AFR's and Big Cubes
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From: MI
AFR's and Big Cubes Will the new AFR heads produce substantial gains on a big cube motor (422/427) over a well ported LS6? All I have seen is talk about stock displacement, heads and cam motors.
Also, Can the higher flowing of the two heads offered be ported as well?
I know the AFR's for the LT1 can be ported further for more performance but I wondered if this was not relevant to the LS1 heads. 
Also, Can the higher flowing of the two heads offered be ported as well?
I know the AFR's for the LT1 can be ported further for more performance but I wondered if this was not relevant to the LS1 heads. 
TECH Resident
Joined: Sep 2003
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From: Working in the shop 24/7
Originally Posted by Mike 01WS6
Will the new AFR heads produce substantial gains on a big cube motor (422/427), all I have seen is talk about stock displacement heads n cam motors.
Also, Can the higher flowing of the two heads offered be ported as well? I know the AFR's for the LT1 can be ported further for more performance but I wondered if this was not relevant to the LS1 heads.
Also, Can the higher flowing of the two heads offered be ported as well?
I know the AFR's for the LT1 can be ported further for more performance but I wondered if this was not relevant to the LS1 heads. Hi Mike,
I'm sure a few "tweaks" can be done to the LS 205 cc heads to get them to perform well on larger than stock engines. Give it some time for us to play with these pieces before any good or bad press is written on them.
For a bolt-on application, the larger LS 225 heads should have plenty of port volume to work (and matching cfm) to feed the bigger engines. A good camshaft design coupled with the new Comp intake should net some big HP and torque.
When my shipment of LS heads comes in, I'll do some testing and see what happens to them when a different valve is used as well as results when changing the valve job. Tony M at AFR will be the first to know but after some arm twisting, I'll get him to release any of my findings.
Like any new cylinder head design, it will take some time and a few heads will be sacrificed during the research phase!
Ed
Originally Posted by EDC
Hi Mike,
I'm sure a few "tweaks" can be done to the LS 205 cc heads to get them to perform well on larger than stock engines. Give it some time for us to play with these pieces before any good or bad press is written on them.
For a bolt-on application, the larger LS 225 heads should have plenty of port volume to work (and matching cfm) to feed the bigger engines. A good camshaft design coupled with the new Comp intake should net some big HP and torque.
When my shipment of LS heads comes in, I'll do some testing and see what happens to them when a different valve is used as well as results when changing the valve job. Tony M at AFR will be the first to know but after some arm twisting, I'll get him to release any of my findings.
Like any new cylinder head design, it will take some time and a few heads will be sacrificed during the research phase!
Ed
Good lord, Ed... I didnt know you worked with LS1s... I am planning on giving you a call about building a 5-liter for my little notch, and then I see you here talking about LSx heads...
You have good taste in engines
chris
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Joined: Sep 2003
Posts: 848
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From: Working in the shop 24/7
Originally Posted by Visceral
Good lord, Ed... I didnt know you worked with LS1s... I am planning on giving you a call about building a 5-liter for my little notch, and then I see you here talking about LSx heads...
You have good taste in engines
chris
You have good taste in engines
chris
Hey Chris,
I'm still with the FoMoCo guys so don't fret if you need thing for the "other" toy.
It's no surprise you've not heard from me directly on these LSx combinations. I pretty much kept it that way to quietly keep my "paying customers" ahead of their competition.
I've been selling a ton of custom designed roller camshafts and "race only" parts to a few shops and select customers, that specialize in the LT1 and LSx market. With the success that we've seen over the last few years, I decided to get out of their shadow and move into the front row with both race and street combinations that just flat out work! It's just like we have done for the 5.0 market. By sometime next month, we will be evaluating and testing the new AFR 205 heads as well as the Comp LSX composite intake. These manufacturers are looking for honest and accurate data on their new pieces and they do know where to come for that!
Stay tuned because I'll also be sharing some comparision data on all the AFR LSx heads vs some ported OE ones. All testing will be done with both the 4.125 and 3.910 bore fixtures and done "at the same time" with the "industry standard" SuperFlow 600 flow bench. This way no data can be skewed or exagerrated.
