ls heads
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Joined: Jun 2004
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From: Marietta, GA, United States
ls heads
has anyone with a 94-95 ls ever had a pr4 head? those are for 92-93 cars only, right? i feeel as though i have been ripped off by engineered performance in smyrna, GA. im sure 94-95's had p75 heads right. pr4 heads are ****, like 130 hp rite? i just realized what happened to me 2 years ago and i am kinda mad now.
on the good side, i have a p8r head i can put on my b20. now it looks like i should do it sooner than later. my pr4 cams in my p8r head w/ the under 30,000 mile valvesprings and the great ports n stuff should be a good increase in power
on the good side, i have a p8r head i can put on my b20. now it looks like i should do it sooner than later. my pr4 cams in my p8r head w/ the under 30,000 mile valvesprings and the great ports n stuff should be a good increase in power
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Joined: Sep 2001
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Re: ls heads (B20b4door)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20b4door »</TD></TR><TR><TD CLASS="quote">has anyone with a 94-95 ls ever had a pr4 head? those are for 92-93 cars only, right? i feeel as though i have been ripped off by engineered performance in smyrna, GA. im sure 94-95's had p75 heads right. pr4 heads are ****, like 130 hp rite? i just realized what happened to me 2 years ago and i am kinda mad now.
on the good side, i have a p8r head i can put on my b20. now it looks like i should do it sooner than later. my pr4 cams in my p8r head w/ the under 30,000 mile valvesprings and the great ports n stuff should be a good increase in power</TD></TR></TABLE>
The difference is minimal. If you have the head ported, it really doesn't make a difference which casting you start with.
You weren't ripped off. It's still an LS head. From the factory, it has slightly smaller ports.
on the good side, i have a p8r head i can put on my b20. now it looks like i should do it sooner than later. my pr4 cams in my p8r head w/ the under 30,000 mile valvesprings and the great ports n stuff should be a good increase in power</TD></TR></TABLE>
The difference is minimal. If you have the head ported, it really doesn't make a difference which casting you start with.
You weren't ripped off. It's still an LS head. From the factory, it has slightly smaller ports.
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Joined: Sep 2001
Posts: 1,022
Likes: 2
Re: ls heads (B20b4door)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20b4door »</TD></TR><TR><TD CLASS="quote">but its the combustion chamber shape that is different between pr4 and p75's, rite?
isn't that where the extra 12 hp come from?</TD></TR></TABLE>
Combustion chambers are the same.
Extra power comes from intake/exhaust manifolds and mainly the cams. Don't forget that the 92-93 RS/LS/GS were rated at 140hp. (same PR4 head).
The head doesn't have much to do with the power difference.
isn't that where the extra 12 hp come from?</TD></TR></TABLE>
Combustion chambers are the same.
Extra power comes from intake/exhaust manifolds and mainly the cams. Don't forget that the 92-93 RS/LS/GS were rated at 140hp. (same PR4 head).
The head doesn't have much to do with the power difference.
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