Tuskyz28

I want to know how critical is port matching the heads to the intake...
Let's say I have a 408ci motor with out the box aftermarket heads and a out the box fast intake and the car run 10.9s at the track..
How much of a E.T drop or mph gain will I see at the track if I sent the heads and intake off to a good porter to get them port matched to each other?

Rise of the Phoenix

iTrader: (27)

I'd be willing to bet you'd pick up some, but probably not worth the time, effort, and money requires to take the heads and intake off, ship them, pay to have them port matched, pay to have them shipped back, and then install.

blk00ss

iTrader: (66)

I could swear that I've read somewhere that, I believe it was Mamo, said you can make a template of your heads and he can work with that and the intake. Don't hold me to that verbatim. Lol.

Orange Juice

iTrader: (3)

Which intake, I just did my Fast 102 and it wasn't very hard

KCS

iTrader: (20)

It depends how big of a restriction the intake is. If you have a big engine with big heads and you want to turn a lot of RPM, an unported FAST is basically like a NASCAR restrictor plate (cathedral port especially).

Tuskyz28

Fast 102mm intake Orange Juice.

KCS I KINDA agree with you but rectangle port don't really start to shine to 5500 rpm or so..... even on a big cube motor the cathedrals hold they ground well. The fastest all motor pump gas LSX setup uses TFS 235 heads on a 445 ci motor by HKE with a fast intake.....

blk00ss

iTrader: (66)

No ****? Got a link to the car? Would like to read up on it.

Tuskyz28

https://ls1tech.com/forums/texas-members/1032880-project-445-stroker-alive.html#post10655715

Car is a example of what a well thought out combo can really do!!

blk00ss

iTrader: (66)

Yes it does run good. Especially to be footbraked. But it does only weigh 3100lb lol. I really need to lose some weight out of my pig. ☹️

KCS

iTrader: (20)

I'm not really sure what you're trying to say.

Tuskyz28

402ci,11.6:1 compression,24x/25x cam,out of the box tfs 235's,out of the box fast 102mm.

Car runs ..... 10.6 at 130 mph with 1.5X 60ft.

Now how much faster will I be at the track if the heads/intake was optimized to each other ?

KCS

iTrader: (20)

I would venture a guess of around 1-3MPH. I forget how large the opening is on the 102, but I'm pretty sure it's smaller than the opening on the TFS 235 heads.

Orange Juice

iTrader: (3)

I took a pick/scribe tool and heated it up to bend into a "U". Held the base down on the head and using the U reached inside the intake and used the head as a guide to scribe the face of the intake. Used a cutting tool on a drill to open them up to the lines. Feathered out the rest of the intake with a sanding roll.
Anyone ever try and use a fill compound. If there was something safe to use I would have built up to match the top of the cathedral section of the head.

Tuskyz28

Hmmmm interesting

Orange Juice

iTrader: (3)

Yeah, I was going to make cardboard templates or just smear grease on the heads to get a line and then I thought of this. Worked well.

Orange Juice

iTrader: (3)

Just a caution, when I pulled the flutes out of the base about half the gaskets either broke or were broken. If I had known I would have ordered beforehand. I replaced those as well as the face gaskets. Left the TB and full clamshell gasket as is.

Tuskyz28

After all the time spent on the intake can you tell a "seat of the pants" difference ?

Orange Juice

iTrader: (3)

Still have more work to do to get on the road. I also found cutting a 5mm allen key down to just a shaft and using a 5mm box end wrench works well for reaching into the back bolts of the intake. Used a bit of heat shrink as a stopper to hold the wrench up.

BrntWS6

iTrader: (7)

I did it this way as well, no need to make a template or take the heads off. This method works very well.

Orange Juice

iTrader: (3)

Guess I'm not so smart after all