FigsZ28

iTrader: (70)

#'s and mods in sig

kickassT/A

iTrader: (3)

i'm waitng for beard's numbers... the motor has been siting in the showroom for awhile waiting on the heads... should be pretty high

beardWS6

iTrader: (1)

Kickass- we had 480 unlocked going to just 5400rpm`s. we are having fuel issues. I will know more soon!

camarokid94

iTrader: (2)

thats awesome! i cant wait
Figs i love those number those are what i want to end up with... well plus my 200 shot

camarokid94

iTrader: (2)

oh yeah Figs whats your duty cycle on those 60s
are most you guys runnin 42 or 60s?

WS6FirebirdTA00

iTrader: (33)

figs, what compression is that and can you give us a range on that cam in there if you dotn want to give exacts?

beardWS6

iTrader: (1)

We cut the pulls short for fuel issues. I have 42`s in. We think the MAF might be giving us some issues also. We feel 500 unlocked might be there once we make a full pull. I will post all info once final numbers are made. Where going to also lock the conv to see what we get. This cam should pull to 6400-6600 easy 244 248 612 615 113lsa will spray the 200 shot once the motor is broken in. Will let you know more later!

beardWS6

iTrader: (1)

Man, just talked to mike at G-Force. Car unlocked pulled 455rwhp 475rwtq. The cam we have is to small. He is going to order me a new one, alittle more duration and get the lift to like 640`s custom made. Not enough cam for my heads. This sucked!! I wanted her really bad, but O`well. Should have the new cam in by Sat, get it put in this weekend and see what happens. Will let everyone know then. Man I want 470 or better rwhp. I had a **** load of TRQ, just not enough RWHP!

Z'mnypit

iTrader: (58)

I hate to say it & Im not trying to being a smartass or anything but thats a little far from the 530hp goal you have been posting everywhere. Every thread in ls1tech that has to do with a 408 you respond like you got some kind of monster, & it did 455hp, thats 15 more than mine but I also had the LS6 intake & stock TB with no underdrive pulley with a 10.7-1 CR. None the less I know how you feel to have it running its a good feeling. BTW- thats the same exact cam I got in mine, I was also thinking about going bigger but dont know if I want to yet or not. Congrats....

beardWS6

iTrader: (1)

I was hoping 530 locked or better. But yea, wanted 480 or so unlocked would be nice!

But to answer your question about posting my goal. My car put right at 480RWTQ and stop making power at 5400rpm`s. does that sound right to you. You can see there is alot more left. My peak power shouldn`t be at that low of a RPM. she should make peak power at 6000-6500rpm`s. Mike said the heads need a bigger cam and I believe him. where did you peak power come in at? How much TRQ did you make? Granted, it is what it is for now. New cam should be here by Sat. I will let you know then. Thanks for your comments!

Z'mnypit

iTrader: (58)

We all hope to do that, but must your 6spd cars dont do that. So I dont see an auto with a 3800 stall, & 12bolt hitting close to 530hp unlocked. Doesnt hurt to dream though. Just wait to you put the juice to it! Know go get it broken it & enjoy your new found power.....

beardWS6

iTrader: (1)

Mike has got LME putting me a new cam together. I`m not picking the car up until the new cam is put in. So I will see!

WS6FirebirdTA00

iTrader: (33)

what compression you running? i may have missed it up there

beardWS6

iTrader: (1)

I`m running 11.3.1
This is what I don`t understand. At 5400rpm`s she stops at 445rwhp all the way threw 6500rpms flat. Now TRQ climbs to right at 480TRQ. Thats what I`m confused on. You would have thought she would still climb alittle more. I would have like to have seen 475-485rwhp with that TRQ. Can anyone explain why she leveled off so early!!

FigsZ28

iTrader: (70)

Here is a pic of my dyno sheet, My CR is right at or a tad lower than 11.8. The cam is an custom FMS 246/250 630/630 114 installed in at a 113 IC. When i was running my 42lbers my duty cycle NA was 70% and now with the 60lbers im at 59%. I also have a inline and intank 255 pump. I think i have a little more in messing with the AF but just havent had time to get back to the dyno.

WS6FirebirdTA00

iTrader: (33)

cool thanks for the info man.

by the way, how are these cars on the street wtih a 250's duration cam and a good tune? i would imagine that cam is not horrible in a 408 due to the larger cubes.

Patrick G

iTrader: (14)

The reason is, your converter is multiplying torque up until probably 6000, then after that, it's coupled up as good as it's going to get. Once coupled (where your pump and your turbine are fairly close in rpm), you should see the rpm match the hp curve. Problem is, if your coupling point is really late, you will only see this when the hp curve is on its way down, hence the flat power.

Vig 3800s are known to be terribly inefficient, especially with a motor making lots of torque. Can't G-Force lock your converter up on the dyno? This would give you a better idea of where your motor is making power (rpm wise). I would blame the converter for lackluster hp numbers and not the cam. Can't believe you've spent so much on your setup to develop big power, only to lose so much going to the tires with such a sub-par performing converter. Again, I would swap converters before I swap cams. Been there done that.

beardWS6

iTrader: (1)

What converter would be good to go with Pat. I don`t know much about them. MTI picked this conv few years back. How much more do you think its taking away from me?

But I still ask this question. Why stop at 5400 on power. Do you think the converter is causing that. I understand the lose in power. Just would have thought it still would have pulled higher before leveling out. Correct. That is my concern.

Patrick G

iTrader: (14)

Here's the problem...Precision does not do a good job of providing accurate stall speeds for LS1s. A Vig 3200 stalls 3800 behind a 346, a Vig 3600 stalls 4300, and a Vig 3800? Who knows. Problem is, now you have a 408 and probably 80 more lb. ft. of torque. It's very likely that your Vig is stalling well over 5000 rpm. Basically, your engine torque is blowing right through your converter and is not coupling up properly. Ask Pro Stock John, he'll tell you the same thing.

I've preach proper converter selection for years. People will spend tens of thousands of dollars getting the ideal heads and the ideal cam for their combination, only to **** it away with a converter that loses all that extra power to heat.

What would I recommend? I'd recommend you call Yank, TCI and ATI. Coan and Dynamic converters are also good ones. You will get more power back to the tires with a converter matched to your combination than any cam will give you. You'll have no way of ever knowing what the new (or old) cam will do without being able to efficiently transfer that power to the tires. If G-Force and LME thought your current cam would make big power, they're probably right. You'll be chasing your tail without addressing the converter issue first.

WS6FirebirdTA00

iTrader: (33)

best thing i think to do is just give me the 408, it sounds like your problem will never be fixed lol