Motor Build

[durallymax]

Okay so ive been on the phone some lately and have come up with a mild yet stout motor build.

I want it to be on a budget and it doesnt need to support huge power levels, but certain things I dont want to do twice.

Here is what I have come up with thus far.

Carrillo Rods
ARP Main Studs
Clevite H Bearings

Now for the pistons there are a couple options.

As long as i do indeed have a bent rod and not a cracked piston i will have guy delip and coat them.

Now if they are bad i may buy a set of delipped and coated pistons from guy, but for that price i wonder if i should just spend a little more on some cast mahles. But then again maybe if i go with mahles i should just go with forged ones, i think its all going to come back to delipped and coated LB7s.

I will be having curtis at DPR balance everything, and key the crank and cam.

Hopefully i do not have to overbore it at all but if i do i will have curtis do that as well.

Now for questions

1. I dont know if I need a damper or not, if so ill get the one from guy, but like I say, not sure if i need it or not.

2. While the injectors are out I would like to send them out to get them honed out, but i know they aren't cheap to do. I also am considering guys injector stud and holdown kit. What percentage should I go. 80%?? Then again I am sure this depends on whether or not I have the twin CP3s on or not.

Also, I have a second CP3 sitting here so buying a twin CP3 kit and doing them would be really nice, but this is the last thing on my list as I can always do this fairly easily on short notice when funds become available

3. Now im not an experienced engine builder, just a youngin, so on the pistons i do have a couple questions. If mine are bad, can I use the ones out of my other motor or will things not work??

4. Also if i need to overbore the cylinders, can i still use my original pistons or do i need to go new?? Im assuming i can still use them.

5. Also do i need to replace the headgaskets again or are they multiple use??

6. Ive also heard a few times that its a good idea to just replace the water pump while its out. Do most guys do this or no?? I know its not fun to get to once its in the truck.

7. And I think my last question is all of the gaskets and seals and o rings and such. I see GM has a master overhaul gasket kit or something they call it. Anybody know whats in it??

8. Do I need to lower the compression ratio a bit?? I plan on sticking with this S400 for a little while.

9. Anything Im missing??

Not sure when this will be finished, funds just arent there, but I want to get everything penciled in so I have a solid figure to work off of.

Thanks guys.

 

[TrentNell]

Okay so ive been on the phone some lately and have come up with a mild yet stout motor build.

I want it to be on a budget and it doesnt need to support huge power levels, but certain things I dont want to do twice.

Here is what I have come up with thus far.

Carrillo Rods
ARP Main Studs
Clevite H Bearings

Now for the pistons there are a couple options.

As long as i do indeed have a bent rod and not a cracked piston i will have guy delip and coat them.

Now if they are bad i may buy a set of delipped and coated pistons from guy, but for that price i wonder if i should just spend a little more on some cast mahles. But then again maybe if i go with mahles i should just go with forged ones, i think its all going to come back to delipped and coated LB7s.

I will be having curtis at DPR balance everything, and key the crank and cam.

Hopefully i do not have to overbore it at all but if i do i will have curtis do that as well.

Now for questions

1. I dont know if I need a damper or not, if so ill get the one from guy, but like I say, not sure if i need it or not.

2. While the injectors are out I would like to send them out to get them honed out, but i know they aren't cheap to do. I also am considering guys injector stud and holdown kit. What percentage should I go. 80%?? Then again I am sure this depends on whether or not I have the twin CP3s on or not.

i am going to run 40% overs

Also, I have a second CP3 sitting here so buying a twin CP3 kit and doing them would be really nice, but this is the last thing on my list as I can always do this fairly easily on short notice when funds become available

3. Now im not an experienced engine builder, just a youngin, so on the pistons i do have a couple questions. If mine are bad, can I use the ones out of my other motor or will things not work??
yes you can , i asume they are still lb7 ?
4. Also if i need to overbore the cylinders, can i still use my original pistons or do i need to go new?? Im assuming i can still use them.

