Milled heads question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Redbeard11 · 05-08-2018, 07:38 PM

As the story goes I bought a set of tsp lsa heads that were ported,milled 5 thousandths, with hollow stem valves,68cc. Called TSP and l learned today that they were actually milled 20 thousandths and 67cc. I want to put them on my sbe ls3. What will be needed to make them work? Thicker head gasket? Shorter pushrod? Any input is welcome in advance! Thanks

frankwjr · 05-08-2018, 09:02 PM

slap on a set of LS9 gaskets...then yes measure for your new P/R length...good luck!

peace...

KW Baraka · 05-09-2018, 08:04 AM

Quote:

Originally Posted by Redbeard11

As the story goes I bought a set of tsp lsa heads that were ported,milled 5 thousandths, with hollow stem valves,68cc. Called TSP and l learned today that they were actually milled 20 thousandths and 67cc. I want to put them on my sbe ls3. What will be needed to make them work? Thicker head gasket? Shorter pushrod? Any input is welcome in advance! Thanks

What Intake manifold are you using.......and what are your cam specs?

KW

Russell James · 05-09-2018, 08:58 AM

Measure PTV (clay or dial indicator method). You'll need a spare lifter set up as a solid. And some spare headgaskets/headbolts to mock up the heads as installed.

Measure PR length. Select the PR length based on the lifter plunger depth specified by the lifter maker. Usually about .070" ish for regular travel lifters, .030"ish for short travel.

When mixing and matching modded parts, only way to fly is measuring and perfecting. Some good youtube videos out there showing the processes.

Jayjellyfish212 · 05-09-2018, 09:18 PM

In for the learning curve

05-08-2018, 07:38 PM	#1
Redbeard11 Drives: 11 camaro Join Date: Mar 2017 Location: Canton ga Posts: 129	Milled heads question As the story goes I bought a set of tsp lsa heads that were ported,milled 5 thousandths, with hollow stem valves,68cc. Called TSP and l learned today that they were actually milled 20 thousandths and 67cc. I want to put them on my sbe ls3. What will be needed to make them work? Thicker head gasket? Shorter pushrod? Any input is welcome in advance! Thanks __________________ 2011 1SS/ Thompson mtrsprts 416,Katech rotate assembly and cnc ls3 heads. Ferrera st. valves,BTR 685 Spr. F1A Procharger,3.70 pulley on 12 rib.Holley aux fuel pump,ZL1 fp and fpcm,dual alky control,Vmax TB,DSX E-85 sensor, fic1300 inj.Lsxperts custom cam,melling OP,mishimoto dual pass HX, ARH 2" headers, MD 4l80e, FTI 3200 stall,3:73 zl1 cradle, BC coil overs ,pfadt sway bars, EBC brakes and slotted rotors: 843rwhp tuned by LSXPERTS

05-08-2018, 09:02 PM	#2
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	slap on a set of LS9 gaskets...then yes measure for your new P/R length...good luck! peace... __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

05-09-2018, 09:18 PM	#5
Jayjellyfish212 Drives: 2014 1LE Join Date: Aug 2015 Location: Upstate NY Posts: 2,050 View My Garage	In for the learning curve __________________ Car mods: never enough!

05-09-2018, 08:58 AM	#4
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	Measure PTV (clay or dial indicator method). You'll need a spare lifter set up as a solid. And some spare headgaskets/headbolts to mock up the heads as installed. Measure PR length. Select the PR length based on the lifter plunger depth specified by the lifter maker. Usually about .070" ish for regular travel lifters, .030"ish for short travel. When mixing and matching modded parts, only way to fly is measuring and perfecting. Some good youtube videos out there showing the processes.