erix7

Hi
i just bought an Lunati cam shaft for my race car, this is the spec:

Valves lift .651 .651
lobe lift .383 .383
ADV dur 278 282
DU@.050 227 231
center line 108 116

I have the lunati pushrods and duble valves spring.
Ported 241 heads , stock valves , ls6 intake...

The block is all stock 2001 corvette LS1

What i want to know is if it will be ok with my stock piston ?
Thanks alots !!
Eric .W


PS : this is what i bought :
http://cgi.cafr.ebay.ca/ws/eBayISAPI...ht_3252wt_1105

Rise of the Phoenix

iTrader: (27)

Are you talking about PTV clearance issues? You should be fine unless your heads are milled down to like 59cc or less.

erix7

yes PTV clearance issues !

Rise of the Phoenix

iTrader: (27)

That is a relatively small cam, so you won't have PTV clearance issues. The MS3 and MS4 are much bigger cams and people run them with stock 241 heads all day long.

erix7

nice !!! thanks alots man !!!

Eric W

Rise of the Phoenix

iTrader: (27)

You would actually benefit from having the heads milled some. It would raise your compression and give you more low end torque throughout the entire RPM range. A safe mill for that size cam would be between 60cc and 62cc.

erix7

Ok Thanks alots its help me alots !! What is The best Throtle body size you think with the ls6 intake ?

wildcamaro

iTrader: (15)

I'd check it but usually companies make them so you don't have the ptv issues...

Rise of the Phoenix

iTrader: (27)

I'd just use your stock one or have your stock one ported. No need to ugrade to a bigger TB unless you upgrade your intake.

JakeFusion

iTrader: (7)

The heads are ported... was a valve job done and larger valves installed? That affects PtV more than milling does.

erix7

The valves are stock !
Is it really better for me to put ŕ fast intake and TB (92/92?102/102?) or with the stock block and valves im ok with the ls6 intake ?
Im new in the LS world , i was running rotary engin before in my race car.
Thanks
Éric W

Rise of the Phoenix

iTrader: (27)

If you've got the coin, then going with a FAST 102 and 92 or 102 TB would be an upgrade, but it really all depends on your goals. In my opinion, I'd just stick with your LS6 intake and possibly have your stock TB ported. The heads and cam are going to wake up your car a whole lot. If you end up wanting more, then upgrade your intake and TB, or just add nitrous. Adding nitrous will likely end up costing less than a new intake and TB.

I think going from a rotary engine to a heads/cam LS1 is going to surprise you.