Race Jeep 5.3 Build
Thread Starter
Teching In
Joined: Sep 2014
Posts: 25
Likes: 0
Race Jeep 5.3 Build Alright Guys the time has come as my ole High comp 350 is dying a slow death.
I have 2- iron block 5.3's
the one i will be using for this build is a 99'
Block has been to the machine shop,
fresh hone (not bored)
new cam bearings
new main bearings
polished crank (no grind)
Heads were shaved .015" for flat
The jeep weighs around 3200lbs, has 4.27 axle gears, and will be spinning a TH350 trans
I have the following parts ive already purchased as i was starting this build a while back
Competition Cams 54-426-11 XFIRPM Hi-Lift XR275HR-12
COMP Cams 26918-16 Beehive 1.075"/1.310" O.D. Valve Spring
My thoughts and questions:
4.8 Pistons ( speed pro, hypereutectic)
send the heads to TEA for their 5.3 port package...
SLP oil pump
comp double roller chain
Arp Rod bolts?
Gm performance lifters and trays
Summit racing Trunion bearing upgrade
How hard can i spin this thing?
Using stock GM head gaskets, is PTV going to be an issue?
With the shaved heads, and flat top pistons what compression ratio can i expect?
Any suggestions/comments or opinions on how much HP this thing will make
The motor will spend a lot of life wide open, my current 350 gets spun too 6800 all the time
( first LS build, excited to go injected as carbs and i just dont get along)
I have 2- iron block 5.3's
the one i will be using for this build is a 99'
Block has been to the machine shop,
fresh hone (not bored)
new cam bearings
new main bearings
polished crank (no grind)
Heads were shaved .015" for flat
The jeep weighs around 3200lbs, has 4.27 axle gears, and will be spinning a TH350 trans
I have the following parts ive already purchased as i was starting this build a while back
Competition Cams 54-426-11 XFIRPM Hi-Lift XR275HR-12
COMP Cams 26918-16 Beehive 1.075"/1.310" O.D. Valve Spring
My thoughts and questions:
4.8 Pistons ( speed pro, hypereutectic)
send the heads to TEA for their 5.3 port package...
SLP oil pump
comp double roller chain
Arp Rod bolts?
Gm performance lifters and trays
Summit racing Trunion bearing upgrade
How hard can i spin this thing?
Using stock GM head gaskets, is PTV going to be an issue?
With the shaved heads, and flat top pistons what compression ratio can i expect?
Any suggestions/comments or opinions on how much HP this thing will make
The motor will spend a lot of life wide open, my current 350 gets spun too 6800 all the time
( first LS build, excited to go injected as carbs and i just dont get along)
Thread Starter
Teching In
Joined: Sep 2014
Posts: 25
Likes: 0
I was planning on using the stock 99' 5.3 heads that came with the motor. they are shaved .015 and i may send them to TEA for their porting package
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