For a cheap daily driver and still occasional weekends at the strip.

Junk Yard LQ4 long block and keeping original heads on it, adding Ls6 intake and all LS1 parts from another engine including drive accessories and headers, but wanting to insert TSP 228R .588/.588 112LSA CAM. Friend told me to ask the question here if there are any gotchas I might be missing and to ask what sorts of power this would realisticly make? Note will go in a roller F-Bod that has Vig Stall and A4. thanks mucho!

 

I'd suggest a BTR stage 2 or TSP cam with split duration.

 

Stock LQ4 heads won't have much compression, so with that cam and stall it might make maybe 350-370 hp depending on the dyno.

 

Slap some 862 truck heads on it for cheap.

 

There's acoupla different iterations of LQ4. Which one?

 

I have several I can choose from but this is at the top of my list, I realize they need to be 01 and newer because of the 4l60e fitment issue, if there is otherwise a significant reason to choose one year over another I'd be happy to hear:

Year
Part
Model Description Part
Grade Stock# US
Price Dealer Info
2006
Engine Assembly
Chevy Truck Silverado 2500 6.0,AT,VIN-U,TESTED,NOTE e2216 HH0399 $900

 

Wow, you're not kidding. Rebuilt ones on ebay for only $349 free shipping LOL. I assume that's to get the CR up some, I'll have to google your suggestion and see. Might just take that advice! I realize I'd need to put the better springs in there since I'm camming it, but wow they are cheap.

 

Interesting, reviewing and comparing. Appreciate giving me another candidate to review! Looks like that one (BTR truck version I think it was) would not require me to get a spring upgrade. Still reviewing and comparing, thank you for the input.

 

Folks, I really didn't want to complicate this build but Google is showing me just how little the gains are with any of these cams and the stock lower-compression heads.

So with everyone's suggestions taken into consideration, here is where I am landing for my recipe so far:

2006 Silverado Lq4
Stock unported unshaved 862 Truck heads with dual springs and hardened pushrods
Ls6 intake and long tubes
228R cam TSP 228R .588/.588 112LSA
All other accessories from LS1 carried over
To be used in an FBody A4 with existing stall like 3200 I think for DD use and occasional weekend strip, 3.73's

Q1: Does this recipe need custom length pushrods or any other gotchas I might be missing?
Q2: Any idea on power this recipe would be at the tire?

Thank you all

 

Also, can someone confirm that the 6.0 LQ4 (dished pistons) referenced above and 862 truck heads (61.15cc according to sloppy mechanics site) should produce 10.25 to 1 CR (according to post 10 in thread linked at bottom)?

I am ready to pull the trigger on this combo and not feeling too confident, this is going to be my first venture into swapping LS engines and I know I am going to make mistakes but I'd like a good foundation to start with. Any input would be greatly appreciated on this engine/head/cam recipe.

https://ls1tech.com/forums/generatio...l#post19905917

 

I got 10.29 using summit racing's compression calculator. So yes 10.2x is correct.

The 6.0 with those heads and that compression and that cam will be a very fun driver. It'll have power everywhere and be pretty tame (tame meaning the cam isn't so big that it makes driveability go to ****). With that cam you'll need springs and hardened pushrods. With the drop in truck cams you can use stock push rods and you'll need to get some fresh LS6 valve springs, they're $70 ish

I would go with the 228 or slightly larger, instead of the truck cam.

Go ahead and do the bushing trunion upgrade while you're in the engine, don't do the roller bearing style, do the bushing style. The bearing style is showing to not last very long, many people have had issues with them. I believe TSP and WS6 store sell new upgraded factory style rocker arms too. Check with them.

While you have the engine out go ahead and replace all the seals, including cam and crank sensor o rings. While you have the oil pan off do the oil pump pick up tube o ring. If you do the oil pump pick up with the oil pan off there's little chance of tearing the o ring, if you leave the pan on and change the o ring there's a good chance you'll tear the o ring. Leaving the pan on at this point is silly since the motor is out, plus oil pan gaskets are a regular failure item anyway.

Get with WS6store ( tech@ws6store is his screen name ) on here and he can set you up with a package deal on seals rockers/bushings, cam components etc. Lance ( pantera_efi )sells a really nice timing chain and gears that doesn't cost much.

 

Thanks, that's about all I needed to know to get this project off the ground. You rock!

 

I was doing something wrong on the compression calc, It's actually 10.76 with the 61.15 cc chambered heads. But 10.76 and that cam and premium fuel should make for a fun motor.

You could also do 243/799 heads and have 10.35:1

 

Ok, sounds good. Will be thinking about fuel requirements, might ask my tuner which one he's comfortable with to keep the detonation at bay, but now I have some rough numbers to really go by instead of just slapping something together LOL. Thanks again for the info.

 

Think about fuel requirements.. My 6.0 LOVES stopping at every gas station along it's path. I think I'm getting close to 10 MPG when I'm not running the A/C... I wish I were kidding. My cam is SMALLER than yours as well. I am running 93 Octane to prevent detonation.

 

Something is way wrong with that. Or there is a good reason it only gets 10 mpg that you didn't say.

 

No problem at all. You seem to be on the right path with everything so far so I'm sure you'll end up with a great combo. If you get stuck don't be afraid to post up your other questions.

 

Add a set of GM GTP injectors. They are 42# injectors at 58psi base. Same injectors I run in a nearly identical build. I have home ported 243's on my LQ4, but my cam is boost oriented. My setup nets around 15mpgs city/20 highway.