teke184

iTrader: (5)

anybody spot these in the new Summit catalog?

they list them for the 4.8/5.3/5.7L engines, max bore of 3.890 or something like that.

would be sweet to have that on a ls1 street motor....should make really good low and mid range.
price isn't bad either....$1900 i think


then again summit has had the Bigfoot Intake...sorry the Street Warrior...for sale for months...and it still hasn't seen the light of day.

9secondsflat

they probably are the "as cast" version....personally i dont see a reason to use a 205 on a 346 when the 215's are perfect...you can control the power range from the cam one uses..

teke184

iTrader: (5)

its just something to look into.

while i agree the 215s are great, you might get a bit more power down low if you did the smaller runner.
perticularly with a smaller cam.

LilJayV10

iTrader: (39)

subscribing

QuickSilver

iTrader: (22)

They are not as cast they are a full CNC port.
I will be having a set of these along with the TFS stg 4 cam in about a month.
Looking to just make a good street driver.

EarlSS

I wonder how they will compare to the AFR 205's.

litle88

iTrader: (20)

I have the as cast version from Vengeance for 1600.00 with the mods in my SIG and am very impressed!
AFR205's for over 2000.00 will be passed up by me!

Here is food for thought.... https://ls1tech.com/forums/dynamomet...-castings.html

allthrotle

iTrader: (2)

Trickflow is offering these heads in 3 different configurations...as cast, cnc'd chambers with as cast runners, and fully cnc'd. Fully cnc'd price will be $1995.95

teke184

iTrader: (5)

$1600 + $400 for roller rockers for the TFS heads.....same price as AFR.


still will be interested to see how these do.

BlackScreaminMachine

iTrader: (17)

What I think people forget about is GM rockers do fail, and do have all the needle bearings fall out. Given with the cam profiles and valve train geometry, I can upgrade the rockers and get a kick *** head that virtually guarrentees 450 rwhp on a m6 car all day with a cam that is at least 22x/230+ Not bad.

litle88

iTrader: (20)

Speed has AFR's for 2200.00 http://www.speedinc.com/cont.cfm?cid=C0000164

I'm still 200.00 under. Now If Im gonna invest 2k on heads then why not get a good set of Rockers? Just my .o2!

QuickSilver

iTrader: (22)

The TFS 205's have Powdered metal guides, you dont have to run a roller rocker with them. Only the heads with bronze guids need the rollers.

Captain InsaneO

iTrader: (38)

Same here.

moeZ28

iTrader: (7)

If the max bore is 3.890", they wont fit a 5.7L LS1 because the stock bore is 3.898"...HAHAHA!! Thought I'd bust some *****....

Chris05ssTruck

iTrader: (9)

With these heads u can use stock rockers guys....i have personally talked to Tooley about these heads and he expexts them to make more than the "as cast" heads on most set-ups.

LilJayV10

iTrader: (39)

Do you have a link to these heads?

AINT SKEERED

iTrader: (2)

this looks like a great head for the 5.3 truck guy's too. They would be good to have opened up some more also.

MelScrilla

iTrader: (2)

this is a good head setup for DD guys and guys that are looking for decent power at a good price. Racers will still go with the 215's, hey i dont have a problem with more options. Plus these heads cost about the same as cnc'd LS6 heads.

Tom@SpeedInc

iTrader: (5)

I've spoken with trick flow in regards to these heads a couple weeks ago, TFS 205 heads are fully CNC'd they will work with factory rocker arms by using powdered metal valve guides, like stock heads. They also use your factory valves.

so you pull your heads off, swap valves and springs over. I'm looking forward to reciving a set so can check valve drop and spring pockets etc.

AINT SKEERED

iTrader: (2)

SO you will need a valve job after?