Ls3 429ci help please

[Mammay]

Need help if anyone knows a good size injector to use and a better clutch that wont slip or fuse because they suck when that happens anyone have any good ideas or info

[Mammay]

Need a clutch and flywheel kit

[Bad70supreme]

Dude, you have a 429ci stroker and dont have the right injectors or what? What do mean fuse?

[hypurone]

Originally Posted by Bad70supreme

Dude, you have a 429ci stroker and dont have the right injectors or what? What do mean fuse?

Clutch discs can "fuse" to the flywheel if they slip and get hot enough... Seen it in person. NASTY!

As for injectors OP, talk to Ted @ JRE. He is in love with the Injector Dynamics units he has...

[Mammay]

Yes very nasty and a big waste of money but yes my injectors are okay just think I could go bigger to help out flow

[Mammay]

Well thanks found size I need 50 lb/hr and a stage 5 monter clutch form Texas speed so I am all set except for it now it's winter and I have to put the car away

[DietCoke]

50lb/hr are gonna be small. Stocks are 42... i have 95s on my 429

[Ivan @ Southwest Speed]

Wow....everyone's bustin out 429's now! Word!!!

1.) 95's will put you in a safe duty cycle. Not a bad choice at all. Room for growth too...
2.) Do some good research on what clutch works for you. Cheap won't always be cheap in the longrun remember.

Guess it's time for something new again......looks like 429's are the new 427.
Ivan

[andredmg]

50lbs are way too small, what all went into your "429" (heads, cam, intake etc...) and how much power is it making. Weird 50s were put in, how did the tune and dyno go?????

[Mammay]

Not so good my injectors are holding me up found 65 but haven't got them yet could get a good dyno bad clutch got a little more to do and I will go for round to and get it running right but for now it sounds good but won't move hahahahahahaha

[Mammay]

Gonna go with 95s ordering them now

[Mammay]

HP= (injector size) ×* (# of cylinders) ×* (.8)--this applies to 80% injector duty cycle (see note below)
divide above result by your BSFC(.443 for N/A) (.533 if supercharged) (.555 if turbo)

Found something that really helps

[IPS Brandon]

I have no clue what is done beside the CI of the motor, however you're on the right track with that math above. There are nice calcualtors you can play with though such as RC's

http://www.rceng.com/technical.aspx

Generally this calculator is on the safe side for calculations.

How much torque are you making on the engine, or plan to. This will help "spec" the proper clutch kit. I can make just a vague recommendation though, the RPS/Hendrix Street Slayer Twin Carbon/Carbon is a much better clutch, and will hold 800 ft/lbs, slip well, and no "fusion".

If you want to chat, I am free (cost wise, not always time wise, for anyone) give us a call 740-657-3278 or email bwright@ipsmotorsports.net. Hope I can help in some way

Regards

[MileMAN402]

is this a race only car? Cuz I've heard the stage 5 monster isn't too fun on the street...