Possible header option

[ron19]

I'm looking at a set of headers and want to know if anyone has experiance with them or if anyone knows of drawbacks associated with this type of header. They are made to fit 67-72, but I've seen in other posts were others have used those year of headers. For my application, I'm wanting a bigger tube header as the 1-5/8 typically made for these years won't flow enough for my 406 I've built. I've attached a picture and a link to Summits site.

http://store.summitracing.com/partde...32#Application

[jason65]

I have something close to that and it I lower my truck or go over a some big rocks or something I'll drag. You can see pics on my thread. So what are these goin on anyway?

[ron19]

Originally Posted by jason65

I have something close to that and it I lower my truck or go over a some big rocks or something I'll drag. You can see pics on my thread. So what are these goin on anyway?

Hey, thanks for the reply. Their going on a 65 C10, lowered about 2" in front and 3" in back. I have a regular set of 63-66 headers, 1-1/2" tubes on it now that clear fine, but I want the bigger tubes (1-3/4").

[ron19]

Well, without much feedback, I went ahead and bought them. I installed them and figured I'd let everyone know how well they fit. I'm not going to use the clutch linkage, so that wasn't a concern. So, withstanding that, they fit absolutely perfect! They have plenty of room on each side and the collector exits right at the frame openings for the exhaust.

[joe231]

those look good!!!
but man they hang low!
you have a beautiful engine, btw

[ron19]

Originally Posted by joe231

those look good!!!
but man they hang low!
you have a beautiful engine, btw

Thanks for the compliment, it's been a lot of hard work. Actually, as far as hanging low, the picture is deceptive. I'll have to get a better pic, but they hang just as low as the cheapo headers I had on there before, and with a 2" spring drop in front and 3" in back, there are no clearance issue's. I'll get a better pic when I get them put back in (pulled the motor because the valve covers hit the firewall, need to clearance that to reset the lash on the valves).

[TimE]

Originally Posted by joe231

those look good!!!
man they hang low!
you have a beautiful engine, btw

What is this---Forum Pick-up Lines 101???



ron19---That motor looks good!! Keep it up.

[joe231]

^^^^

[Captainfab]

Originally Posted by ron19

Thanks for the compliment, it's been a lot of hard work. Actually, as far as hanging low, the picture is deceptive. I'll have to get a better pic, but they hang just as low as the cheapo headers I had on there before, and with a 2" spring drop in front and 3" in back, there are no clearance issue's. I'll get a better pic when I get them put back in (pulled the motor because the valve covers hit the firewall, need to clearance that to reset the lash on the valves).

Glad to hear they fit. I wonder if they would clear the clutch bellcrank? Than sux that the valve covers hit the firewall.......I gotta get me a set of those someday. And x2 on the good looking engine....what heads are those?

[ron19]

Originally Posted by Captainfab

Glad to hear they fit. I wonder if they would clear the clutch bellcrank? Than sux that the valve covers hit the firewall.......I gotta get me a set of those someday. And x2 on the good looking engine....what heads are those?

When I get the engine back in there, I'll try and see if the bellcrank linkage looks like it would clear or not, and take some pics. Those are AFR 190cc heads, ported and gasket matched. They are supposed to be some awesome heads for power, this is my first experiance with them. I read some dyno tests with a 383, 9.5:1 cr, these heads, with mild cam, same intake, ignition, etc, they were getting 500+hp. So with my setup, 406, 10.3:1cr, aggressive cam, same intake and ignition, was hoping to get 525hp or more.... sounds logical, right...haha.

[Captainfab]

Originally Posted by ron19

When I get the engine back in there, I'll try and see if the bellcrank linkage looks like it would clear or not, and take some pics. Those are AFR 190cc heads, ported and gasket matched. They are supposed to be some awesome heads for power, this is my first experiance with them. I read some dyno tests with a 383, 9.5:1 cr, these heads, with mild cam, same intake, ignition, etc, they were getting 500+hp. So with my setup, 406, 10.3:1cr, aggressive cam, same intake and ignition, was hoping to get 525hp or more.... sounds logical, right...haha.

Cool that would be good info to know. I agree on the AFR's from what I've read they are the shiz. Your engine sounds alot like the 406 I want to build for my '63 SWB. What cam are you running? With the right setup 500-525 should be achieveable

[kdrodworks316]

Not to hijack the thread or anything, but here is what 525hp looks like without a trip to the machine shop and $1000's later...just for you John, enjoy!

[Captainfab]

Puttin that in yer F**d are ya?

[jchav62]

I have Heddman hedders on my truck. They hang down a little less than yours My truck's lowered and they'll drag on some speed bumps and driveways.

[ron19]

A little update:

I pulled the engine out after the breakin, so now the engine is ready to go and have some wiring and accessory work to do before re-installing the engine. I wanted to get back and respond to some open questions left in this thread, with pics.

1. Here's what it looks like with the rebuilt alternator (1 wire), new wire looms cause they were a mess and other tid bits...

2. As far as the headers clearing the bellcrank, I took some closeups of the driver side and the bolt hole (or where it would be, my engine don't have it) is clear from the header pipes. Another view shows a clear path straight back.

3. Cam: I'm running a old solid lift cam from my stock car days. Specs are Lift: .518 IN .530 Dur: EX 243 IN 251 EX @ .050

Should pack some punch..... I called Comp Cams for a hyd roller option and wanted to compare this setup that I have for $0 for the hyd roller option that's real popular with the AFR heads that put out 500+hp on a test 383 and tech said that the cam I have will be much more radical and buy the hyd roller only if I wanted to tame it down a bit....LOL So I saved my $1000.....

[ron19]

And final pic, rear view

[pheengurs]

so it looks as if those are touching...right?
which would be bad in the long term then...

I've been searching the forum and a few other places for a definitive answer to the header question on our old trucks...

my specific application is a 64, K10, 4spd std, 350transplant. she sees mud and rocks and all manner of nasty off roading... my exhaust badly needs replacing. I've got the old double hump mainifolds, my exhaust is leaking like a seive cause rusted to crap, but it's tucked up nicely, doesn't contact the engine, or frame, or clutch linkage, or the big old starter, etc...

I love the sound of headers, and I want headers that keep the entire exhaust from being exposed below the frame like this old exhaust does.. what is a guy to do?

[ron19]

[QUOTE=pheengurs;3219684]so it looks as if those are touching...right?
which would be bad in the long term then... hmmm...

I'm not sure what you mean by touching. Right now, sitting on the engine stand, they aren't touching anything......cept the head where they bolt too. They actually clear pretty good.

However, I do wonder how far below the oil pan other headers hang....???

[pheengurs]

ah, sorry, to me the last pic looks like the header tube is touching the motor near the oil filter... so if it clears that, well, that's good then!
;-)
now I wonder about how they'd clear shift linkages, or anything else that might be in the way...