Could anyone please advise me on the best way to go in regards to fitting stainless steel block huggers or full length hooker style headers(extractors). Is there a potential for more radiated heat from the longer units???? Has anyone been down this path?? I dont want to proceed then find that I have painted myself into a corner. Thanks in advance!Secret handshake etc etc.

Regards in anticipation.

Plumma

 

Full length are better for performance. Shortys are more for stockers.

 

Thanks Ganey. I was leaning toward the full length-performance and all.The engine I am presently building is very similar to yours. 385 ci,edelbrock aluminum heads,750 holley, airgap etc etc.
Thanks very much for your reply.

Regards

Plumma

 

I have been rec. Dynomax full length headers, flow & fit great & many have them now. Flowtech is now selling them. You can get ceramic coated headers.

 

plumma,
You should look up the Sanderson Headers site. From memory it states that at an engine speed that suits the length of the long tube headers, there is about a 5% torque increase over block huggers. At most other speeds, there is little if any discernable difference between the two, but at lower engine speeds, where most of our driving is done, the block huggers generate more torque.

So, if you want to fit long tube headers, you need to determine the engine speed at which you require the maximum torque, then contact the header manufacturer of your choice and seek their advice. Then you have to make sure that the headers will clear your steering box, oil filter, starter motor, transmission, cross member, etc. Then you have to drive at or close to that engine speed all the time to make the most of it.

For a street driven car, you would be unwise to go past block huggers, as they are compact and will clear most, if not all, factory fitted "obstructions."

Fianlly, long tube headers are generally used on race cars that are built to be running at maximum revs most of the time. That way, the full power potential of the engine is maximised. For a street car, they're a waste of money.

Regards from Down Under.

aussiejohn

 

How about some Tri-Y's? Great low end power/torque and some decent gains up top.

 

Headers build torque at take off.
If we were talking about a stock 305, yea a waste of money, but as easy and good fitting as a set of full lengths are its a very good step in the right direction.
On a side note, I wonder who makes the "Summit Headers"?
I heard its Headman but I leaning towards its Dynomax, Flowtech?
Either way they really fit good and mine never leak.
1 Secret I do is I cut the bars off the tubes that hold them togather so each end tube is independent from the center ones and then they all don't pull on each other and leak.

 

Tri-Y are good for mild engines.

Sounds like some here have never had real headers.

Plumma
Sounds good. Full length headers are for Performance.

 

Tim
Yes, when I looked at the pics. a while back, they looked like Summit may be selling the Dynomax, Flowtech under their name.

PS Dynomax also sold Blackjack which had the same shape which might be the Summit ones.

 

So that's what happened to Dynomax headers. I've used this brand of long tubes on several cars over the years, and never had any fit issues. Bought a few set's sets from Summit Racing coated, and were actually shipped to me from Jet-Hot coating's. Some guy's here like the Patriot brand, but have no experience with them myself. The pricing does't seem to bad though.

 

If you look at the summit brand headers and the flowtechs side by side, they sure do look exactly the same, don't they? I mean EXACTLY the same. If they are the same thing, why not save 12 bucks and get the summit brand headers? Although, ya can get the flowtechs ceramic coated for 144 extra, that sounds like a pretty good deal right there.

http://www.summitracing.com/search/D...E/?Ns=Rank|Asc

http://www.summitracing.com/parts/SUM-G9003/


Scott

 

Thanks Aussie John. The headers I am looking at are designed for 1968 to 1982 vettes. So I am hoping I do not have any fitment problems.
Regards Plumma

 

Obelisk. Thanks. Will check out these before I buy>

Regards

Plumma

 

Tim. I agree.
Regards

Plumma

 

Hi Ganey. Pretty sure that I will go with the full length headers. Feedback from fellow Forum members has been very helpful. Thanks again. If I am building a strong engine I dont want to take shortcuts,if you know what I mean.
Regards

Plumma