no if you need a over bore you will need new pistons

5. Also do i need to replace the headgaskets again or are they multiple use??

6. Ive also heard a few times that its a good idea to just replace the water pump while its out. Do most guys do this or no?? I know its not fun to get to once its in the truck.

i would while you have it apart

7. And I think my last question is all of the gaskets and seals and o rings and such. I see GM has a master overhaul gasket kit or something they call it. Anybody know whats in it??

i believe most have got the gaskets induvidually

8. Do I need to lower the compression ratio a bit?? I plan on sticking with this S400 for a little while.

not anymore than the standard piston cut and your grade c head gaskets

9. Anything Im missing??

Not sure when this will be finished, funds just arent there, but I want to get everything penciled in so I have a solid figure to work off of.

Thanks guys.

i am no expert either but i can answer a few of them . see red

 

[durallymax]

thnaks trentnell.

yes the other pistons are LB7s. Gmpartsdirect wants a little over 500 for that kit so i think ill just get them individually, i know theres a few people who have all of the P/Ns.

 

[2500HeavyDuty]

2. While the injectors are out I would like to send them out to get them honed out, but i know they aren't cheap to do. I also am considering guys injector stud and holdown kit. What percentage should I go. 80%?? Then again I am sure this depends on whether or not I have the twin CP3s on or not.


get nozzles atleast they bout 600 from most places



5. Also do i need to replace the headgaskets again or are they multiple use??

fwiw water pumps can be found for 75 dollars, save urself 4 hours of work and do it while the motor is out

Thanks guys.

hope it gets you some ideas

 

[TrentNell]

thnaks trentnell.

yes the other pistons are LB7s. Gmpartsdirect wants a little over 500 for that kit so i think ill just get them individually, i know theres a few people who have all of the P/Ns.

not shure on the head gaskets man , if i was building for some one else i would say replace but they were just put on your truck . for myself it is a pain to change them so i would probably replace again as cheap insurance but there have been plenty of times i have had more time than money and might gamble.

 

[JoshH]

Now for questions

1. I dont know if I need a damper or not, if so ill get the one from guy, but like I say, not sure if i need it or not. If you have the money, I would do it while you are getting everything balanced.

2. While the injectors are out I would like to send them out to get them honed out, but i know they aren't cheap to do. I also am considering guys injector stud and holdown kit. What percentage should I go. 80%?? Then again I am sure this depends on whether or not I have the twin CP3s on or not. I think 80% on an LB7 is way too big if you plan on daily driving the truck. You could probably get by with 40%.

Also, I have a second CP3 sitting here so buying a twin CP3 kit and doing them would be really nice, but this is the last thing on my list as I can always do this fairly easily on short notice when funds become available

3. Now im not an experienced engine builder, just a youngin, so on the pistons i do have a couple questions. If mine are bad, can I use the ones out of my other motor or will things not work?? What's your other engine? You should be able to use them, but if you have an extra engine, why not just put that engine in the truck and build the other when you have the funds to do it the way you really want to?

4. Also if i need to overbore the cylinders, can i still use my original pistons or do i need to go new?? Im assuming i can still use them. No, if you bore the engine, you will have to buy overbore pistons.

5. Also do i need to replace the headgaskets again or are they multiple use?? Not sure, but I think you have to replace them. I'll say that I would not reuse head gaskets.

6. Ive also heard a few times that its a good idea to just replace the water pump while its out. Do most guys do this or no?? I know its not fun to get to once its in the truck. I didn't replace mine the first time, and I don't plan on replacing it this time. I only have 50k on the truck though.

7. And I think my last question is all of the gaskets and seals and o rings and such. I see GM has a master overhaul gasket kit or something they call it. Anybody know whats in it?? It has almost everything you need and a lot of stuff you don't, but you would probably be better off buying everything individually.

