WS6.Jay

iTrader: (2)

I have decided to go with these heads. My cam specs are:
233/239 .595"/.603" 112lsa

What headgasket should I go with? Cometic? GM? If Cometic, what thickness?

Could I mill the heads at all with this cam? I want the most compression I can safely get.

bigdsz

iTrader: (1)

I hope you flycut, if you didn't, it's not gonna fit. I have unmilled 5.3's and a Comp XER 228/230 only had .045 clearance, so I had to flycut.

mxmatt137

Actually, I spoke with the guys at TSP today. If you decided to use the 2.04" intake valve you will need flycutting. However, if you used the 2.02" intake valve you shouldnt need to. I believe, from experience, that unless you need a custom gasket or special application, the gm head gasket is a better bet. The reason for this is that the gm gasket is more forgiving, and also the gm gasket is less expensive.

erikthegoalie

iTrader: (29)

jon @TSP is running a bigger cam, the MS3, with those heads with the 2.02" intake valve, on STOCK gm gaskets with NO flycutting....

i myself am going to be running this same set up, MS3 on a 113, stage 2.5 5.3 heads with the smaller intake valve (2.02) and stock gaskets...i could have milled, flycut, and ran a thinner gasket..but ehh, i decided to build something without the need to flycut...

goodluck

erikthegoalie

iTrader: (29)

u sure you had to flycut? did you measure or just take someones word?

bigdsz

iTrader: (1)

When I degreed the cam I did a valve drop, 8-10* before and after TDC is when the valves are closest to the piston. I also clayed. You should have minimum of .080 on the intake and .100 on the exhaust. Just because the valve doesn't touch piston when you turn the engine over doesn't make it good to go. Valve float or an over rev can be disasterous.

2 SSlow

iTrader: (26)

Have you bought these yet? if so, keep us updated on your results...you planning on getting it dyno'ed after? I have the same cam, and have been looking at those heads as well.

erikthegoalie

iTrader: (29)

no kidding...

just wondering how they manage to fit an MS3 but not your cam...what am I missing???


Thanks man

BOWTIE

I think the newer 5.3's have more p/v clearance than the older ones, in addition, they have one that they sink the valves even more for increaesd p/v clearance with the larger cams like the MS3. I believe those are the ones that TSP used on the car they wrote about.

2001bluerata

iTrader: (2)

Same here... let us know how it works out for you, I'm also looking at these for my setup!

white_camaro

iTrader: (13)

i have the same cam on a 114 lsa. i was originally going to go with the 5.3's and run the stock gasket for pv. but after emailing tsp twice about heads without any replies i decided to ask predator-z. he suggested the prc stock valved ls6 heads with a .040 cometic, which is the equivalent to around 61cc. no flycutting and running the smaller gasket should make up for some of the midrange. this puts my static compression ratio at 11/1 and my dcr at 8.1/1. if i mill the heads to 59cc and use a stock gm gasket my scr will be 11.4/1 and my dcr would be 8.4/1, i like that but im not sure if it would clear without flycutting.

brad8266

iTrader: (23)

Go with a .040 gasket and have the engine clayed so that you can actually see how much you can mill off without causing PTV problems. This is the sure way to check it and know for sure how much you can take off. They will put clay on the poston top, assemble the engine/heads, turn it over, disassemble it and see how far into the clay the valves went.

With that said, you should be able to safely mill off a few cc's.

NHRAFORMULA00

iTrader: (2)

I have the ms3 on 113 tsp 2.5 heads with 2.02 1.575 with .075 intake .090 exhaust clearance,with stock gaskets.This is plenty of clearance for a 7000 rpm motor with the dual spring package.

01 BERGER CAMARO SS

iTrader: (77)

Same here, MS3 w/ the new version stage2.5 - 5.3L heads. With GM multilayer metal gaskets. My cam is at 113 and my biatch runs sick!! . She changes lanes in 4th . I sould dyno next week, looking to get 475rwhp with full tune. Im on my 3rd set of GM 3:42 gears in the last month on nittos . I still have the following waiting to be installed: Edlebrock carb EFI intake, Fast Fuelrails, 90mm NK, Elbow and 42lbs injectors. Looking to break 500RWHP !!!

Jason 98 TA

iTrader: (4)

Keep us posted on the dyno numbers 01 Berger!

These cylinder heads can be setup to clear the ms3 camshaft. We only build them with that type of clearance when the customer requests it. I typically try to setup the heads with the valves set a little bit deeper only when we need the extra clearance.

CNTLSE 1

iTrader: (11)

What kind of times are you expecting with that setup?