M1SERY

Ok im Going with 370 lq9 new , PRC 5.3 59 cc, already have them, puts it at 11:5 ,

Which cam you guys think, I drive it a lot and drag on weekend, i i spray 150 - 200
226/232 578/587 115+4
Other
236/250 625/625 115+4
Thanks

Darth_V8r

iTrader: (4)

I would split the difference between them. 230/238 113+4. 236/250 to me is too much split, but 226 on intake isn't enough cam.

That cam I just listed is cam motion Titan 5. Another great option would be tick performance LS2 street heat 2 at 231/235.

JakeFusion

iTrader: (7)

230/238 113+4 would be excellent.

NAVYBLUE210

I agree with Darth & Jake (beat me to the post LOL!), especially the Titan 5, + 8* Exhaust split
Will work better then the LS2 Street heat with +4* exhaust split
On a 150-200 shot!

HCI2000SS

iTrader: (2)

Is the cars main focus nitrous? I'm just curious since the LSA is wide on both cams?

A.R. Shale Targa

iTrader: (2)

Those sure look like Howard's grinds from Oshkosh, WI
Decent quality....you could also get a custom from them of the specs these guys are telling you...just scope their catalogue and pick the two lobes needed from other grinds....IIRC they don't have an LS 230 lobe but have a couple really nice 232 sized that with a 240 or so ex. would run strong on spray....

M1SERY

Thanks everyone for the help, had 2 well known companys spec it, both said the 236/250 115+4 625-625 lift would work great .

So, when i get it to the dyno and track i will post the results .

thanks again

thunderstruck507

iTrader: (18)

I'm running a 230/238 113+3 in mine. I don't use nitrous but the cam is in an ls2 which is similar to how your lq9 is going to be set up and it runs awesome but still drives perfect on the street.

Just to clarify though, the Cam Motion Titan V is a 230/234 113+4. The Cam Motion 230/238 is a 112+4 and called "The Penetrator" according to their website.

Mine is a custom Cam Motion cam with 230/238 .620"/.602" lift and a 113+3 LSA. That's the beauty of CM, they can grind it any way you want...different lift on the same duration lobes and what not. You get a Cam Dr report showing the cam cut is exactly what you ordered too which is nice.

Darth_V8r

iTrader: (4)

Penetrator was the one I was thinking. Thanks for the correction.

M1SERY

A few pics of lq9 370ci , really impressed with Thompsons motor sports

HCI2000SS

iTrader: (2)

I went with the TMS 370 LQ9 as well. I think you'll be very happy with it

speedtigger

iTrader: (16)

For a bottle baby with your setup, I think that 236/250 115+4 will work great. Can't wait to see your results.

96capricemgr

iTrader: (1)

Don't nitrous optimize a cam for just a 200 shot. A little extra exhaust duration is OK but wider LSA for a small shot will hurt NA more than it helps on the jug.

speedtigger

iTrader: (16)

I think it is better to talk about this in terms of overlap. When you widen the LSA, you lose overlap. But, when you increase the exhaust duration you gain overlap. So, the wider LSA by itself may not hurt N/A performance at all.

The 236/250 625/625 115+4 camshaft has 13 degrees of overlap at .050". This camshaft has more overlap than a single pattern cam of 236/236 112 which only has 12 degrees of overlap at .050".

If you look at the valve events of the recommended cam @ .050", you get this:
IVO 7
IVC 49
EVO 64
EVC 6
Overlap = 13 degrees

This cam has a little later intake valve close of 49 degrees ABDC, but with 11.5:1 compression and long runner intake like the factory peice or a FAST, that should be just fine N/A. I have seen nitrous cams that would kill N/A performance, but this should not be one.

M1SERY

Hoping to get a few runs in before track closes this year , really hoping it's not a turd on N/A , it was so had to let go a let someone tell me what cam I need, hoping it make 420 to the wheels i said hoping N/A
my worst fear is that it will run a 110 mph on n/a in the 1/4 mile,
I'm going to run a fast 92/92 , with a 92 Plate system, I did take a little time and port match it , and I'm going to set quench 35- 40, should put it around 11.5 compression with the 2 cc valve reliefs, will keep posting , going to put heads together and check piston to valve clearance so I can order head gasket s this week

NAVYBLUE210

I predict you will run at least 115, probably 117+ in good air NA.
Dyno 440-460 RWHP NA. well thought out combo will fly with
200 shot, high 9s.

thunderstruck507

iTrader: (18)

Unless you are in high altitude it should run way better than that. I trapped as high as 116mph through a stalled auto with a ls1 with 799 heads and 230/238 cam. This is in a 3700lb brick. A 4th gen fbody would add no less than 2mph to that trap due to weight, aero, and ram air.

I'm really hoping the ls2 runs at least 118mph for me.

M1SERY

Got it together ,

speedtigger

iTrader: (16)

I bet you are eager to get that in the car.

HCI2000SS

iTrader: (2)

Looks good! So when is it going in the car?