparable to the Shoenfeld High Velocity that I ran last year (and WAS going to run this year). The Flow Techs are $145.88 and the Shoenfelds are about $210. Plus the Flow's are painted where as the Shoen's aren't. Just in cse anyone might be interested.

------------------
racin78p
if it ain't fun, then don't run

sjakes
Dirt Freak

Total posts: 254
posted February 06, 2005 08:28 AM  
racing78p,

What are you putting them on? Let me know how they fit etc.

Thanks
Shawn

------------------
visit us at www.geocities.com/sjrracing


bobaluuu
Dirt Freak

Total posts: 474
posted February 06, 2005 09:13 AM  
the afterburners will fit a metric setback, we ran then for 2 years, I had great results using them. Holley says they're perfect app for street stock with small mods in hp

racin78p
Dirt Freak

Total posts: 333
posted February 08, 2005 02:44 AM  
bobaluuu got it right. 85' Regal with 82' Olds body. Engine set back about 1 1/2" (all we could get without notching cross member for fuel pump. Haven't put them in yet, but I am thinking I will like these guys VERY much just by looking at the picture of their shape. I also have a cable for the clutch rigged up, so I was not concerned that these headers do NOT fit stock mechanical linkage. I'll post Shawn when I get 'em in!

------------------
racin78p
if it ain't fun, then don't run

sjakes
Dirt Freak

Total posts: 254
posted February 08, 2005 05:29 AM  
Much appreciated bud!! Mine will need to be replaced soon, so I'm going through now what you have made a decision on.

Thanks for any insight.

    

Back to the Archives