Is it possible to make a better cylinder head then 1g or 2g Cylinder head

[CPHunter]

I Don't know if this is the place to talk about this. If not please move, but I've been wondering after looking at the selection of Cylinder heads V8 guys get.... Is there anything any company can do to make a 4g63 cylinder head better. Maybe like a 1g port size, 2g runner hybrid. Or just change the way air flows into the chamber...... Just something I've thought of. Anybody?

I know its never gonna happen. But would be cool know.

 

[Colt4G63 also]

Yes! Some crazy people in Greece made a billet cylinder head and block for their 14billion HP EVO. The price was more than the cost of a new EVO if I remember correctly.

Edit: Oh, I guess someone made the block for them, and I'm not sure they used an aftermarket head.

http://www.bulletcylinderheads.com.au/billethead.php

 

[CPHunter]

Yeah I read about that motor. But besides that it can handle more power. What was better about the cylinder head? Wasn't it a recast of OEM but out of a solid piece of aluminum?

 

[Colt4G63 also]

I don't know. I can't find the thread, but I thought I remember them claiming to make 1700 BHP.

 

[400hp93talon]

Whats wrong with just having the head port and polished with oversized valves that makes them a million times better!!..... Unless you just had a crazy random awesome idea of an actual aftermarket cast of a head or something.

 

[Absit]

The reason domestics have so many head options is because their heads from the factory were antiquated garbage. Ours are not, thus there's no market for aftermarket heads.

 

[Bud92gsx]

having you head race ported would be cheaper than all the R&D that goes into making a new head from scratch..

 

[CPHunter]

All I'm asking is if their is anything that could be done to make a our cylinderhead better. I don't care if they build one or not. Its just a discussion.

 

[91stocker]

Yes! Some crazy people in Greece made a billet cylinder head and block for their 14billion HP EVO. The price was more than the cost of a new EVO if I remember correctly.

Edit: Oh, I guess someone made the block for them, and I'm not sure they used an aftermarket head.

Welcome to Bullet Cylinder Heads - chev big block

Wow thats a piece of art.

 

[Bud92gsx]

Yes there are alot of thing that can be done to make our head better..Oversized valves, and porting, will make a huge difference..

 

[dsm-onster]

All I'm asking is if their is anything that could be done to make a our cylinderhead better. I don't care if they build one or not. Its just a discussion.

Well you really DID title the thread: "Is it possible to make a better cylinder head then 1g or 2g Cylinder head". . .

With that said, there's so much that can be done to this lotus style head that it would be a farce to try to start from scratch. We havn't even delved into this head enough.

 

[defrag010]

With that said, there's so much that can be done to this lotus style head that it would be a farce to try to start from scratch. We havn't even delved into this head enough.

I'm curious how you came to this conclusion. Lots of R&D with 4g63 induction systems? Lots of time on the flowbench?

I ask this because I disagree. There isn't much room for significant improvement to stock intake ports as they are already great out of the box for the application we all use them for. 1G's have the excessive cross section that is a benefit with forced induction, the roof is biased (You can tell when your porter isn't familiar with port dynamics when he takes the bias out of the roof), and the choke point over the short turn is appropriately sized. Velocity distribution of stock ports is surprisingly good also (When have you seen anyone map the velocity in a 4g63 intake port?). Sure, people see gains from trick valve jobs and larger valves, but the cost/benefit isn't there for serious intake port R&D. I'm talking tangible evidence, not anecdotal like "I put the stage 78 head with intake ports so big I can stick my fist in them on and I ran 2mph faster at the same boost", or "so and so runs the stage 5 head and they are trapping 138".

Think of the head as only a segment of the whole induction system. Total port volume and cross section is where the magic happens. If this wasn't the case, then sheet metal intakes and other induction mods would do no good. With that being said, a properly designed induction system on a stock head is more than 95% of the people on this forum ever need.

 

[dsm-onster]

"We havn't delved into this head's current potential enough as is" would be a better way for me to have said what I meant. I believe there's much more power potential than most are willing to accept with the head as it is.

Cleaning up the casting and addressing the bowls have given much tangible increases. 8ish % increase in cfm. And that's a significant increase to me. Over-sizing the valves is for those who have enough velocity to merrit it. And those looking at a completely different aftermarket head, probably merrit it. So that can be done instead of scrapping it entirely. Applying the other tricks has a better cost/benefit than a completely fresh head design.

But I conceed the stock head out of the box is more than superb for more than 95% of the users here. I'm saying it still has quite a bit of significant modifications that can be applied when you get to the point where you're seeing the head choke you a bit. Which such point is exceedingly high.