4.8/5.3 LS Heads CNC Ported (Pics)

[8 SEC 109]

Removed the heads from the $250 4.8 junk yard mock up motor and sent them off to Total Engine Airflow in Tallmadge Ohio aka Trick Flow Heads for a CNC job.
New and larger intake valves 5.7l 2.00 , guides, competition valve job, new springs, valve seals, milled to 62cc, flowed and ported for $1200. The turn around on the heads were promised in two weeks, they were at my door step in two weeks! I never received this type of service and price before.

Flow numbers

@500 292 in 245 ex
@550 305 in 252 ex
@600 310 in 257 ex

 

[S2V6RACER]

Removed the heads from the $250 4.8 junk yard mock up motor and sent them off to Total Engine Airflow in Tallmadge Ohio aka Trick Flow Heads for a CNC job.
New and larger intake valves 5.7l 2.00 , guides, competition valve job, new springs, valve seals, milled to 62cc, flowed and ported for $1200. The turn around on the heads was promised in two weeks, they were at my door step in two weeks! I never received this type of service and price before.

Flow numbers

@500 292 in 245 ex
@550 305 in 252 ex
@600 310 in 257 ex

View attachment 145860View attachment 145861View attachment 145862View attachment 145863View attachment 145864

Nice flow numbers for a cheap $1200 port job. Gotta love it. Service, value and the customers budget in mind. Who would have ever thought this was possible.


Just sayin......

 

[HOT ROD-GN]

Removed the heads from the $250 4.8 junk yard mock up motor and sent them off to Total Engine Airflow in Tallmadge Ohio aka Trick Flow Heads for a CNC job.
New and larger intake valves 5.7l 2.00 , guides, competition valve job, new springs, valve seals, milled to 62cc, flowed and ported for $1200. The turn around on the heads were promised in two weeks, they were at my door step in two weeks! I never received this type of service and price before.

Flow numbers

@500 292 in 245 ex
@550 305 in 252 ex
@600 310 in 257 ex

View attachment 145860View attachment 145861View attachment 145862View attachment 145863View attachment 145864

WOW!!! that some Bad A$$ numbers!! Is this motor going on your GN?

 

[8 SEC 109]

WOW!!! that some Bad A$$ numbers!! Is this motor going on your GN?

We are going see how far we can push the stock bottom end 4.8 truck motor. This motor is going in the GN as a mock up for the Kurt Urban power plant.

 

[8 SEC 109]

Nice flow numbers for a cheap $1200 port job. Gotta love it. Service, value and the customers budget in mind. Who would have ever thought this was possible.


Just sayin......

I was surprised to see a flow sheet, spec sheet and a final bill enclosed with the heads.

 

[John Wilde]

Good numbers and at low lift.
You can make big power with a small hr cam.

 

[Mike Licht]

WOW! those look nice, great numbers too. Sure looks like they did less stuff to the heads that are on the other LS motor and these were a much better price.
Mike

 

[John Wilde]

Guys, lets try to just enjoy our new toys with out very thinly veiled vendor bashing...

 

[HOT ROD-GN]

We are going see how far we can push the stock bottom end 4.8 truck motor. This motor is going in the GN as a mock up for the Kurt Urban power plant.

Cool !! Go luck on your new built..
I went the same rout..

 

[Boostdeznuts]

Is this gonna be a turbo LSX motor?

 

[SGRIM]

Yeah I am going to throw the monkey wrench in here... Please stop with the inside shots at the old builder... We don't need anymore division in this community. Even though he isn't a vendor here I don't want to see anyone get bad mouthed... Trickflow hasn't done chit for the buick community so....

We have been down this road with other vendors before... Lets NOT do it again...

 

[BandAid]

bet this is faster service and cheaper....

LS6 cylinder head, CNC Ported Stage II -- Katech Performance Online Store

 

[8 SEC 109]

bet this is faster service and cheaper....

LS6 cylinder head, CNC Ported Stage II -- Katech Performance Online Store

Katech has great products but those heads are not complete with valves, springs,etc.

 

[8 SEC 109]

Is this gonna be a turbo LSX motor?

Yes, twin turbo running on e85. Mike at Full Throttle has the cam and turbos speced out. We are looking for 800 rwhp with a mild tune up.

 

[tsm3089]

http://www.stockshortblockshootout.com/

 

[quickt]

http://www.stockshortblockshootout.com/[/QUOTE] I see no stock Ford or BBC stuff allowed.

 

[GNVYUS 1]

Curious, what headgaskets are you going to run for your FI LS?

Are you fabbing the headers or is there a kit?

This route is looking better to me every time I come back on the board so sorry for all the questions.

 

[BandAid]

LS9 mls gaskets are the way to go

 

[8 SEC 109]

I am running a cometic .051 mls head gasket
Part number CGT-C5475-051

We are going to use the stock truck headers facing forward, flanges cut off v bands welded on.

I will start a new thread in the next few days about the 4.8 build up. The parts are starting to arrive at Full Throttle.

 

[streetknight]

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