jmgak47

iTrader: (3)

If your wanting to go with cathedral heads and on a budget look no further then the TFS 245cc

Stock LS7 heads are also a good budget option but personally unless I was going with some custom LS7 style head I would stick with the TFS 245cc.

Now if you wanna take it a step further then All Pro, Mast and Brodix all make a great LS7 head that can make all the power you could want. Thing is you start getting into bigger things/options such as shaft mount rockers and titanium valves.

Have a set of Brodix BR7 heads for my all out N/A 454 LSX build. Really wanted All Pros but they were back ordered and didn't want to wait. Then ordered a Holley Hi-Ram only to find out they to were back ordered...

02sslayer

iTrader: (4)

i was

i was talking with tony mamo a while back about building my motor. things got hectic and i gave up on building motors. now im back into it but going about it differently. im thinking of sending tony a pm and having him spec my build and port my intake and what not. but i just may go with the mamofied AFR 245s.

KILLERARMY

Check this thread out.

https://ls1tech.com/forums/generatio...s-install.html

WCCH have 2 version of All Pro Heads.

12-1 (Which is design for your ride on the street.)
12-2 (Are only for serious drag racing purpose.)

ws602

iTrader: (2)

I would call Richard at WCCH he would steer you in the right direction. It looks to me that the ALLPRO LS7 head will work for your set up. Spend the money one time and be happy ,and if you ever decide to got to a six bolt based block you have the heads already .

02sslayer

iTrader: (4)

gonna give him a call tomorrow. i have it down to 2 choices
#1 allpro
#2 AFR245

Detoxx03

iTrader: (14)

If its out of All Pro and Trick Flow All Pro gets my vote

02sslayer

iTrader: (4)

it was out of AirFlow research and AllPro. Now that you mention it i forgot to put trickflow in the mix.

i was reading a thread simular to mine and from what i read the trickflow 235s were better than the 245s for a large CI motor for some reason. this is a tough choice, all 3 are awesome heads. i want as much power and TQ as this thing can make but dont want an all out race car either. it needs to be able to cruise around on a nice saturday night...i think im straying off topic a little bit im tired

02sslayer

iTrader: (4)

if i did not mention it allready 600-620 RWHP is my goal with this motor

ws602

iTrader: (2)

My little low compression turbo engine made that and more with the allpro heads.
Lsx 427
Allpro-1
Little solid lift cam

02sslayer

iTrader: (4)

i think i have decided on mamofied AFR 245s

6D9 Matt

Cant go wrong with Mamo. Post up after you get it all together!

Sales@Tick

iTrader: (3)

I would go with TEA Trick Flow 265's all day long. For your set-up, you need a larger port volume and cross sectional area than a 235 or 245 can give you. I don't think you need 305cc of intake runner though. I feel like 265-275cc would be ideal in this application and that the 265cc head will produce the strongest power curve.

The cam that will be used will also play a huge part in the power output and power curve. A traditional mind set with an engine this large where single pattern cams and small splits are the norm will not create that very nice long flat torque curve and give you peak power like you'd expect a large cylinder head large cubic inch application to give you.

Is this a 4.20" bore 4.00" stroke engine or is it square/under-square? No one has even asked that question yet, as the size of the bore and stroke will play a HUGE factor in what size cylinder head and intake valve needs to be used on an engine of this size.

What header primary size and collector size you will be using will also play a part in how large the exhaust port needs to be. Scavenging a big motor is critical and exhaust port size and primary/collector size and design also will determine the cylinder head selected and valve events of the camshaft.

http://www.totalengineairflow.com/pr...ylinder-heads/

badassracing

iTrader: (13)

Have you checked out the RHS PRO ELITE LS7 Heads. These actually sound pretty like some nice heads.
http://www.yellowbullet.com/forum/sh...d.php?t=534308
http://www.yellowbullet.com/forum/sh...d.php?t=451661

02sslayer

iTrader: (4)

man there are alot of good choices out there....

JakeFusion

iTrader: (7)

Ported LS7s would be right with Ti valves. Then you can run either the LS7 or FAST LS7 intake and make stupid power.

I usually say go Cathedral port over LS3 all day long, and on a 427 cathedral port is fine. But 441 or 454 or bigger, just do the LS7.

kickassT/A

iTrader: (3)

i'm having a set done by a shop in dallas that flow around 430 in solid roller trim

kickassT/A

iTrader: (3)

^didn't click on the links before but that is the shop and how i found them, lol

Baconz28

If the motor was mine I wouldn't pick the cylinder heads myself. I would let my engine builder match the whole engine together. I would talk to someone like hke or a engine builder that does great big cube builds all the time.

02sslayer

iTrader: (4)

tony mamo is specing out my top end we both agreed on AFR 245s, ive seen what he can do with some of his other builds and ive seen some very nice results..

Jason 98 TA

iTrader: (4)

Did you checkout the LS7 cylinder head shootout on hot rod magazine? The PRC 285cc heads were the only LS7 heads to move 400cfm. We've made well over 700hp with those heads on a similar combo.