red alert get's some head work

[DETROITMUSCLE]

My guess still stands and honestly I'd be very pleased with that as a first pass, I did 14.99 in a H/C LS1

[meissen]

Didn't know we were making bets on what my first times were going to be!

what converter and tires will be on the car?

3000ish verter good tire 12.50-12.80's

I was originally planning on a 2600-ish stall. I'm really nervous about these stalls, though, because I really don't get how well it'd work on daily driving / street use. I can't imagine revving the engine to 3000 before the car starts moving - and then when it does start moving does it brake lose like all hell since it's at 3000rpms?

My best guess would be street tires and stock converter FTL!

Maybe street tires, but definitely not stock converter. Need 2500+ for the cc503.

Has he ever raced on a track before??

Nope, definitely haven't.

If that's the case then.....

I'm saying 14.20!! He'll screw something up on his first pass like falling asleep at the light, or spinning the heck out of that one tire that doesn't have traction!!

Nothing against you B, but we all do/did it. The butterfly's in your stomach the first time you stage will be so big you won't feel anything else........ The one thing I know for sure though, is that we better have video of that first run!!

Hey 14.20 is a good start for a 1994 Camaro v6, right?!

brian told me he is getting a stall and a posi

Si senor.

[DETROITMUSCLE]

Honestly Brian I'd go 3000, trust me I don't hardly notice my 4000 and I daily it everywhere. You have to realize that it doesn't rev to 3000 before it starts moving it just flashes (jumps) there when you put it to the floor or it'll go higher depending on what gear it drops to. Your car would probably take another 300-400 rpm more to get moving with that size converter.

[LS1Formulation]

Just out of curiosity, why port match? I've been porting LT1 heads for years and I've found it's a pointless exercise. The only thing that you do when you port match is match the mouth of the port to the gasket. LT1 intakes and heads don't have a huge variance in port opening. They may need a little cleanup, but if you hog out the port openings to match a gasket, you bellmouth them and the velocity through the port is reduced. This is something that you should avoid at all costs. This is true for ANY port. It's not like gasket companies design their gaskets around airflow. Here are a couple examples of LT1 heads I have done, first pic is iron, second is aluminum. Note the shape of the port mouth. Both sets flowed over 255 CFM at 28" of water. Maybe not the best in the world, but I work out of my garage and have never had any formal training. Swirl and velocity were also quite good:

[BLKHAWK]

Just out of curiosity, why port match? I've been porting LT1 heads for years and I've found it's a pointless exercise. The only thing that you do when you port match is match the mouth of the port to the gasket. LT1 intakes and heads don't have a huge variance in port opening. They may need a little cleanup, but if you hog out the port openings to match a gasket, you bellmouth them and the velocity through the port is reduced. This is something that you should avoid at all costs. This is true for ANY port. It's not like gasket companies design their gaskets around airflow. Here are a couple examples of LT1 heads I have done, first pic is iron, second is aluminum. Note the shape of the port mouth. Both sets flowed over 255 CFM at 28" of water. Maybe not the best in the world, but I work out of my garage and have never had any formal training. Swirl and velocity were also quite good:

LT1's dont have a variance in port opening? take a good look at the intake port on an lt1 you'll see that its tapered at the top, now look at the intake thats right no taper 90% of your air flow is on the roof of the port. you talk about velocity, you have huge ports that you ported here what do you think you did to your velocity? thats right it went down. with a mild port and a valve job I can see 250ish cfm with a lot more velocity. meaning on the dyno it will make more power. the flowbench is a tool to guide but the dyno ultimatly tells the tale.

[BLKHAWK]

BTW how did you know the velocity and swirl were good? did you flow them on a "wet" flow bench as this is the only way to see swirl. and brians heads are not gasket matched, just the roof is moved back

[c0ncEpT]

I was originally planning on a 2600-ish stall. I'm really nervous about these stalls, though, because I really don't get how well it'd work on daily driving / street use. I can't imagine revving the engine to 3000 before the car starts moving - and then when it does start moving does it brake lose like all hell since it's at 3000rpms?

Yeah like Jeff said the car will just rev a few hundred RPMs more under normal driving. You will only see the said stall speed when you romp on it and flash the converter.

Its kinda like launching a snowmobile in a sense if you have ever ridden one. Give it a little gas and it revs up a bit and slowly starts moving. Lay into it and the RPMs go to the moon and you take off like a bat out of hell.

[Superman09]

FWIW Brian, with my 3600 stall, my car would move at idle....

[LS1Formulation]

The heads were flowed on a Superflow bench - what model I can't recall, but it did have a swirl meter installed. It was done at Ferris State U in the automotive lab. I understand aluminum LT1 heads have a tapered port roof, which is why I ported them to eliminate the taper. I did not hog them out, however. Must be how I took the pics that makes them look that way, but the only area I removed a large amount of material in was the port roof. Even after that, I doubt the port was any bigger than 185-190cc. If you notice, the first picture is of an iron LT1 head and those heads do NOT have the tapered port roof. I merely ported the aluminum head so the ports would more resemble the iron version. I may not have dyno tested the combination, but I installed those heads on an LT1 in a '95 Caprice along with a Comp 502 cam and ran consistent 13.4's on street tires at 4800 lbs. You can't run those kinds of numbers using small cube engine without producing a lot of torque. And you can't make strong torque without good swirl and port velocity. No need to rip on my porting abilities since I wasn't attempting to start an argument, I just stated that gasket matching is generally a pointless exercise. I may not have went to school for porting, but I do study it and I DO know what I am doing.

[MP81]

I may not have went to school for porting, but I do study it and I DO know what I am doing.

And you do have potentially one of the most entertaining avatars.

I love it.

[90Formula350]

And you do have potentially one of the most entertaining avatars.

I love it.

I think it is simply most entertaining as well lol The Heads look great !!

[GOR1LA]

Brian, i have a 3k vig stall and i don't even notice it, thinking of getting something higher actually...Like ppl have said it takes a few 100 rpm's more to move but i would do nothing less then a 3k stall

[meissen]

Yeah, I talked to Mike when I dropped my transmission off with him to see what he said about the stall size - he said he had a 9" converter he was building for me that would be like a 3200-3400ish stall. Sounds like I'm gonna be bangin'

[BLKHAWK]

Yeah, I talked to Mike when I dropped my transmission off with him to see what he said about the stall size - he said he had a 9" converter he was building for me that would be like a 3200-3400ish stall. Sounds like I'm gonna be bangin'

Perfect!

[BLKHAWK]

a little pic for ls1 formulation, here's some BBC stuff we are working on.