Heads for Vortech
Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 79
Likes: 0
From: Calgary, Alberta
Heads for Vortech I'll start with some background. Setup is as follows:
Vortech G-trim kit with aftercooler
Hooker LT and cat-back.
Engine is stock.
Right now with a really good tune I'm running about 490rwhp. A couple weeks back I think I may have bent a pushrod. Car is a little "flat" up top. So I'm thinking about making some upgrades to the pushrods, springs, rockers etc. However before I do all that, I'm wondering if it is easier/more cost effective to jump straight to new heads with all the goodies built right in.
My goals are 550 to 600 rwhp. I'm sure I'll never be satisfied, but that is the ultimate goal. I'm just wondering if it makes sense to upgrade the valvetrain on the existing stock heads or if it is worth just ditching the stock ones and upgrading all at once.
Of course there are piles of other questions too. Will the G-trim support that power? Will the fuel system support that power? Should the intake we upgraded? How about the bottom end? All these questions...
Vortech G-trim kit with aftercooler
Hooker LT and cat-back.
Engine is stock.
Right now with a really good tune I'm running about 490rwhp. A couple weeks back I think I may have bent a pushrod. Car is a little "flat" up top. So I'm thinking about making some upgrades to the pushrods, springs, rockers etc. However before I do all that, I'm wondering if it is easier/more cost effective to jump straight to new heads with all the goodies built right in.
My goals are 550 to 600 rwhp. I'm sure I'll never be satisfied, but that is the ultimate goal. I'm just wondering if it makes sense to upgrade the valvetrain on the existing stock heads or if it is worth just ditching the stock ones and upgrading all at once.
Of course there are piles of other questions too. Will the G-trim support that power? Will the fuel system support that power? Should the intake we upgraded? How about the bottom end? All these questions...
get some comp 921's and rev it to 65-6700 or whatever.
AFR 225's
Have money for a built bottom end on standby just in case something happens.
I'm doing a forged bottom now with a cam and looking to hit 550-570 on stock heads with just valvesprings and cm pushrods. My limitation is my fuel system... ahh it never ends.
should be done in a month, can't wait!
AFR 225's
Have money for a built bottom end on standby just in case something happens.
I'm doing a forged bottom now with a cam and looking to hit 550-570 on stock heads with just valvesprings and cm pushrods. My limitation is my fuel system... ahh it never ends.
should be done in a month, can't wait!
Originally Posted by JohnnieMo
bump..
As a second thought. What kind of gains could be had by upgrading the existing heads with new pushrods, rockers and springs? How many more revs would this allow?
As a second thought. What kind of gains could be had by upgrading the existing heads with new pushrods, rockers and springs? How many more revs would this allow?
Which by Monday I will make my decsion on rather or not to go with the dual racetronix pumps with 2 hots or the dual walbro 255's. Stage 2 5.7L Heads
Fully CNC'd
Hand Finished
Polished Combustion Chambers
Bronze Guides
Hi-Chrome Valve Seats
Custom 2.055 Intake Valves
Custom 1.60 Exhaust Valves
Dual LS1 Gold Series Springs (good to .650 lift)
Titanium Retainers
Super 7 Locks
Hardened Spring Seats
Viton Valve Seals
Competition 5 Angle Valve Job
Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 79
Likes: 0
From: Calgary, Alberta
Thanks for the replies guys.
Thankfully I got my problem diagnosed and it was a blown fuse in my auxiliary fuel pump. Hence losing power on the top end. Fortuantely the car is smart enough to pull timing and prevent any damage. And I guess the pushrods are fine.
I still plan on upgrading, but it might be down a road a ways. Thanks for the input.
Thankfully I got my problem diagnosed and it was a blown fuse in my auxiliary fuel pump. Hence losing power on the top end. Fortuantely the car is smart enough to pull timing and prevent any damage. And I guess the pushrods are fine.
I still plan on upgrading, but it might be down a road a ways. Thanks for the input.
I still have stock 6.0 heads for sale. They are located in houston at HPE's shop. Erik can set them up with any spring you want but they do come complete. These will lower your CR and should flow better than stock heads. PM me if interested.
Greg
Greg
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Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 79
Likes: 0
From: Calgary, Alberta
Just gonna bump this up again.
I'm looking at new options for the winter again. I want to upgrade the valvetrain as a minimum for safety reasons, but I'm wondering what is the best approach. New heads or simply new valve train on the existing heads?
Lots are suggesting the AFR 225's.... and they look good to me. I'd like to hear about any blower cars using these heads. How is torque respond? Is it necessary to pulley the blower to get enough air at the bottom end? What sort of cam would go with this combo?
As for fuel system - are upgrades required in addition to the T-rex pump from the Vortech kit? How about injectors?
Lots of things to ponder here. Thanks.
Lastly - anyone have any numbers from a similar combo?
I'm looking at new options for the winter again. I want to upgrade the valvetrain as a minimum for safety reasons, but I'm wondering what is the best approach. New heads or simply new valve train on the existing heads?
Lots are suggesting the AFR 225's.... and they look good to me. I'd like to hear about any blower cars using these heads. How is torque respond? Is it necessary to pulley the blower to get enough air at the bottom end? What sort of cam would go with this combo?
As for fuel system - are upgrades required in addition to the T-rex pump from the Vortech kit? How about injectors?
Lots of things to ponder here. Thanks.
Lastly - anyone have any numbers from a similar combo?
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Verdad Gallardo you'll have to pulley down to make the same boost cause the heads make the engine more efficient. A great cam with stock cubes is the 224/230 cam.
Fuel system you'll probably have to upgrade injectors and go with a better fuel pump like a walbro or racetronix and maybe add a boost a pump.
that's all you need.
heads/cam vortech cars make power from mid 5's to low 600 on the G trim. the T trim head/cam cars make power into the 700's. The Ys and YSi make power into the 800's and above.
Fuel system you'll probably have to upgrade injectors and go with a better fuel pump like a walbro or racetronix and maybe add a boost a pump.
that's all you need.
heads/cam vortech cars make power from mid 5's to low 600 on the G trim. the T trim head/cam cars make power into the 700's. The Ys and YSi make power into the 800's and above.
Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 79
Likes: 0
From: Calgary, Alberta
I don't think I *have* to have the same level of boost, but it would be nice. I don't have any reservations about running the blower harder though. I don't drive my car very hard at all on the street. (its actually quite lame) But I beat the hell out of it on the strip. (only about 20 passes per year though)
How does the stock bottom end hold up to 600rwhp? Obviously a blower'd 600 is better than something more crazy like a turbo.
How does the stock bottom end hold up to 600rwhp? Obviously a blower'd 600 is better than something more crazy like a turbo.
Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 79
Likes: 0
From: Calgary, Alberta
Originally Posted by Pro Stock John
I'd upgrade from stock valvesprings for sure.
I think you would see a bigger gain from a cam than you will from a head swap.
I think you would see a bigger gain from a cam than you will from a head swap.
What sort of HP increase are we talking if I just do valvletrain and cam?