1999FirehawkLS1

iTrader: (21)

Got a 99 Stock bottom end LS1 w MS4 cam kit Fast 102mm w 92mm PTM tb which would be the best head for all motor car?

Mods in SIG Thx!

desertLS1

iTrader: (8)

IF you have that kind of cash to throw at heads...TFS CNC 215's all the way man.

Detoxx03

iTrader: (14)

CNC'd Trick 215's

garygnu

have you flycut the pistons ?I would go with the TFS 215cc cnc head,the the 13.5 valve angle will help with ptv clearence.

SOMbitch

iTrader: (8)

I have TFS/TEA massaged 220's but $$$$ no object look at Perfomance Induction... If I had the jack that would have been my choice.... Call Va. Speed they are a dealer.

You forgot AFR which is a top shelf too......

RUTAN TA

TFS220 as cast

fatmat80

Texas Speed has had good results with their heads, but you can not argue with TFS 215 success..My vote is TFS 215..

norvilleshawn

RHS heads are prty good too. there mid flow numbers are great and thats wat u want think they might b a lil btr or less then trick flows but there cheaper and you can mill them to 37cc huge thickness very strong. i would say its one of the best heads if not the best head out thr for the money. you can take the 500 bucks you save and by smthing to make even more power.

Busy Mopper

iTrader: (4)

Tfs 215 cnc ftw!

Jason 98 TA

iTrader: (4)

With a MS4 the PRC heads can be setup about 60cc chambers & still clear p/v for the MS4. They will also include a good spring kit so you dont have to upgrade.

With the TFS heads you'll need a spring upgrade to run that lift & best case you can mill them to about 63-64cc.

chrs1313

iTrader: (24)

when are you guys going to do a head battle and end all this guessing... same cc heads all top competitors, 2 different cam choices...

Cobra R

iTrader: (6)

Buying TFS heads from Vengeance gets the springs upgraded automatically.

TFS215 will make about 8-10 more hp than the TFS220 according to some here on LS1tech.

mariofromnewyork

https://ls1tech.com/forums/dynamomet...0-results.html

I bought the 220's and got the yella terra for less than the 215s and still made great power!

Mario

shiv15

iTrader: (7)

My vote is for as cast 220cc with a little work by TEA. Save a ton compared to 215 and make the same power.

jerflash

220 as cast FTW...best bang for buck when it comes to heads and you DONT need aftermarket rockers to make them work...ask me how i know lol

SSmoken

iTrader: (26)

i have tfs as cast 220's. cant wait to put them on. if my damn shim kit would ever get here. i ordered that thing 2 months ago.

desertLS1

iTrader: (8)

How do 220's fit with out aftermarket rockers?

jerflash

dude go to your local speed shop or order these ford racing shims from jegs M-6529-A302. they work perfect and fit perfect...check out my thread hear.

https://ls1tech.com/forums/generatio...me-inside.html

all you need to get the tfs heads to work is .090 worth of shims under the stock rockers to correct geometry and in turn you need to measure for a longer pushrod. weather you go with a thicker pushrod is up to you. again check the thread and see how i did it. also get the trunion upgrade while you at it...not that hard to do with a vice and time time

smok'nZ

iTrader: (160)

x2

SSmoken

iTrader: (26)

well i already placed the order and paid. i was assuming they had them in stock. ive emailed them twice and they said they were still waiting on the pushrods to be finished.