V6 Bird

iTrader: (15)

Its not finding a cam to work with them, its finding a builder who can take your heads and rotating assembly and grind the cam to do what you want it to do. Max effort or daiyl torque monster etc. Bret Bauer I believe had his hands on a setup like this recently and produced what the customer wanted...

Unfortunatley we will see cam specs flying around here soon and everyone will jump on the bandwagon. Another reason why we have soo many internet know it alls yet none producing any respectable et slips to back up their knowledge.

V6 Bird

iTrader: (15)

Peak torque and everything below it is only a concern on pump gas. You can run pump gas on whatever as long as you can control the rattle up to peak torque. Peak torque is 100% VE and you can throw whatever you want to it after that for timing because VE drastically drops after peak torque. its all in a tune. Something that very few are really skilled at with pump gas.

Beast96Z

iTrader: (21)

Unfortuantly, that's all we know. Who's to say what the goals were and if they were met power wise. The customer had no intentions of dynoing, so he's going purley off seat of the pants. Power could have been good, bad, or mediocre, but I guess we'll never know.

dame

iTrader: (3)

I think ALOT of people forget that regardless how many billion cfm your heads flow- that you are INTAKE LIMITED: which is one of the MAIN reasons I sold my ported 90/90 and AFR 225'S and went L92/L76.....

with a manifold ATTACHED these heads flow more than MOST GOOD Lsx heads do by themselves.

https://ls1tech.com/forums/generation-iv-internal-engine/602800-l92-flow-results-manifold.html
I think one of the main benifits of these heads/intake are it allows you to use a lot less cam and achieve the same results as we were used to previous to these heads being released.

If you WANT more power.... im sure you can go to a cam similiar in specs and gain more power if you wanted........ But if you were content (are we ever?) with your current power levels... I'D BET: that you could spec out something considerable smaller, and STILL have the same numbers you currently have (not to mention alot more drivibility imho)

WizeAss

iTrader: (5)

that is kinda what I was thinking... drop the compression to a more pump gas/bad gas friendly..... also run a smaller more drivable cam and get the same output... obviously if this is just out of the box numbers I assume that if you put the same effort in your big cam/LS6 head/90-90 combo you would achieve better results.

Considering an aftermarket valve from Rev is available... I would send these heads to someone like Huttos friend Chris or another SAM graduate (preferably someone with experiance in old school small blocks with hydrolic cams, since the I:E ratio is closer to that of an old school engine).....


Good luck!

Ryne @ CMS

iTrader: (10)

actually a .060" over iron block is more common then you think, i have a few friends with that much of a overbore, and have seen a few race cars that way too, although i dont see the point of that much overbore, unless its been rebuilt a few times.

jeremym

iTrader: (3)

The L76/L92 stuff is to new to get all the info I want. Really nobody has before and after dyno charts if they do please post them

WizeAss

iTrader: (5)

only 2 or three dynos so far... decent numbers but nothing near what you are doing. Most of the dynos are on LS2 engines with 4.00 bore..... to answer your comment... yes, everything is too new.

Beast96Z

iTrader: (21)

Like I said earlier, your numbers now are outstanding. Let a few people, like TSP and WCCH, finish up their CNC programs and then we will see some ported L92 results.

jeremym

iTrader: (3)

Thanks man. You are right. When something new comes out that has to do with NA hp I am like a kid in toy r us.

V6 Bird

iTrader: (15)

unfortunately the prelim numbers are VERY weak.

I say that because my porter aka Chris has already seen 370+ in R&D with about an hour of bowl work and a good valve job. Hasnt done anythint with the exhaust yet.

dame

iTrader: (3)

Please explain

jeremym

iTrader: (3)

[QUOTE=V6 Bird]unfortunately the prelim numbers are VERY weak.


535rwhp with 26* is weak. I think it is pretty good

Beast96Z

iTrader: (21)

I don't think he was talking about your power.

ThirdGenLS1

iTrader: (11)

yea i think he was talking about how the prelim numbers are in the 350ish cfm.

dame

iTrader: (3)

What prelim numbers are you reffering to that are weak in your opinion?

V6 Bird

iTrader: (15)

well yeah that too for that compression..LOL I mean when you have a 347 that made close to 690 on the engine dyno (take away 20% conservatively even for a 6 speed) that the guy drives on the street everday, imagine what the builder could do with a larger cube motor. This is a yello belly car. Its a money maker on motor and has a kit on it too.

V6 Bird

iTrader: (15)

I cant speak too loud about them, because they will cry. Ill let you make your own assumptions.

dame

iTrader: (3)

Edit...... your entitled to your opinion

V6 Bird

iTrader: (15)

Definitely not about your setup bro. I like the goal you set and achieved with it.