3800 porting clips
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- Опубликовано: 12 сен 2024
- Clips from the New porting DVD created by Valako Race Heads for GM 3800 V6 cylinder heads. This DVD is a step by step real time video in great detail how to properly port and polish L67/L36 heads. The video covers information the so called pros don't know. For more info: valakoraceheads@aol.com
Nice porting job. I have 3 sets of 3800 heads. One pair is NA and the other two are SC. Going to initially practice on the NA heads, then work on my SC heads for my 2000 Buick Regal GS. Going to eventually turbo charge the SC block.
We use carbide cutters usually 1/2 oval 4 inch shank. Buy them from a company that specializes in carbide burrs. Most tool trucks sell China carbide that wears quickly.
Adam, I believe the castings are the same.
for 35 years ported only steel heads and was very nervous about doing my first set of aluminum heads... 5 sets in and Ill never port another iron head as long as I live ... what used to take me weeks now takes me days and that taking my time. I can do port matching 2-3 inches in on a set of heads in less then 3 hours (nothing fancy but only takes 3 hours) but then again I have commercial grade carbide burrs not the cheap ones. these run around 65-85 each witch seems like a lot but they are still sharp after 30 years and can effortlessly cut a cylinder head in half in no time so not exactly for beginners as one slip and the head is toast
How wide is the tooth spacing on those burrs? I have a tapered one that cuts super fast like an endmill (only 5 or 6 flutes, 1/4” shank) but will catch and jump hard at any instant if im not holding it really steady
Wanna pory my heads ?$
& is that a stone being used ?
Can or can you not use stone on these heads ?
these engines are very popular here in australia in our holden commodores
L57 and L36 are identical castings but the L67 has the injector ports on the head itself instead of on the intake. Might be something to consider, if the casting interferes with the spray pattern at all
these intake ports will flow to .700 lift+ . with the stock openings. I wouldn't be afraid of valve lifts of .650 for the street. most builders won't go there maybe because the can't stabilize the port to get the flow? it's nothing for a bb chevy to have a big hydraulic roller cam with much heavier valve train
He had to shave down or at least resurface it after coloring outside the lines with the cutter. I was going to do this on a 318 I rebuilt but everybody said take it to a pro. I did and it was beautiful. However, it wasn't a noticeable power increase. Even bored out some there was just a little bit of noticeable power. The engine needed rebuilt so porting and polishing was that much extra to do and the rebuilt engine ran for over 100,000 miles. But I wouldn't just take apart an engine for porting and polishing.
Nice are you still porting heads?
Hi just when porting the exhaust sshould I gasket match it or is that 2 much?
Looks very nice. so we can see that at 28" of water it flows about 40 percent of what? can you give us actual flow numbers?
L67 I'm referring 2.
Looks great! you still in business? how much does this cost?
on the 3800 did u touch the cylinder roof @ all?
hi mate u know when u port the s/c 3800 lim do u touch the rear.of the intake runner?
hi val how many millimetres should i gring from the exh&int bowls ?
Would the porting of the N/A head, L26 and L36,vary much from the 67 and 32 head?
Do you always do your radius's first?
hugoortiz05
sorry for the late response but yes cut the radius first.
do the bowls first
How much hp do you gain
Can someone tell me what the tool call with the sandpaper, not the die grinder, but the bit he was using at 2:45 , I like the fact that you able to unscrew the sandpaper and I don’t know what it’s called. Someone lmk
It’s a mandrel specifically a “cartridge roll mandrel” most are 1/8” by 1” but can very and the sandpaper rolls come in straight and tapered, the sandpaper quality you get what you pay for.
hi m8 how big is 2 big of a port?
MicTheGreaseMonkey. Greetings, dont believe the openings need to get any bigger than what the are stock. you dont want to lower the floors, cant go much higher on the roof.
youll have to modify the intake gasket. no real gain from what i found
I dip my carbide burrs in a pot of oil every 2minnets when I cut it looks like you do it dry its 10 times harder dry
Jedi3 that’s what she said
I've been told bad things about using a cutter on cast iron with oil.
What kind of drill/bits are you guys using?
lafenatu they look like ordinary rotary burrs
where can I buy a spiral burs exacly the same of the the one on the video? Thanks
Carbide Rotary Burr long
id buy from the internet to save sum $
please let me know the site and name , also of the ones in minute 2:00 cheers
eBay, Menards, any auto parts store, they're just regular rotary burrs.
Should explain it mate
Where are you when I need you
Without posting your before and after results...the video is a waist of time....what was the air flow #s in Stock form....and what were the #s after your porting...? Thats how to properly do a Learning Video...
Frankie Ford, check out my other videos on the 3800 heads they show heads on the flow bench
@@jimvalykeo1236
Ive been a Cylinder head Porter for 35 years....i have hundreds of heads under my belt....i know most of the porters in my Area....and ive observed that evey Porter has his own style....There are some hillbilly Porters on the Net that can really Maul a set of heads...and there lavished with loving comments...because the Viewers dont know what there looking at either.....Ive seen beginners do some really nice work...and ive seen so called Experts So Crude...they should use a chain saw....i like what i see in your video....Conservative clean work...
Leave the chainsaw in the shed...
Always show your results...👍
Frankie,
Hey genius, this video is clips from an hour long dvd
@@jimvalykeo1236 damn harsh reply there buddy, he was complementing your work
All that work for minimal hp gain.
the heads are not the problem, the runner lenth on the intake needs to be longer
flow bench from the 40's
I want a 14 second vs commif mmmm,
yorki gayi afgani stfu what did that even mean your a muppet