New 408 build finally started

-
B2B8D2EA-46DE-4A3B-BE8C-0C8AD3C7FB99.jpeg
027F0ABD-F7E4-458C-BC2A-B28C4A2772EA.jpeg
Pretty bad when you have to open up your Indy 360-1 intake gaskets to use on your Edelbrock heads. Lol. Now I can mark out my ports better and make them pretty.
 
I've modified two of those pans to work with my Hedman headers. The first I used my mig welder and .023" wire. The one in the car now I used .030" filler and tigged it up, much easier to control the heat.
 
E759EB1D-4F8E-452C-B128-DA71A821EB66.jpeg
525F74AE-07D2-4CCA-9DE1-66C888645E31.jpeg
Not much progress to report but I did get to meet forabodiesonly member “killer6” over the weekend when he made the drive over to pick up the radiator out of my old 1972 (340) Duster. He was short on time but you know how that works out. We bs’d about three hours away and I got a few extra bucks out of him while he was here. Lol. I think we both made out ok and I now have money in my pocket to get my Speedmaster heads and this set of Edelbrock heads a good valve job. Kinda hard getting in the shop with everything going on in the world right now but I did get the pushrod holes plugged shut so tomorrow they will be ready to get rid of the pinch. Great meeting you Jim and you are welcome back anytime.
 
E139F687-395B-45AA-8A6F-DBAE0BE1310E.jpeg
A3702FDE-3847-4BA4-917A-F6953D2010B0.jpeg
0946A90D-2E08-4E8C-B6C0-316D85151F2C.jpeg
This is starting to be fun again guys. Not enjoying the handbport work on the pinch to much as .400 is a lot of aluminum to remove by hand. I’m actually whistling again as I grind away. 5 shop hours today and if I keep enjoying this I may even start talking on a few jobs again.
 
Okay I'm a little lost are you back on your procomps or are those your Edelbrock heads
 
K.O. SWINGER said:
Okay I'm a little lost are you back on your procomps or are those your Edelbrock heads
Click to expand...


These are the Edelbrock heads that I plugged the pushrod holes and moving the pushrod over .300. They are set up for 2.08 valves and are going on my roller cam 408.
 
pittsburghracer said:
These are the Edelbrock heads that I plugged the pushrod holes and moving the pushrod over .300. They are set up for 2.08 valves and are going on my roller cam 408.
Click to expand...
Okay yeah those are your awesome Edelbrocks, I'm caught back up now. Thanks
 
K.O. SWINGER said:
Okay yeah those are your awesome Edelbrocks, I'm caught back up now. Thanks
Click to expand...


Unless these things super impress me I won’t go down this road again. Flow wise I’m probably right there with the 360-1 heads on my car right now but I may be trying a few more tricks I’ve learned on them. It’s gone 9.42 but I’m sure the solid lifter cam is holding it back.
 
pittsburghracer said:
Unless these things super impress me I won’t go down this road again. Flow wise I’m probably right there with the 360-1 heads on my car right now but I may be trying a few more tricks I’ve learned on them. It’s gone 9.42 but I’m sure the solid lifter cam is holding it back.
Click to expand...
Is it time to release your cam spec's?
Watching with great intent
 
09A50FF2-87BA-4D01-88C7-9D8BBA6FABAF.jpeg
B76FFAAB-EBB0-422E-B668-F0BFDDD485A8.jpeg
62B6620A-F680-4421-8DC8-D7D37C12E206.jpeg
50A4F8EA-7991-475B-8029-667B6FC112A5.jpeg
Just to give you guys an idea how much time is involved in this mod I ported for one hour steady today. The pinch started at .930 and is now roughed in to around 1.270 (1.300 when finished) I straightened the common wall some and as you can see started removing the bolt bulge when the hour was up. 95% of this was done with a short burr so although I did shape the pushrod wall it has a long way to go further into the port. May hands could probably only take doing about two ports a day when taking this much material out of each intake port. So I will be switching to exhaust port shaping each day when my hands start giving out. My Foredom grinder helps a lot but fringing is grinding. Here are a couple of before and after the one hour pictures
 
John, how long did it take you to get to this point:

A90C3157-4326-4843-A717-7610FC90AD52.jpeg


Also.......If it’s feasible to come up with a fairly close estimate......I’d be curious to know how much time it took to do one “complete” intake port, not including flow bench time.

I’m also interested in the finished runner volume.

When I’m doing a porting job more serious than a bowl blend, I try to port for an hour, 10 minute break, go for another hour, etc.
Four porting hours in a day is enough for me.

Once that job is done, I’ll take a break from it for a while before I start in on another big porting job.
 
Last edited:
PRH said:
John, how long did it take you to get to this point:

View attachment 1715489050
Click to expand...


That’s not finished yet either but I’m going to say 1.5 hours on that intake port. No chamber work. If I had a mill to rough these in it would help a lot taking out that much material, but I don’t. My hands won’t take 1.5 hours of work like this. Regular porting yes but not this crap.
 
So...... 12hrs to get the 8 intake ports roughed in to that point.
It adds up fast!!

“Shaping” ports is bad enough, but just making them “bigger” really eats up time.
 
PRH said:
So...... 12hrs to get the 8 intake ports roughed in to that point.
It adds up fast!!

“Shaping” ports is bad enough, but just making them “bigger” really eats up time.
Click to expand...


I can honestly say I would never do this for a paying customer. Brett has a set of Edelbrock heads he did for Im guessing a super stock racer where the head had to come in at 170 cc runner and 2.02 valve. His buddy welded and raised the port so they could raise the runner. If I remember right it flowed around 280 cfm and cost between 10,000.00-11,000.00 to have done.
 
Those are the types of challenges he’s really good at.

Like some of those manifolds he’s heavily modified.

I’m happier doing the more “bang for the buck” type jobs.
 
You must log in or register to reply here.
-

Back
Top