My LX450 is getting an LS - LQ4 with 4L60E

[MMaxim]

Cut and welded shut the return nipple on my power steering pump.

Will be making high and low pressure power steering lines later this week.

 

[MMaxim]

Working on power steering lines today. Any critique is welcome!

 

[cruisermatt]

What was the reason for not just running the standard integrated reservoir pump? They fit just fine

 

[MMaxim]

What was the reason for not just running the standard integrated reservoir pump? They fit just fine

First it was just wanting to go with what came with engine. The more I looked at it the more I liked the idea of remote reservoir for ease of checks, topping off, etc. One big drawback is a potential for leaks.

 

[MMaxim]

Fuel plumbing mods today.
Got my FPR set up same as @eplazajennings, right on the fuel rail. Nice and clean.

Even the bracket of the FPR fit one of the stock bolts with a spacer.

 

[MMaxim]

I'm not even sure what I will do with all the horsepower

Starting to see the light in the end of the tunnel.

 

[MMaxim]

Heater hoses are next on my to-do list. Need a quick confirmation that I am looking at it right.
Supply (red) is going to the heater core, Return in (blue) coming back to water pump.

Diagram below confirms that.

I know I will have to add a crossover pipe between lines, but need to confirm if that diagram above is correct. Don't seem to have it in FSM.

 

[NeverFinis]

Studs for the exhaust manifolds? I want to know more....

Yes, you are correct about the supply/return of the heater core.

 

[cruisermatt]

I know I will have to add a crossover pipe between lines, but need to confirm if that diagram above is correct. Don't seem to have it in FSM.

this is an out of date mod.. I stopped doing these years ago. once the thermostat is open the same function happens internally

 

[MMaxim]

Studs for the exhaust manifolds? I want to know more....

Yes, you are correct about the supply/return of the heater core.

Here is the link to studs.

LS Header Stud Kit Stainless Steel LS1 LSX LS2 LS3 LS6 LS7 4.8 5.3 5.7 6.0 6.2

Michigan Motorsports specializes in LS1 performance Parts, LS3 Rocker Arm Trunions, Electrial harnesses and adapters, and Diesel Parts

www.michiganmotorsports.com

 

[MMaxim]

this is an out of date mod.. I stopped doing these years ago. once the thermostat is open the same function happens internally

Thank you. Matt. Not going to waste time on that then.

 

[MMaxim]

An hour a day goes a long way!
Throttle cable bracket is done, heater hoses are routed and attached. I really have to make sure not to forget the clamps

 

[MMaxim]

Looks like it's a straight shot from my stock airbox to the throttle body. Where can I find a 85 mm tube? Any ideas?

 

[NeverFinis]

Looks like it's a straight shot from my stock airbox to the throttle body. Where can I find a 85 mm tube? Any ideas?
View attachment 3735480

I used Spectre for hoses, purchased from Summit. Looks like you need a slight angle.

Aluminum Tubes | Spectre

Shop Spectre aluminum air intake tubes in 2.5 inch to 5 inch outside diameter tubing with various tube angles including, straight, 22, 30, 35, 40, 45, 60, 75, 90, 100, 110, 120 and full 180 degree "U" bend tubes.

www.spectreperformance.com

 

[MMaxim]

I used Spectre for hoses, purchased from Summit. Looks like you need a slight angle.

Aluminum Tubes | Spectre

Shop Spectre aluminum air intake tubes in 2.5 inch to 5 inch outside diameter tubing with various tube angles including, straight, 22, 30, 35, 40, 45, 60, 75, 90, 100, 110, 120 and full 180 degree "U" bend tubes.

www.spectreperformance.com

There is about a 30 degree bend. By "straight shot", I meant simple, not straight line
Thank you for the link!

 

[MMaxim]

A couple of updates:
MAF sensor fits nicely in the stock airbox lid with some silicone electric tape.

With some persuasion even one of the mounting brackets worked.

Tried putting the radiator in place to plan out the shroud and found that my fan could move forward another inch. Ordered a clutch fan with longer coupling off of 2014 Silverado 2500

Extra clearance at the intake elbow would be nice, too.

This might be the last update for a couple of weeks. Going on well deserved vacation!
Hoping to fire it up by the end of October!

 

[MMaxim]

I am back!
Exhaust today.

2.5" all the way through.

 

[daytonadogie]

Looks like it's a straight shot from my stock airbox to the throttle body. Where can I find a 85 mm tube? Any ideas?
View attachment 3735480

Unless you modify the air filter box, there won’t be enough air flow for the Lq4.

 

[MMaxim]

Unless you modify the air filter box, there won’t be enough air flow for the Lq4.

Please tell me more about it. What kind of mods are needed?

 

[daytonadogie]

Please tell me more about it. What kind of mods are neede

Please tell me more about it. What kind of mods are needed?

I tried using the stock air box with my LQ4 swap and kept getting lean codes from the ECU at high speeds. Here’s a good read:

!80 Series V8 5.3 LS swap, Colf Air intake recommendation

forum.ih8mud.com

Actually it’s post #12 that I was trying to copy, not my El Cheapo post. The whole thread is worth reading tho.