Alright I have been reading through just about every post on this site and many others. Im trying to figure out what would be a better cam for the LS head or if its really even worth upgrading the LS head? I have read of ppl that have an upgraded valve train, some type of turbo cam like 402t's or 403's yet they say that they still lose power after 6500 rpms. This is with a port and polish.

Does anyone have some experience with the ls cam and it SUPPOSEDLY dying off after 6500, or if you get some good cams can the ls head continue to make power up to 8500?

Thanks, and any links you can provide would be good too. Dont want hear say, I want some facts and some experience.

 

I have watched 2 of my buddies with stock LS motors on the dyno (both turbo cars) and the power dropped like a rock around 5000-5500. If it was me I would just slap a vtec head on your LS block.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">I have watched 2 of my buddies with stock LS motors on the dyno (both turbo cars) and the power dropped like a rock around 5000-5500. If it was me I would just slap a vtec head on your LS block.</TD></TR></TABLE>

Sounds kinda funny!!...Because I surely didn't lose any power at that rpm range. Your boy'z motor must be lagging somewhere else. 700-7650rpm....NOT a DAMN problem!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NVturbo &raquo;</TD></TR><TR><TD CLASS="quote">
Sounds kinda funny!!...Because I surely didn't lose any power at that rpm range. Your boy'z motor must be lagging somewhere else. 700-7650rpm....NOT a DAMN problem!!!</TD></TR></TABLE>

I was talking about a stock LS motor with a stock LS head. The power and torque will start dropping well before 7000-7650 rpms. With aftermarket cams, valetrain, and headwork, then yes I'm sure it will make power that high.

I just think it would be easier/less expensive to slap a vtec head on the LS bottom end.

 

Anyone else got some good info, and what kind of cams are good to use. Also is an LS/VTEC reliable now adays. I dont wanna have to do it and then have leaks everywhere

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">

I was talking about a stock LS motor with a stock LS head. The power and torque will start dropping well before 7000-7650 rpms. With aftermarket cams, valetrain, and headwork, then yes I'm sure it will make power that high.

I just think it would be easier/less expensive to slap a vtec head on the LS bottom end.</TD></TR></TABLE>

You do have a point there about the first objective....less expensive to have a LS/VTEC...not really. You still have to consider the facts that you have to get a VTEC ECU, a COMPLETE-reliable cylinder head (with intake manifold, distributor, etc.) and a VTEC tranny to match your setup. That is not cheap by any means.

 

You wouldn't HAVE to get a tranny. At least not right away.

 

A complete GSR head is around 600-700 dollars. The ECU 150, vtec conversion kit is 250. That right there puts you around 1100 dollars. Plus the fact you gotta get a specific head gasket if you ever take the head off.

So around 1200 for a vtec head. Is it REALLY worth it? Or should a good cam be good enough for the ls head? Im looking at around 450 whp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote">Anyone else got some good info, and what kind of cams are good to use. Also is an LS/VTEC reliable now adays. I dont wanna have to do it and then have leaks everywhere</TD></TR></TABLE> reliable... It will be if you build it right but if you sit there and take short cuts.. Like any thing. It most likely won't be. But Ls/Vtec's throw up some baller numbers

 

You should get a hold of Pit Crew Motorsports in Cali. I'm sure Mike could set you up with something. They were running low 10's on a turbo LS a few years ago.

 

With the help of Golden Eagle, Portflow, Ferrea, Crower, and Crane Cams, we've built up a pretty stout straight LS engine.

Here are the specs:

<U>B18A1 Block/Head</U>
Golden Eagle Godzilla Sleeves, bored to 84.5mm by Johnson Machine Service
Wiseco/ENDYN 9.2:1 Pistons, rings
Crower 4340 Rods
Stock Crank, micropolished by JMS
Fluidampr crank pulley (thanks Art)
ARP head studs
Portflow headwork
Golden Eagle port-matched sheetmetal intake manifold
?? Throttle body (haven't decided)
Portflow bronze valve guides
Ferrea 1mm OS SS Int/Exh Valves
Crower/Portflow DVS's
Crane Cams custom-spec'd by Tony Schultz @Crane (I can email you the specs)
Crower Ti retainers machined down
Z10 Girdle (Dowelled)
Mugen oil pan
Balanced, Blueprinted, and assembled by Vince at Golden Eagle

We're shooting for 400 WHP and 400 FT/LBS.

Your best bet is to call Crane and talk to Tony. Tell him exactly what you want, and they can rec. a set of cams. The majority of people underrate the LS motor...can't wait to get the engine broken in so we can install the turbo and fuel system. Making sure everything is done right the first time.

 

Eh i got a question about turbo and cams.... I got a b16 with gsr cams.. Im going to boost my motor for sure. I hear the gsr cams are the better/best choice for boost but my question is what makes them better? The price or do the ctr/itr cams have too much of a lift or duration for boost? You guys think its worth the upgrade from gsr to ctr cams for boost?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote">A complete GSR head is around 600-700 dollars. The ECU 150, vtec conversion kit is 250. That right there puts you around 1100 dollars. Plus the fact you gotta get a specific head gasket if you ever take the head off.

So around 1200 for a vtec head. Is it REALLY worth it? Or should a good cam be good enough for the ls head? Im looking at around 450 whp. </TD></TR></TABLE>
I second that!!!