5.3 longblock best
Dec 21, 2021 | 12:51 PM
#31
Reworked 706 heads would be a good choice too if you can get 93 octane. How many of those miles did you put on the truck? My truck might hit 300K... but I won't be around to see that milestone.
You guys do know I've been spreading bondo just shy of 45 years
Now you know why I have a rollpan lol
You guys do know I've been spreading bondo just shy of 45 years
Now you know why I have a rollpan lol
Dec 21, 2021 | 01:13 PM
#32
Shlumpt
Joined: Nov 2019
Posts: 4,451
Likes: 1,522
From: Shlumpt, TX
Hey Bud, yeah, Im trying to learn stuff If I do 5.3 with flat top pistons, why cant use 243? what do you mean rework 706 heads. So It is worth than spend on 6.0 it may more gas than 5.3 if I get someone to build me 5.3 with flat top? Can you help me find gen 4 rods and flat top pistons?
Dec 21, 2021 | 01:31 PM
#33
Dec 21, 2021 | 01:37 PM
#34
Shlumpt
Joined: Nov 2019
Posts: 4,451
Likes: 1,522
From: Shlumpt, TX
Why do you want flat tops over dished pistons?
On my LQ4 with 862 heads, around 10.4:1 compression which is close to what you would get with flat tops, I get 17 MPG. That was better than my 5.3 which was getting around 16 MPG.
In terms of cost you are just going to have to look around. How much do you have to spend? The forged rods and pistons shown above I think would be fine to run in a daily.
On my LQ4 with 862 heads, around 10.4:1 compression which is close to what you would get with flat tops, I get 17 MPG. That was better than my 5.3 which was getting around 16 MPG.
In terms of cost you are just going to have to look around. How much do you have to spend? The forged rods and pistons shown above I think would be fine to run in a daily.
Dec 21, 2021 | 03:07 PM
#35
Why do you want flat tops over dished pistons?
On my LQ4 with 862 heads, around 10.4:1 compression which is close to what you would get with flat tops, I get 17 MPG. That was better than my 5.3 which was getting around 16 MPG.
In terms of cost you are just going to have to look around. How much do you have to spend? The forged rods and pistons shown above I think would be fine to run in a daily.
On my LQ4 with 862 heads, around 10.4:1 compression which is close to what you would get with flat tops, I get 17 MPG. That was better than my 5.3 which was getting around 16 MPG.
In terms of cost you are just going to have to look around. How much do you have to spend? The forged rods and pistons shown above I think would be fine to run in a daily.
Dec 21, 2021 | 03:10 PM
#36
Shlumpt
Joined: Nov 2019
Posts: 4,451
Likes: 1,522
From: Shlumpt, TX
Ah okay I understand. I don't know a lot about forged rods and pistons so you would have to ask some other members.
I would check LKQ or car-part, normally they are pretty good. I have bought parts using car-part before.
I would check LKQ or car-part, normally they are pretty good. I have bought parts using car-part before.
Dec 21, 2021 | 04:00 PM
#38
Dec 21, 2021 | 06:36 PM
#40
TECH Apprentice
Joined: Aug 2017
Posts: 393
Likes: 64
From: Treasure Coast of Florida
Hey Bud, yeah, Im trying to learn stuff If I do 5.3 with flat top pistons, why cant use 243? what do you mean rework 706 heads. So It is worth than spend on 6.0 it may more gas than 5.3 if I get someone to build me 5.3 with flat top? Can you help me find gen 4 rods and flat top pistons?