LM7 building for more power
10-02-2018, 10:57 AM
#1
LM7 building for more power
Im looking into building a LM7 for as much power as i can without replacing my heads or crank. possibly looking into adding a turbo(s). could someone tell me how to achieve my goal? I am new into building engines and not for sure what to do.
10-02-2018, 11:13 AM
#2
Without replacing heads? Seems silly, if youre going to open the motor up and add forged slugs and rods, why not replace heads?
RPMSpeed on this forum and Texas Speed online will get you anything you need. Depending on the year of motor, she might already have Gen4 rods and can take 800+ without issue.
If youve never built a motor before, my suggestion is to not use this as a learning experience. Just drop your parts and money off with the machine shop and pick up a finished motor when they call you.
If you want to make 600hp or less, dont even open it up. Just turbo it with a strong fuel system and party on
RPMSpeed on this forum and Texas Speed online will get you anything you need. Depending on the year of motor, she might already have Gen4 rods and can take 800+ without issue.
If youve never built a motor before, my suggestion is to not use this as a learning experience. Just drop your parts and money off with the machine shop and pick up a finished motor when they call you.
If you want to make 600hp or less, dont even open it up. Just turbo it with a strong fuel system and party on
The following users liked this post:
Jon1949 (10-02-2018)
The following users liked this post:
Jon1949 (10-02-2018)
10-02-2018, 11:37 AM
#4
I really just want to be able to say that i built the engine. Anyways how would you recommend to upgrade the fuel system? By the way this with a 2001 Silverado Z71 5.3. Any other suggestions?
10-02-2018, 01:55 PM
#5
As many will tell you, the stock form of LS motors are very robust and can make great power under boost.
Fuel delivery is often what limits dyno sessions. Upgrading fuel pumps and fuel injectors will be necessary for any considerable power over stock--especially with boost. As for which ones, that will depend on what your HP goal is and how you're achieving that.
"As much as possible" has many variables.
Your 4L60e trans is the greater weak link than anything within the engine. The general consensus is 4L80 or bust.
Last edited by BudRacing; 10-02-2018 at 02:02 PM.
10-02-2018, 02:18 PM
#6
I have the truck currently running. My plan was to buy a used one that’s been pulled from a truck already. Then start to pull it apart and make sure it’s a good block to use. Then I wanted to do something along the lines of internally being pistons,cam,liters,rods, things like that. Then I have considered possibly doing some work on the heads. I don’t want to sink a ton of money into the engine but I am willing to pay a little more for something that is good than to be cheap and have something destroy the engine. I have thought about new valve springs. Maybe some valve work. I’m not really familiar on what I should go for in that area though. If anyone could help me on a kinda budget friendly build that will give somewhere in the ballpark estimate of 400-500 rwhp. Approximately 600 at the crank. Thanks in advance
The following users liked this post:
wretched73 (10-02-2018)
Trending Topics
10-02-2018, 06:09 PM
#8
Some do, plenty don't.
There should be a rule that questions like this need to have set areas answered. Maybe make a form to make it easy. For example, goals, usage, budget etc...
OP, read until you can't read any more. Then develop goals and a FIRM budget.
There should be a rule that questions like this need to have set areas answered. Maybe make a form to make it easy. For example, goals, usage, budget etc...
OP, read until you can't read any more. Then develop goals and a FIRM budget.
Thread
Thread Starter
Forum
Replies
Last Post