speedtigger

iTrader: (16)

That is an interesting list. I would love to see the stall converters for each of those combos.

topbrent

iTrader: (1)

Dmmizell: TH350, ultimate/ATI 8" treemaster 4500 stall
Iheartls1: 200r4, Ultimate 9.5" 4500 stall lockup.
jgillen91: TH400, 8" 4500 stall
87olds442: TH400, PTC 5200 stall
Burgers: TH400, Redneck 3800 stall

speedtigger

iTrader: (16)

That is a whole lotta good info right there. How to run 10s.

Doug G

Thats why I shot a lot of PM's and e-mails with more than a few who were running the numbers I was looking for....Time will tell

It's nice that some are willing to help others, give combo's, and aren't being so secret in their set-ups.

stevecritt

iTrader: (3)

Ok first, Sorry I can only post on here late in the evening due to me being deployed. I get back early next month!

Ok to answer some questions. Speedtigger i'm running my soon to be converted ltq t56 behind the 6.0

I want to car to be a dual purpose. street/strip. This is in no ways a DD car.

I want to make as much power on this stock bottom end lq9 as I can and still be able to driver her on the road. Hope this helps narrow the scope.

Oh and I'm getting a custom carb ordered as soon as I get the custom cam specs.

stevecritt

iTrader: (3)

how big a cam can I go on the stock short block?

stevecritt

iTrader: (3)

oh yeah I have also been contemplating throwing on a 100 shot. but not for certain. How big will this affect the choice on the cam if it's only used at the track every now and then but will mostly be used on the street as straight n/a.

Doug G

There will be compromises....
Gears
Stall
Cam
Will all need to be more street friendly. Big cam = low vacuum + bad brakes.

All said and told...if it were built full tilt drag Vs. a dual purpose car....it could be giving up a full second or more...all come down to what "you" think is streetable.

ZONES89RS

iTrader: (25)

Anyone notice??? 110 lsa sure seems common on those combos...

orange88ls1s-dime

I noticed it but im really not sure why.

ZONES89RS

iTrader: (25)

Honestly, it is probably a magic number average that bridges efi and carb.

stevecritt

iTrader: (3)

so you saying 110 lsa is the happy medium on the carb motors?

speedtigger

iTrader: (16)

I would like to refine this a little more and say single plane manifold carb LS motors.

I would not say it is ideal for all combos, but it sure seems prevalent on that list.

ZONES89RS

iTrader: (25)

I think it is the bride between efi and carb. They can both operate with a 110, but the carbs seem to love it more.

stevecritt

iTrader: (3)

well I shall continue on for the search and just have a custom grind once I figure out its coming from...

89gmcs15

iTrader: (7)

ive got a carbed lq9 with ls3 heads, why is my cam not ideal being that its on a 112 lsa? not to thread jack op but it might be helpful to some to go alittle into this for future searching

stevecritt

iTrader: (3)

yes I would like to know the dynamics of it as well.

orange88ls1s-dime

Wider LSA means less overlap. Overlap help create a vacuum signal by having both valves open at the same time. The scavenging effect from the exhaust pulls A/F mixture into engine. That's also where the beloved rumpety rump comes from. Tighter LSA

speedtigger

iTrader: (16)

I will share another thing that an old engine builder friend showed me. He said that as the displacement gets larger in relation to the heads, the motor will generally favor a wider LSA. Meaning that a 5.3 might like a narrower LSA compared to a 408 stroker with the same pair of heads. The particular motor he demonstrated this to me on was a 406 small block compared to the 327 that was in this particular car. The 327 ran the fastest with a 106 degree LSA cam. However, the 406 was a pig with that cam. It ran the best with a 114 LSA cam and this motor had an intake similar to a Victor Jr. (Weiand Team G). Now those heads were probably too small for that 406, but it was a great illustration of his point.

89gmcs15

iTrader: (7)

Ok, so the smaller the ci the less lsa you want. But a larger ci engine is more forgiving to finding the sweet spot. I was thinkin if my cam is wrong for my engine id hate to see what the right cam will do cuz this thing is a monster!