ZONES89RS

iTrader: (25)

Just wondering what you guys think, but i found a set of L92 for such a good price that if i was to get them, and a intake, i would be about the same as if i got a set of ported LS6 heads, the questions is:

How would my shitbox run with a damn Trex feeding the heads? I just dont want to swap cams as that woudl just screw everything up, just a thought and i doubt i will do it, but i just think it would run like ****.

1lejohn

iTrader: (9)

What block and pistons are you running. I would be concerned about PTV clearence with stock pistons.

ThunderStruk

iTrader: (1)

Here is my take on that option. First the cam would in no way clear the stock piston. Second thing is that the TRex was designed for a Cathedral port cylinder head. That cam would definitely not like the L92/LS3 head. There are definitely better cams that we could do for those heads, but since I see you said you didn't want to switch the heads, I would highly recommend not doing that setup.

ZONES89RS

iTrader: (25)

Exactly, i was just wondering how not worth it would it be if i was to do the swap and just run it as is till i got a different cam, but i dont want to swap cams, just wondering how horrible it would be.

It is a LQ4, stock.

3pedals

iTrader: (3)

what are the specs on a t-rex cam?

ZONES89RS

iTrader: (25)

242/248, .610/.615 lift on a 110 LSA.

3pedals

iTrader: (3)

If I had 1 kickin around, I'd fit it in there and try it. 99% sure that valve releifs will need to be cut into the pistons.

speedtigger

iTrader: (16)

Ever wonder if you car would run faster with a smaller cam?

ZONES89RS

iTrader: (25)

Nope, i know there is a possibility of it running slightly better, but since i knew i was going with better heads later, this one pays off.

stewdy1

iTrader: (3)

Think the l92 heads need alot of split on duration

Pro Stock John

iTrader: (34)

John, does Thunder have some cam profiles it likes for L92 heads, ported or stock? Thanks, John

hymey

Will work well with single plane. 6 deg split is heaps for the L92s.

ZONES89RS

iTrader: (25)

I just see allot of L92 headed combos with random *** cams that i can out run or stop their pull on me that just arent worth a **** since i am rocking the 317s, so i just wonder if it would run that bad in mine as well. Dont see why it wouldnt, but perhaps the single plane carb setup would run the same as it is now.

Why the PTV issues?

ThunderStruk

iTrader: (1)

Yes we have quite a few depending on what the customer wants. Believe it or not you don't have to put really large cams with those heads to make really good power. They normally do like larger splits in the intake and exhaust duration than a cathedral port head does like. One cam that we have had really great luck with on those heads is a 223/236 on a 115LSA. Have quite a few 2010 Camaro's make over 450+ rwhp cam only with this cam. We do have larger profiles than that particular one, and have had good results. We are still constantly developing and testing cams on a weekly basis. I actually am in the process of updating the website to reflect some of the new L92/LS3 based camshafts

ThunderStruk

iTrader: (1)

The PTV issue is that the cam is so large it barely fits under a stock Cathedral port head w/ a 2.00" intake valve. Take the L92 head with a 2.165 valve and you now have serious piston hitting valve issues.

speedtigger

iTrader: (16)

What RPM do you find the HP peak with this camshaft?

tennerv8

iTrader: (7)

I am running this cam with my L92's. http://www.summitracing.com/parts/CCA-54-428-11/ It pulls way hard all the way past 7k. I had no piston to valve clearance issues. Its only a .570ish lift.

speedtigger

iTrader: (16)

After looking at that HotRod head shootout article, I would have a hard time justifying the migration to L92s. I would speculate that some TEA or TSP ported 943s would run just as hard. And, you would not have to buy a cam, intake manifold & rockers.

Squirts11

iTrader: (14)

Lift is almost irrelevant with regard to PTV clearance, as max lift occurs when the piston is near BDC. Intake/Exhaust duration and ICL are the primary factors.

xpndbl3

iTrader: (23)

i agree