FormulaTA327

yea cant forget about all that little ****, i was just adding in all the parts i knew i would use for either of the heads, im just glad my tuner is just down the street from me. I just need to find a head to head comparison on the 243s worked and the tfs220s and then maybe that will make my mind up

FLYNAVY30

iTrader: (1)

PM sent....just installed Livernois STG 3 243 heads....below is a list of everything I installed with the heads:

STG 3 243 heads (milled .012 just to ensure heads were true - app. 63cc chambers)
GM MLS head gaskets
ARP head bolts
LS7 lifters
GM lifter trays
7.375 push rods
comp trunion upgrade
FAST 36 lb injectors

adamantium

iTrader: (3)

Just looked around a bit further, apparently if you shim the stock rockers and use the PM guides it will work but it is not recommended by TEA or TFS. It will void the warranty from TFS aswell. The TFS 220 as cast seem like a great buy IMO, i also considered them. Your goals are very low, OEM cast should be more than enough. If i were you id pick up the phone and have a chat with TEA, or AI, or even texas speed which ever company you are considering and ask questions. Im sure TEA has dealt with enough TFS heads that they are qualified to tell you what is recommended and not and how it will do against an OEM cast setup.

FormulaTA327

i think i finaly decided to go with TEA stage 2 243s, from what people say they make around the same hp. would i need to upgrade my injectors for the cam and head swap

FLYNAVY30

iTrader: (1)

yes, but nothing crazy...I went with the FAST 36 lb injectors...those or the 42 lb would be more than enough

spicebird98

iTrader: (10)

why not mil your heads some and run a .40 gasket? even a valve job would cost next to nothing. High compression with a mild cam would get you over 400rwhp even with unported heads through an auto. 11.2-11.5 CR would work well

96capricemgr

iTrader: (1)

https://ls1tech.com/forums/dynamomet...-gm-5-3-a.html

Just something I like to throw out when folks talk about how aftermarket heads are automatically superior.

When shopping for parts look for results with reviews and look for cars that run "better than they should" meaning if 2 cars run the same ET but one has an extra $1000 in heads and is 150lbs lighter then which setup would you want to copy?

TurboMonte100

iTrader: (1)

This goes right along with my first post on this subject.

TXZ28LS1

iTrader: (5)

Good choice man!! Those would be the 243 i would run myself.

adamantium

iTrader: (3)

Yes you would, BUT if your on a tight budget theres a great alternative that i don't see talked about to much.

Look under the Grand Prix GTP 36# Injectors at our base fuel pressure they are 40lb injectors+. They can be had on ebay for less than $150 for a set of 8. Ive seen people find them for $76-80 for 8.

Check out this thread.


https://ls1tech.com/forums/fueling-i...injectors.html


Or you can have your stock injectors Resized for $200 or so as stated by a sponsor in that thread.

FormulaTA327

ok another thing i have been reading is flycutting, i dont want to have to flycut. the TEA stage 2s have slightly bigger valves than the AI 232cc heads and i plan to mill the heads but not sure how much to mill them. seems i will have a limited choice in the cam options, how can i get away with not flycutting

96capricemgr

iTrader: (1)

IMO for most builds "larger valves" is a sales tool used by the head vendor. If you keep an open mind some serious numbers get put down with "just stock valves".

dirtbag

iTrader: (2)

Tea installed the PM guides on my 220cc heads.... Doubt it voids any warranty. Where did you get that information? Or is this just hear say?

adamantium

iTrader: (3)

I agree. Extra $200 for a couple of CFM. Ive seen plenty of stock valved AI heads do excelent.


Have who ever your getting a cam spec'd from spec out a cam that won't have any P2V issues. IMO, id check regradless before buttoning everything up.

The PM guides iteself don't void warranty, the use of OEM rockers do. Not sure how they can figure out if you used OEM rockers or not, but heres what i saw in another thread.

FormulaTA327

what gains would i have if i did get the heads with bigger valves, if its not a big gain and only like 5 hp then i would just go with the AI ones that way i have a less chance of flycutting and getting a little bit bigger cam

mac62989

iTrader: (1)

I couldnt see any circumstance were stock valves will be holding you back.. Talk to Phil at AI, he'll explain it in detail.

Tainted

iTrader: (9)

Really? Not even on big cube engines and the such? Stock valve size will suffice to a point...

mac62989

iTrader: (1)

I meant on the OPs application..

FormulaTA327

what cam bolts would be recommended and how much should i get the heads milled down to so i dont have to flycut and it looks like im going with the AI 232cc heads for sure, i think they would be my best option.

adamantium

iTrader: (3)

I think you should have a talk with AI for the milling question, he's already doing the heads for you.