well i just got my 383 done, but im not sure if it is going to be able to put out the #s want. its a 11.3-1cr 383 with cc306 +1.6rr 58mm tb long tubes cut out, 30 svo, under drive pulleys,lt1 heads with 2.00 -1.56 with a little port work, 3500stall 3.73 im looking for 11s @ 117 or more, does anyone have a set up like this running good #s the heads are what my big ? is because i had a local shop do themand i dont know how well they are going to flow.

 

It's all in the heads, if they are **** you won't any faster than cam only LT1's. Doing a 383 with so so heads is pointless.

 

send them to lloyd elliot (eportworks.com)

 

well i would send the heads to lloyed but i just put the motor in and i had $800 in the heads already.

 

It's all in the heads, if they are **** you won't any faster than cam only LT1's. Doing a 383 with so so heads is pointless

i dont think thats ture at all, even with **** heads it will put out a ton more torque, + i dont want to do the bottom end more than once thats why its a forged 383 with H-beams and im not saying the heads are **** the shop does good work im just saying they mite not flow as well as lloyeds heads flow. im just looking for some # that people put down with set ups close to this.

 

Its kind of hard for anyone to give you ideas on what your setup can do without a little more info on your head work. Do you have any flow numbers on them?

 

i have no flow numbers they are pocket ported and gasket matched with manley back cut 2.00-1.56 valves.

 

Don't think you'll really know until you get some dyno numbers and some track times with trap speeds. LT1's will flow good assuming there done correctly. If your not in the 11's, you should be close to it.

Ken R.

 

why are you only running 30# injectors?

 

yeah i know thats what i said to myself,only 30# but thats what golen used in there 480h.p 383 and thats what my motor is based off of.

 

hrm, thats odd, theres a formula to calculate how big of injectors you need (roughly), for mine I'm going with 42# just to be safe
I hope you get everything worked out and running how you hope.

 

yeah thanks

 

The 30# SVO's will work at 480 flywheel HP, but the duty cycle is most likely going to be over 90%, unless you have a very efficient tune.

 

yeah they have to be better than the stock 24# that are still in it, i think the 30s will be good for now, but thanks for the info.

 

anyone else think it will run 11s or not? im thinking it going to trap speeds more like 114