5.3 build
12-18-2009, 03:56 PM
#1
Teching In
Thread Starter
Join Date: Oct 2009
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
5.3 build
i have an 01 4x4 with the 5.3 with 170,000 miles so i was looking at buying another engine to bore and port the heads and add a cam for some extra power. anyway found one with a cam already in it. tell me what you guys think.
2001 5.3L with 70k miles on it out of silverado.
Brand new Cam for LS1 Specs are lift- 580/590...Dur..288/294 (@ .050 236-242)
cam type XR- 288.... lobe sep. 112
with a .030 over bore and nice port job on the heads what kind of power you think im looking at. any suggestions im all ears.
2001 5.3L with 70k miles on it out of silverado.
Brand new Cam for LS1 Specs are lift- 580/590...Dur..288/294 (@ .050 236-242)
cam type XR- 288.... lobe sep. 112
with a .030 over bore and nice port job on the heads what kind of power you think im looking at. any suggestions im all ears.
12-18-2009, 04:34 PM
#2
Teching In
Thread Starter
Join Date: Oct 2009
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
also willing to look at other cam options aswell. truck is not everyday driver but still want some reliability. would love to get around 375-400 hp. what sponsors on here or other online shops have the best engine components for sale like cams, rotating assemblies etc...? thanks for the help guys.
12-18-2009, 04:35 PM
#3
Teching In
Thread Starter
Join Date: Oct 2009
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
also willing to look at other cam options aswell. truck is not everyday driver but still want some reliability. would love to get around 375-400 hp. what sponsors on here or other online shops have the best engine components for sale like cams, rotating assemblies etc...? thanks for the help guys.
12-19-2009, 06:44 PM
#4
11 Second Club
iTrader: (6)
Join Date: Feb 2005
Location: middle of nowhere, Kansas
Posts: 1,401
Likes: 0
Received 5 Likes
on
5 Posts
That cam listed in your first post is a big one. Not sure I'd go that big in a 5.3 motor. What trans do you have in your truck? Do you already have bolt-ons like headers and intake?
Not sure about the "best" vendor, but I've ordered stuff several times from Texas Speed. They are reliable, ship fast, and their parts are competitively priced.
Not sure about the "best" vendor, but I've ordered stuff several times from Texas Speed. They are reliable, ship fast, and their parts are competitively priced.
12-19-2009, 09:51 PM
#5
TECH Addict
iTrader: (4)
Join Date: Jun 2004
Location: Michigan
Posts: 2,584
Likes: 0
Received 0 Likes
on
0 Posts
236/242 is much too large, its not even in the right zip code.
Sell the one thats in it and buy one thats better suited for your application. YOu have to tell us about your setup first though. More than a 5.3L with ported heads.....
CNC heads? hand ported heads? have they been on a flow bench, you can really screw up heads attempting to port if you dont know what your doing.
Sell the one thats in it and buy one thats better suited for your application. YOu have to tell us about your setup first though. More than a 5.3L with ported heads.....
CNC heads? hand ported heads? have they been on a flow bench, you can really screw up heads attempting to port if you dont know what your doing.
12-20-2009, 11:24 AM
#6
Teching In
Thread Starter
Join Date: Oct 2009
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
after discussing with my father who also agrees that the cam is way to powerful and the wife telling me I cant go all out on the build if im going to build my charger and camaro so im just going to go with a bored out block, upgrade the stock heads with upgraded springs/valves with port job. rest of engine will be stock with exception of the dual exhaust already on the truck and the a cold air intake and throttle body spacer. will keep transmission stock or maybe add a shift kit. what i have is an 01 silverado halfton 4x4 with 6 inch fabtech lift. Just want to add some more torque and horsepower since it has 170k miles on it. that way when the engine goes or when i complete new engine she is nice and new. transmission is also stock. thinking of adding 3.73 gears in the rear also, however, i do a lot of highway driving and the rpm's are perfect right now. really appreciate the info and as always im all ears.
Trending Topics
12-20-2009, 11:41 AM
#8
Teching In
Thread Starter
Join Date: Oct 2009
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
hmmm after looking at texas speed i can get a 347 rotating assemble, head and cam package plus bolts ect.. for about 3k. Not sure how much difference i will see with the rotating assembly compared to the head and cam package and .030 bore on the block. I can justify the heads and cam package to the wife but not sure if i can convince myself or her to up the other 1500.00 for the rotating assembly your input guys plzzzz! head cam package and rotating assembly 3k vs. head cam package plus bore job 1550 or so. ballpark figure on horse power and torque for both setups???
12-20-2009, 05:51 PM
#10
11 Second Club
iTrader: (6)
Join Date: Feb 2005
Location: middle of nowhere, Kansas
Posts: 1,401
Likes: 0
Received 5 Likes
on
5 Posts
If your current crank and rods are in good shape, you can probably save some cash by just having them reconditioned at the machine shop. Might invest in ARP rod bolts if you want, that's sort of the weak point of the bottom end. Since you're boring the cylinders, you'll need new pistons. Forged would be really nice if you can swing the extra cost. With that many miles on the motor, you'll probably want a new timing chain and gear set, plus a new oil pump. Those things will give you a solid bottom end. Then you can figure out what to do with the heads and cam. Well, except you kind of need to know what heads you'll be getting before getting the pistons (to determine the compression ratio).