1BadDime

iTrader: (26)

I am currently building a stroked LS1, 3.900" bore. I am looking for options on cyllinder heads and want the experts advice here. Patriot seems to be a popular choice, but what other choices do I have? Keep in mind I want a stricktly drag race engine here, built for nitrous and want to know my options.

Thanks in advance,
Jim

Firehawk441

iTrader: (41)

Right now you have countless possibillities as appossed to a year ago.

eamador11

why dont you call up AFR, patriot and ETP? Im sure they can answer all your questions and give you advice.

Gunnar@Patriot

iTrader: (20)

When you geat a chance, give us a call here or send us an email and we will make a suggestion for your particular set up. We offer some great products at very good prices.

Tony Shepherd

iTrader: (4)

Also give Harold at PortPros a call. He can help you out.

www.portpros.com

Jason 98 TA

iTrader: (4)

We just finished up a new port for the Dart heads. I should be shipping the first few sets of them this week! Here's some of the flow data

Intake Valve: 2.08" Exhaust Valve: 1.600"

Valve Lift Intake
.100" 73
.200" 154
.300" 212
.400" 262
.500" 303
.600" 330



http://www.texas-speed.com/shop/item...d=627&catid=40

1BadDime

iTrader: (26)

Thanks so far for all the replies. I have done a bunch more reading since I have posted this up and I am noticing that a lot of the flow data that is shown for most of the popular heads are for a 4.000 bore size or up, and show no data for a 3.900" bore size. Does anyone show the data for this size??

Thanks,
Jim

JZ'sTA

iTrader: (23)

A 4" bore and a 3.9 bore wont change flow numbers by a ton.
Here is my suggestion.
Set your goals and your budget.
There are a ton of quality head companies on this board and you can spend from 850-3850+ for a set of heads.
The best thing to do is research as you have been doing.
Read peoples oponions that have used the different head companies.
Your goals and your budget need to be set and after that it will be much easier to make a solid suggestion.

1BadDime

iTrader: (26)

Goals = 450 - 500 RWHP
Price range = Doesn't matter, I want to buy heads once, quality is the important thing.

I am also looking to spray 200HP down this motor, and am probably going to see max RPM's in the 6800 range.

To me the cost isn't the important thing.... getting a quality piece with real potential for putting down some real world numbers at the track is what's important to me.

Dart is looking good, AFR has always been one of my top choices as well. But getting the opinions from everyone on this site and help from our sponsoring vendors is priceless!

Thanks,
Jim

JZ'sTA

iTrader: (23)

If money isn't a huge issue, then ETP heads all the way.
They have done some nice things to distance themselves for other cylinder head companies.
I am sure a few other companies will close the gap soon but for a while AFR was number 1, now it seems they are a close number 2.
AFR nuts please dont take that the wrong way just stating my oponion based on my personal experiences with both head companies, and other people's experience with ETP heads.

On a side note I think PP dosen't offer you anything. They DO NOT compete with the elite head companies when it comes to making consistant power.
In fact it will be tough for any GM casting ported head to match the ETP head or AFR head for that matter.
Dart has a nice product but again in my oponion they are in the same book at ETP/AFR but not quite in the same chapter.

383ss

iTrader: (14)

any results with the 2.10 valve 4.30 bore yet?

Tony Shepherd

iTrader: (4)

If your talking about Port Pros he is not only limited to cast heads! He is also an AFR vendor and works the AFR bare casting heads into a work of art that can out flow the competition. He is in the Elite category. I have used many of the "elite" companies heads and Port Pros takes the cake in consistency. Have you even tried out a set of their heads? How can you make an asumption?

PortPros1

Check out our web-site www.PortPros.com We do custom head porting one set at a time. We don't throw the same heads at every combination, we have many valve jobs and porting options depending on your application. We only use the very best race proven components.
We also design cams to match our heads, we flow every head we port and supply you with the before and after flow sheets.

I understand that I won't get everyone's business. But I race myself and have spent a lot of money on my own cars. We are one of the best cylinder head-engine companies on this board. But there are others, if you decide not to go we us I'll give you my opinion of which companies are worth the money they charge.

The advice is free, I'd be happy to help.
512-257-0222 ask for Harold

Ed Curtis

What he said...

Ed

STRIPSTAR

iTrader: (4)

Wow, Can you PM me a bare price for those? I already have prc duals in hand. Thanks

Bring the Noise

ETP and RHS have 11 degree heads (okay RHS will not have them for 2 to 3 weeks but they are a com'n).

Went over to CompCam's this morning and saw the RHS 225 (2.08" intake / 1.60" exhaust)

Pretty little peach... ya ever get the desire to just do a ******-n-grab... and it was only bare...

Oh and talking to John Williams from RHS the heads are cast's from ETP but are slightly different.

When they become available the 225's are going to retail direct from RHS at $1190 or so bare... That head looked like it could easily take 14:1 Meth and some NOS ... I don't think I'll be going that far but I want em so bad it's making my Goat hurt! As in I'll probably blow the valve train in my 05 GTO as an excuse

Oh Yeah

I even offered up the Goat as a gunie pig for the testing of the new heads. But John said they were going to have a third party company do the testing and evaluations Dangnabit I tried to get a discount and get a pair before anyone else, can't blame me for try'n

STRIPSTAR

iTrader: (4)

That sounds good.

Bring the Noise

lol... you're to quick on the reply's... well this grave shift guy is head'n for bed.

And yeah I'm the same Bring the Noise from the ls1gto forums... been using the nick BtN since around 98 (mainly online gaming). just stuck with it... now I need a car that does the same and the GTO will be that car!

STRIPSTAR

iTrader: (4)

1190 a pair? Do you know the chamber sizes?

Ed Curtis

Price is "EACH"... and they are ETP heads sold by RHS.

Ed