ok, as of right now i have a 6-spd lt1 with CAI, cat back, and 4.10 gears. i am pulling the engine because i want to put LE2 package on. Can you guys help me with what all i am going to need? i figure i may as well go ahead and put new main and cam bearings in. engine has 100k on it. will i need bigger injectors? please help me. thanks

 

Your going to need a new gasket kit with seals from top to bottom, I'd put atleast 30lb injetors, 58MM TB, upgrade the clutch to atleast a stage 2 while you have the tranny out, all new bearings to be safe, i'd put a new water pump new pistons and rings, new oil pump, new cap and rotor while your there, new plugs and wires. thats all i can think of at the moment. I'm sure others will remember things i'm missing. I know a motor build isnt cheap since my dad and i built a 355 last year and it cost about 5k.

And if your thinking about using nitrous i'd suggest forged pistons, crank, and I or H beam rods. Internaly balanced preferably.

 

You will be 4.030 pistons for a 5.7 rod if you are reuseing rods.
You will need larger injectors, 42lb should be plenty.
You will need if your building a 355 you definently need to use new bearings.
You will need a gasket kit
Bascily, you will need everything for a stock rebuild + injectors, pistons.
You might need the crank turned also. (im not sure on guidelines for when a crank needs turned).

Keep in mind, a rebuild always costs a ton more then you expect.

 

yea, i planned on spending $3500-4000 for this project so...id like to be in the low 12's..do you think i will be close? so far on my list i have the following:

LE2 h/c
total rebuild kit(includes all bearings, oil pump, freeze plugs,pistons, rings, etc.)
Long Tubes
CC Mag. 1.6's w/ pushrods
LE Intake Port
58 MM
36 LB. Injectors
New Timing Chain

will i need a better fuel pump, fpr?

 

Im useing the stock fpr on my car, stock heads. I see no reason why an LE2 will not go 12's. Your gonna need some drag radials, to hook up. Not sure if you could run a 12 spinning on street tires. Not sure on your fuel pump.

 

A friend of mine had the LE2 heads with LE1 cam and a ported intake and he went 11.9 with Mickeythompson Drag radials, 30lb injetors, 255 fuelpump with an adjustable fpr and a good tune. Yet he had a built tranny, 3.73 gears and some suspension mods with the usual bolt ons. The LE2 setup on a 355 should take you to the mid 11's to low 12's with a good tune which you will need since your going to up the injectors.

 

put arp bolts in the rods. Get at least 36lb injectors, you may need a fuel pump depending on how big of cam you get and if you ever plan to hit it with spray.

Low 12's should be no problem for a le2 car. With a good suspension and 60ft you should be able to get into the high 11's. But you may need a 12 bolt so you can dump the clutch @ 5k. May as well do a clutch while everything is taken apart.

As far as your budget, add in another thousand or so. Many unexpected things will come up.

Good luck

 

as for the drag rad.'s, i already have a set of Mickey's w/ 8-10 passes on them, ARP bolt kit is on the list, i dont have $2500 for the 12 bolt, but i have 2 sets of 4.10's in my basement, i already planned on going through gears.. i think i will go ahead and and get a 255 fp and an adj. fpr. as far as valvetrain, will i need to change anything being that i will prob. go with his custom grind 232/240 .584/.584 108LSA or should i stick w/ his small 218/224 .544/.544 111 LSA? will this engine still be somewhat fuel friendly? like above 14-15 mpg? right now im getting 19 mpg. and also, i dont plan on ever spraying this engine.

 

as far as valvetrain, will i need to change anything being that i will prob. go with his custom grind 232/240 .584/.584 108LSA or should i stick w/ his small 218/224 .544/.544 111 LSA? will this engine still be somewhat fuel friendly? like above 14-15 mpg? right now im getting 19 mpg.

 

Since your rebuilding, I'd go with the larger cam. I would if I had the chance to upgrade the main and rod bolts. Right now I have the cam in my sig only because I'm trying to keep the rpms down on the stock shortblock. 6400 on motor and 6200 on the bottle.
Give Lloyd a call and see what he thinks.

 

If you're going with the LE2 package, why do you need to decide on a cam?

With all the work you're doing, you might be better off getting a shortblock sent to you. Then you can assemble the heads on it with the motor on a stand and then you just swap accessories when you pull the old motor out.

You will definitely need to upgrade every part of the valvetrain.

 

what i mean is, will stock direct replacement stuff be ok? like my rebuild kit, it is made by Fed. Mogul out of summit. it comes with stock replacement pistons.are they ok? main journals, rods, stuff like that...can i re-use? i am gonna get an ARP Bolt Kit for entire engine