I'll get the data to the boards as soon as all tests are completed...
Ed
On The Tree
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From: CHICAGO IL.
Stay tuned because I'll also be sharing some comparision data on all the AFR LSx heads vs some ported OE ones. All testing will be done with both the 4.125 and 3.910 bore fixtures and done "at the same time" with the "industry standard" SuperFlow 600 flow bench. This way no data can be skewed or exagerrated.
I'll get the data to the boards as soon as all tests are completed...
Ed[/color][/QUOTE]
Sounds Good !
I'll get the data to the boards as soon as all tests are completed...
Ed[/color][/QUOTE]
Sounds Good !
Originally Posted by EDC
Hi Mike,
I'm sure a few "tweaks" can be done to the LS 205 cc heads to get them to perform well on larger than stock engines. Give it some time for us to play with these pieces before any good or bad press is written on them.
For a bolt-on application, the larger LS 225 heads should have plenty of port volume to work (and matching cfm) to feed the bigger engines. A good camshaft design coupled with the new Comp intake should net some big HP and torque.
When my shipment of LS heads comes in, I'll do some testing and see what happens to them when a different valve is used as well as results when changing the valve job. Tony M at AFR will be the first to know but after some arm twisting, I'll get him to release any of my findings.
Like any new cylinder head design, it will take some time and a few heads will be sacrificed during the research phase!
Ed
Pardon the question but I see FlowTech in your sig. Vince a board member had a set of FlowTech heads that were truely horrible. The flow numbers were impressive and the power gain was not. In fact when the FlowTechs were pulled Vince got excellent gains after TEA reworked the FlowTechs to an actual Stage I status. Would this be the same FlowTech by chance?
Hey, Vince if you see this - no offense intended mentioning your old set up.
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Originally Posted by 99 Black Bird T/A
Ed,
Pardon the question but I see FlowTech in your sig. Vince a board member had a set of FlowTech heads that were truely horrible. The flow numbers were impressive and the power gain was not. In fact when the FlowTechs were pulled Vince got excellent gains after TEA reworked the FlowTechs to an actual Stage I status. Would this be the same FlowTech by chance?
Hey, Vince if you see this - no offense intended mentioning your old set up.
Pardon the question but I see FlowTech in your sig. Vince a board member had a set of FlowTech heads that were truely horrible. The flow numbers were impressive and the power gain was not. In fact when the FlowTechs were pulled Vince got excellent gains after TEA reworked the FlowTechs to an actual Stage I status. Would this be the same FlowTech by chance?
Hey, Vince if you see this - no offense intended mentioning your old set up.
Glad to see you on the board Ed. Looking foward to seeing your test results. TECH Resident
Joined: Sep 2003
Posts: 848
Likes: 1
From: Working in the shop 24/7
Originally Posted by 99 Black Bird T/A
Ed,
Pardon the question but I see FlowTech in your sig. Vince a board member had a set of FlowTech heads that were truely horrible. The flow numbers were impressive and the power gain was not. In fact when the FlowTechs were pulled Vince got excellent gains after TEA reworked the FlowTechs to an actual Stage I status. Would this be the same FlowTech by chance?
Hey, Vince if you see this - no offense intended mentioning your old set up.
Pardon the question but I see FlowTech in your sig. Vince a board member had a set of FlowTech heads that were truely horrible. The flow numbers were impressive and the power gain was not. In fact when the FlowTechs were pulled Vince got excellent gains after TEA reworked the FlowTechs to an actual Stage I status. Would this be the same FlowTech by chance?
Hey, Vince if you see this - no offense intended mentioning your old set up.
Blackbird,
I don't know of any LS heads for a customer named "Vince" but I'm sure he can tell you exactly who he received his heads from... Damned sure I didn't do them...
FWIW... you don't want to get me and Brian into a pissing match... Then the forum may end up like some "stang site"....
Hey Beast96Z... ready to step up to another grind? I've got the data so when ever you're ready!
Ed
