Header Reccomendation - Chevelle Tech
Headers and Exhaust Discussion related to Exhaust systems and headers.
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post #1 of 5 (permalink) Old Aug 8th, 19, 10:29 PM Thread Starter
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Chris
 
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Header Reccomendation

I am planning on reusing my 30 year old Hooker Competition headers on the new build. It's a .060" over 454, 10.5:1, ported/polished steel 702 heads, 850 Holley, 0.540"/0.560" lift and 242/248 duration at .050".

The headers have 2" tubes with 3.5" collectors. Is this still a good header to use? I am going tomorrow to see if they can be ceramic coated. They are in good shape except for a fair amount of surface rust.

If these can't be coated, can someone recommend a full length, ceramic coated header that fits good. The car will have a stock ride height, PS, T400 and a Vintage Air compressor.

Thx in advance.

Chris

Chris

1970 SS396 Chevelle
468 ci, TH 400, 3:73 posi
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post #2 of 5 (permalink) Old Aug 8th, 19, 10:59 PM
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Re: Header Reccomendation

I used to have those Hooker Comp headers on my car a few years ago. When I took it to the track the car went so-so. I switched to a set of the 1 3/4" tube headers and the car picked up .3 tenths and 2 mph, needless to say I was surprised so I sold the Hooker Comps. Now I am building a 468 similar to your and I have a set of Hooker Super Comps that are 2" tubes, if this set does the same then I will add some merge collectors to get the tq. It may loose. I am sure that what happened with the Comps back then.
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post #3 of 5 (permalink) Old Today, 7:38 AM
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Re: Header Reccomendation

These should work well for you:
https://www.summitracing.com/parts/b...make/chevrolet


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post #4 of 5 (permalink) Old Today, 9:45 AM
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Brian
 
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Quote:
Originally Posted by mr 4 speed View Post
I have those headers. Not a track car, but they fit well. Oil filter is very tight during removal. Drivers side does hang a little lower.
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post #5 of 5 (permalink) Old Today, 5:18 PM
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Harry
 
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Re: Header Reccomendation

Quote:
Originally Posted by SS468 View Post
I am planning on reusing my 30 year old Hooker Competition headers on the new build. It's a .060" over 454, 10.5:1, ported/polished steel 702 heads, 850 Holley, 0.540"/0.560" lift and 242/248 duration at .050".

The headers have 2" tubes with 3.5" collectors. Is this still a good header to use? I am going tomorrow to see if they can be ceramic coated. They are in good shape except for a fair amount of surface rust.

If these can't be coated, can someone recommend a full length, ceramic coated header that fits good. The car will have a stock ride height, PS, T400 and a Vintage Air compressor.

Thx in advance.

Chris
I have the same headers on my ss396 Chevelle, from 2005, ceramic coated. Sound and power are perfect. Very nasty and cool sounding. With 3 inch exhaust and flowmasters, the big cam sound at idle and WOT sound cannot be beat. There is some clearance issue that might require a dimple with the steering shaft. Big oil filter -- no problem....

The biggest issue is the ground clearance. They are not made for lowered cars. My Chevelle is lowered about 1.5 inches and speed bumps are a big issue. The lowest pipe on the drivers side has a flat spot from hitting, you can see it in the pic. I plan to change them out soon. I cannot stand how low they hang. I hope I do not mess up the sound, because they sound unbelievably great with my cam. Check pics.

PS. In this forum, a lot of people are happy with the thicker flange Hedman 2". They tuck up nice and tight. I am planning to try those next.






Harry
1970 Chevelle SS396 (408), Fathom Blue,
Original Block & Forged Crank, KB Pistons, Edelbrock 6045 Heads,Comp Cam 292H, March Serpentine, RPM AirGap,750HP,100hp Nitrous
A/F Wideband,Tremec TKO 600, 12 bolt,
30 spline Moser Axles, Richmond 3:73's, Hotchkis control arms, swaybars, springs, Wilwood 12" rotors D/S, 4 piston calipers
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