LSWNDR

I bought some heads from texas speed last year for my LME 408. The heads work fine without any problems. I was curious as to who does head porting for some more flow? My cam has more lift than the flow capability of the heads. 358CFM at 650' lift.... my cam is 251/259 660/664 111LSA. The car made 527/475 on a dynojet. M6, 4:10's, 1-7/8's LT's, TSP X-pipe.... the car runs hard from 4000RPM on up. It made 450RWT at 3000. When the car hit's 4000 it's doesn't run well. It's also running a stock L76 intake with a ported 92mm TB from texas-speed with a speed density tune... I think this camshaft was designed for say a 7.0 liter car with heads flowing 700' Lift It's seems pointless to hang a valve open for any longer than the head has an ability to flow obvisouly. Any suggestions????

WKMCD

iTrader: (2)

Richard at WCCH has a new intake program and reports some huge flow numbers. You might give him a call. BTW: Not a fan of that cam at all with the L92/LS3 heads and L76 intake. Might work better with a carb intake and carb throttle body. FWIW: My cam is about 20 degrees smaller on both sides - numbers in sig. The car's are VA Speed now for a Darton sleeved 427 build and Richard has the heads and is running his new intake program through them.

LSWNDR

How would i contact him?

SweetS10V8

iTrader: (4)

I think your reading into it a little too much. Do you honestly think your one hundreth of an inch of lift past peak flow matters?

Do you think you actually have 660+ lift dynamically? (I dont)

WKMCD

iTrader: (2)

proheads.com

Great guy!

LSWNDR

that is advertised i'm not exactly sure what your talking about

SweetS10V8

iTrader: (4)

Valve lift is measured statically, meaning not while its moving and interacting with all the other parts. When your engine is spinning and everything is exerting forces everywhere, you dont get the same amount of lift as you do statically.

Your net lift lift is probably in the .640 to low .650 range.

Money burning a hole in your pocket?? I think your car sounds great as it is!!! I think your trying to spend a lot of moeny for very little change, thats all Im getting at.

Gordon0652

iTrader: (4)

Call WCCH, they will hook you up!

LSWNDR

Yeah, but this car is running like **** not pulling hard after 4000. The intake is really holding this cam back i think really

formulakid1

What do the heads flow on the exhaust side?

Most L92/LS2 style heads do not flow that well (compared to the intake) on the exhaust side.

I would suggest going with a shorter intake lobe duration or a longer exhaust duration, or you might meet in the middle.

LSWNDR

I'm buying a new camshaft in 2 weeks to see what kind of power i can pick it from that. the lift is much smaller, but larger than the average lifts.

LSWNDR

they flow 358/232 they make the same flow numbers at 650 as the other CNC Ported heads at WCCH do at 700.... lol So i don't need nearly as much camshaft i think to do what i'm wanting it to do...

87silverbullet

iTrader: (11)

I think you just need to to refine your combo a little more. Check this out with the same heads and intake you have and the cam is nearly identical and it went into a car close to yours

https://ls1tech.com/forums/dynamomet...o-results.html

SMITHBERG RACING

To get them to flow past .650 lift the SSR needs layed back some. Let somebody with experience and a flowbench do it.

87silverbullet

iTrader: (11)

You are reading too much into flow numbers.

LSWNDR

My cam is the same as the one one in the video up top. It has a 111 LSA but it's huge...
reving to 7700RPM is going to take some more flow from the lift of the heads and the intake i was told. So the vic jr. with a adapter plate for the 4500 TB is my choice plus a want the most power n/a before i spray it....

LSWNDR

I was told that when a cams lift is bigger than the max CFM lift of the cylinder head that it's actually losing power which is why the car made such a poor number.... Is this true or false?

Richard@WCCH

iTrader: (3)

My God man! Just how much power do you think the production heads will hold? They're thin wall castings, not intended for high power applications. Always best to remember these heads are street car heads. The deck thinkness is approx. 1/2" before any surfacing. In addition you're going to need some expensive valve gear to rev a hyd. roller cam much past 7200. Most hyd. roller setups run to 6500-6800 reliably. Mechanical roller cams will go the rpms you're seeking but fitting proper springs and rockers is going to be a tough job. Not many people running big lift solid roller setups on the L92's. There's a reason for that. Mechanical roller valve gear is most always physically larger (beefy) and requires space under the valve covers. The L92 heads are very crowded on the pushrod side making fitment a difficult task. Furthermore the added stresses from the heavy valve springs loads the flimsy rocker bosses excessively.
The production L92 heads are capable of a lot more airflow than what our Stage 2 program delivers. We now have a Stage 3 intake port program that has a flow peak of 380cfm @.700" lift. At .650" the flow is 374cfm. We didn't deliberately engineer the Stage 3 to peak at .700" rather we were more concerned with flow in the .200"-.650" range. A goal I'm satisfied we reached.
If you require high rpm capabilities for your setup I would recommend looking into the All Pro LSW heads. They're designed from the ground up to deliver sufficient airflow and more importantly valve train stability with heavy spring pressures. Unfortunately the current heads will need a 4.125" bore however some of the older All Pro heads will fit a 4.0" bore setup. There are some older sets floating around.

Feel free to call us with any questions.

Best of luck,

Richard

LSWNDR

Richard you are the ******* man lol Thanks for all the information for sure i am trying to reach close as possible to 600 on motor before i spray it. So i figure that i will need to go big heads and cam plus a single plane zinging it to the moon with rpm to make it happen. BesStrokdNova made great numbers for a M6 car revving to 7700RPM... last i herd he was doing some more clutch testing for monster for sure great stuff being produced by steve... So that's my goal this year on the street. Revving high, spraying and hooking lol Alot of what if's and goals that look like they're being set kind of high, but i think it can happen if a contact the right people for the answers! I will be in touch for sure.

Jimbo1367

I agree 100%