ryanater

iTrader: (2)

I have a 98 LS1 with a G5X3 cam with 114 lobe seperation and .610" lift. I'm thinking about getting the Texas Speed 5.3 stage 2.5 heads with the 58cc combustion chamber (http://www.texas-speed.com/p-1172-pr...ted-heads.aspx). This is going to be a street car that gets driven on nice days in the summer and will see the track a few times. I want something that is still streetable.

With stock pistons I believe this will get me around 11:1 compression correct? These heads should be fine with pump gas right?

Also, I assume I will have to flycut my pistons with these heads?

Let me know your thoughts on getting the heads.

pajamasam

iTrader: (6)

Im going to be doing this same exact setup later this week or so. Sounded good in my mind lol.

ryanater

iTrader: (2)

Yeah I'm mostly worried about the PTV clearance.

'02 WS6

iTrader: (73)

I believe you will have to flycut with that combo. Guy in town here did same combo, flycut, with Fast 92/92 and laid down 490/400+ so its a stout combo.

supersick99z

iTrader: (66)

Through a MAF tune or SD?

'02 WS6

iTrader: (73)

Don't remember. His name is Kryckter on here.

https://ls1tech.com/forums/dynamomet...-428-rwtq.html

Sales2@Texas-speed

iTrader: (5)

If you can give us cam specs we can give you a good idea about what will and will not clear with these heads!

2QUIK4U

iTrader: (7)

Im not 100% sure on the specs but I believe it is somewhere around 238/242 and around .640 lift.

spicebird98

iTrader: (10)

should be 234/242 114+4 on XER lobes

Cosmos

iTrader: (15)

Your going to have to cut with that cam

raymond mckinney

iTrader: (4)

I have that cam in my vette and my afr's are milled to 59cc's and I had to flycut my pistons.

BrntWS6

iTrader: (7)

Never seen that much HP on budget heads before. Definately not the norm.

Sales2@Texas-speed

iTrader: (5)

That much cam and 5.3's milled to 58cc you will have to flycut your pistons!

mike c.

iTrader: (1)

The x3 specs were on lg's web site. i believe it's a 595/609 or something. I had the cam and it was the best of all the x cams....and i had them ALL. LG makes great cams,but i think Pat G is able to make some killer cams to. I have had two of his..got one now.

ryanater

iTrader: (2)

Thanks for the info guys!

'02 WS6

iTrader: (73)

In that link I posted, Brady (roadtrip120) is mentioned, he just finished another high hp 5.3 stg 2.5 build, but with a G5X4. These budget heads pack a punch if in the proper combo. Note the race gas but see the power for what it is. Here's mod list.

507rwhp/445rwtq

1997 WS6 Trans Am M6- 3.42 gears, 315 ZR's LS1 ( out of a 28K Trans Am) Texas Speed stage 2.5 5.3 Heads (milled) LG G5X4 Cam Pace 1-3/4 Headers, Pace Y-pipe, TSP Rumbler Cat back exhaust FAST 92/90, LT1 WS6 Ram Air Lid Comp Trunion rocker upgrade, 7.350 pushrods, LS7 lifters Underdrive pulley Turn One Power Steering Pump MR12 Race Fuel, 28* Timing 12.0 A/F

BrntWS6

iTrader: (7)

Seems to be a secrect for the specs on that cam, looks to be a 24x / 24x though. That's a stout and cheap setup for sure, less money in the heads and more cam. Don't H/C cars usually run between 27-30* of timing on pump gas?