LS3 Cam and valvetrain upgrade

[shane_3800]

i could do that but i would need all the engine data to input, all rotating assembly measurements, bore, stroke, compression, combustion chamber type, all camshaft specs, rocker specs, all heads flow numbers and valve sizes ect, and more as its quite involved took me like an hour to find all my data and enter it when i first got it now its quicker cos its saved

just make it the same as an LS1 but with a intake MCSA of 2.4 and cfm at 700 lift of 290, exhaust at 700 of 200

 

[shane_3800]

The Seat Angels i need to know. The people here don't have that experience in US engines.

Seat angles don't change too much.

 

[shane_3800]

The Seat Angels i need to know. The people here don't have that experience in US engines.

The only real difference is wet flow, other than that the seats are round so they behave the same.

 

[lmoengnr]

The Seat Angels i need to know. The people here don't have that experience in US engines.

Primary seat angle on the intake valve is 30°, exhaust is 45°.
Secondary angles are up to the machine shop doing the heads, 3 angle or 5 angle seat jobs.
I'm sure European performance workshops know exactly how to set up valve seats.

 

[shane_3800]

The Seat Angels i need to know. The people here don't have that experience in US engines.

Like I said if they have a Serdi profile they will be skilled enough to do a vlave job on a LS lol. It's the industry leading valve machine, it's better than a newen.

 

[shane_3800]

Primary seat angle on the intake valve is 30°, exhaust is 45°.
Secondary angles are up to the machine shop doing the heads, 3 angle or 5 angle seat jobs.

That is stock ****, we're talking about performance stuff, Gee a Neway cutter kit has 45, 30 and 60 for DIY crap.

 

[shane_3800]

 

[07GTS]

just make it the same as an LS1 but with a intake MCSA of 2.4 and cfm at 700 lift of 290, exhaust at 700 of 200

bit fudgy but running test ill see what max hp is, had to use stock LS 6.0 basically just shift the head flow around to suit lift u wanted
peaks at about 6000rpm, 631hp crank, camshaft recommended is 236 272 108 lsa .700 lift

 

[shane_3800]

bit fudgy but running test ill see what max hp is, had to use stock LS 6.0 basically just shift the head flow around to suit lift u wanted
peaks at about 6000rpm, 631hp crank, camshaft recommended is 236 272 108 lsa .700 lift

You must have something off in the software, or it's not accounting for the rapid blow down like I said and just averaging the E port.
a 236/272 is not going to make power.
a 236 will want about a 244 max depending on LSA, but 108 LSA is pretty good for most mild stuff unless you're trying to kill low end off or top end ect,
the LSA is usually adjusted from optimum around a 106-110 to kill something off.

 

[07GTS]

its all LS tho stock intake and TB, and i could prob do more with the port flow per lift as i just quickly went thru and made it sorta linier, if its all added in right then it works, but there is alot of data to get right