5.3 truck heads
12-10-2001, 10:18 PM
#1
*Bad Trader*
Thread Starter
Join Date: Nov 2001
Location: here and there
Posts: 1,459
Likes: 0
Received 0 Likes
on
0 Posts
5.3 truck heads this may have been asked befor but i dont remember the answer, can these heads be used with no problem (provided i get good springs) on my cammed motor (563 lift) i know my comp will be around 11.1 but thats good <img src="images/icons/smile.gif" border="0"> i just want to know if anyone eles is doing it? <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />
12-11-2001, 08:20 AM
#3
TECH Regular
iTrader: (6)
Join Date: Nov 2001
Location: NY
Posts: 475
Likes: 0
Received 0 Likes
on
0 Posts
Re: 5.3 truck heads They will work just fine. You are planning on having them ported or at-least having larger valves installed correct? 5.3l & 4.8l heads have smaller valves than 5.7l heads which will more than offset the extra compression you obtain from them.
Eric
Eric
12-11-2001, 11:39 AM
#4
TECH Addict
iTrader: (3)
Join Date: Nov 2001
Location: HOU - yeah, you know the rest.
Posts: 2,959
Likes: 0
Received 1 Like
on
1 Post
Re: 5.3 truck heads I've got a set of MTI stage 2 (5.3l) truck heads on my car with their dual valve springs - the only way MTI sells them.
In stock form the 5.7l has a lager intake valve then the 5.3l head, but once they worked on they can accept the same size valves. Therefore you get the benefit of the half point more compression.
I am very satisfied with my set up from MTI. I normally run 11.90's @ 118-120 on Nitto DR and dyno 420 rwhp running with cut out closed.
Hope this helps.
[ December 11, 2001: Message edited by: LEO ]</p>
In stock form the 5.7l has a lager intake valve then the 5.3l head, but once they worked on they can accept the same size valves. Therefore you get the benefit of the half point more compression.
I am very satisfied with my set up from MTI. I normally run 11.90's @ 118-120 on Nitto DR and dyno 420 rwhp running with cut out closed.
Hope this helps.
[ December 11, 2001: Message edited by: LEO ]</p>