8. Do I need to lower the compression ratio a bit?? I plan on sticking with this S400 for a little while. I ran 15:1 on my first build. That was a little too low in my opinion. I would try to keep it above 16:1. if you can keep it at or above 16.5:1 that would be even better.

9. Anything Im missing??

Not sure when this will be finished, funds just arent there, but I want to get everything penciled in so I have a solid figure to work off of.

Thanks guys.

Replies in red.

 

[durallymax]

thanks josh.

Other motor is an LB7 but was a test motor so some things are a little different. I would put it in, but in my curiosity i tore it all apart and to put it back together would still cost a little. Plus i didnt mark which piston came out where so im sure that would be an issue.

I think i will still be able to get it done in the next couple months, when i told my sponsors they all had the same response, o f#ck.

Ill plan on just doing a water pump and new HGs for cheap insurance.

I questioned the balancer for when i get it balanced, this way I have everything I need. I think i will just do one so i dont have to mess around with it later.

Injectors I really didnt know, originally when I was talkign to merchant about a built motor with twin turbos and twin CP3s he said 80%. But the other day he also thought I had an LLY.

For the comp ratio i was just wondering, since guy will have the pistons anyways, if I should have them cut down a bit or not.

 

[Idaho CTD]

Do valve springs and head studs. If your going to run the fuel you need the air and it comes with higher boost. I personally would do the ARP 625 studs for piece of mind.

 

[durallymax]

already have ARP 2000s. I had thought about 625s till i saw the price.

I was hoping to not have to do much to the cylinder heads at this point. Only reason I would do anythign is for strength and reliability

 

[JoshH]

You don't have to do anything with the heads to do valve springs.

 

[Utahski]

Since Curtis will be doing some of it, take his advice on what's needed. And don't mess around with different people doing different things, it won't save you anything. You want it right.....have him do the whole thing. Also use his rods.

 

[durallymax]

You don't have to do anything with the heads to do valve springs.

im aware of that, i just mean in general didnt want to do muchwith the valvetrain unless i needed to.

If i need to then i will

 

[durallymax]

Since Curtis will be doing some of it, take his advice on what's needed. And don't mess around with different people doing different things, it won't save you anything. You want it right.....have him do the whole thing. Also use his rods.

im not having different people do differen things, he doing the machining and im assembling it, thats all the people that are touching it.

Why should i run his rods over carrillos?? I havent heard any feedback on his?

 

[paint94979]

already have ARP 2000s. I had thought about 625s till i saw the price.

I was hoping to not have to do much to the cylinder heads at this point. Only reason I would do anythign is for strength and reliability

The 625's are like 900$ more than the standard ones they are def. worth it.

 

[durallymax]

The 625's are like 900$ more than the standard ones they are def. worth it.

well in all honesty am i really going to need them??

I plan on having this thing out again in the future.

Im not doing this build as an end to all completely finished never coming back out build.

 

[JoshH]

im aware of that, i just mean in general didnt want to do muchwith the valvetrain unless i needed to.

If i need to then i will

Being that you are a sled puller, you probably run higher RPMs. I would think you would want them rather than risking floating a valve and causing piston, valve, and/or head damage from piston to valve contact.

 

[JoshH]

The 625's are like 900$ more than the standard ones they are def. worth it.

Why? How many people running standard ARP head studs are lifting heads?

 

[durallymax]

Thats what I needed to know. I see they arent too bad in price.

Anythign else i need with them?? Or just the set.

Im looking at the ones from guy, if there are other options out there or better ones let me know

 

[durallymax]

Why? How many people running standard ARP head studs are lifting heads?

thats what i thought too.

 

[Utahski]

im not having different people do differen things, he doing the machining and im assembling it, thats all the people that are touching it.

Why should i run his rods over carrillos?? I havent heard any feedback on his?

Because his rods are lighter and super strong and super precision, and they even cost a few hundred$ less. If you're not experienced at building engines, have Curtis put it together. Definitely worth knowing it's done right. And again....he can answer every one of your questions.