Professional Products Intake Manifold
FWIW my personal luck with PRP (professional race products) SUCKS..
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
On The Tree
Joined: Jun 2005
Posts: 169
Likes: 1
I sure hope you have a 96mm TB/MAF/Lid or else it wouldn't make much sense. Also, it is going to heat soak and you are going to lose all the hp you gained and it will perform less than an LS1 intake. At least that is what I read about Aluminum intake manifolds on here, oh yeah get an LS6 they are the best. 
Had to throw that in for good measure.
Had to throw that in for good measure.
Originally Posted by BYE RICE
FWIW my personal luck with PRP (professional race products) SUCKS..
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by Zentenk
I sure hope you have a 96mm TB/MAF/Lid or else it wouldn't make much sense. Also, it is going to heat soak and you are going to lose all the hp you gained and it will perform less than an LS1 intake. At least that is what I read about Aluminum intake manifolds on here, oh yeah get an LS6 they are the best. Had to throw that in for good measure.
Had to throw that in for good measure.
Try doing a little READING and research before making dumbass comments.
Originally Posted by 300bhp/ton
umm that's a very adult response I don't think.
Try doing a little READING and research before making dumbass comments.
Try doing a little READING and research before making dumbass comments.
On The Tree
Joined: Jun 2005
Posts: 169
Likes: 1
Sorry, if you read anything about aluminum intakes that is the only information I hear from the boards. It's like everyone is anti-aluminum the only excuse they can give is it heat soaks and they have no numbers of how bad. 
Oh yeah, and what good is 96mm Intake manifold if there are restrictions further down the line?
Oh yeah, and what good is 96mm Intake manifold if there are restrictions further down the line?
Originally Posted by Zentenk
Sorry, if you read anything about aluminum intakes that is the only information I hear from the boards. It's like everyone is anti-aluminum the only excuse they can give is it heat soaks and they have no numbers of how bad.
I totally missed the sarcasm in your original post. Now it makes sense LS1 Tech Stories
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Aluminum/metal intakes never stopped people with Gen I SBC from making big numbers.
Our our nova dragcar had a 350 with 327 FI heads and it put down a good 600hp with the cam we had. I'm pretty sure the wiend on it was aluminum. lol
The main advantage from plastic is wieght and ease of complex production. Thats about it.
Our our nova dragcar had a 350 with 327 FI heads and it put down a good 600hp with the cam we had. I'm pretty sure the wiend on it was aluminum. lol
The main advantage from plastic is wieght and ease of complex production. Thats about it.
Originally Posted by Justin00SS
Aluminum/metal intakes never stopped people with Gen I SBC from making big numbers.
Our our nova dragcar had a 350 with 327 FI heads and it put down a good 600hp with the cam we had. I'm pretty sure the wiend on it was aluminum. lol
The main advantage from plastic is wieght and ease of complex production. Thats about it.
Our our nova dragcar had a 350 with 327 FI heads and it put down a good 600hp with the cam we had. I'm pretty sure the wiend on it was aluminum. lol
The main advantage from plastic is wieght and ease of complex production. Thats about it.
Most people who read posts on here read something over and over again and then believe it as fact when in fact the posts they read were from others who did the same thing. They don't really have any first hand knowledge, they just keep reading the same thing.
I hate to dig up some old posts about this because I really don't want to get into it again but read these and pay attention to the vids I made concerning heat soak. The example I gave (found online) about why composite intakes came into production. Just draw your own conclusion.
Bottom line two intakes of the exact same dimensions from the exact same mold. One in compostie and one in aluminum. Obviously the compostie wins. The thing is they are not the same and each one has it's advantages in different ways.
Here's the links:
https://ls1tech.com/forums/generation-iii-external-engine/416200-bbk-vs-ls6-intake-manifold.html
https://ls1tech.com/forums/generation-iii-external-engine/413305-inside-bbk-ssi-manifold.html
https://ls1tech.com/forums/generation-iii-external-engine/419597-what-intake-manifolds-available.html
On The Tree
Joined: Jun 2005
Posts: 169
Likes: 1
I wanna put this out here... interesting read:
Its not intake manifold but you get the idea. I believe I have read about even the ram-air giving heat soak as well? LOL!! WATCH OUT YOUR TB WILL HEAT SOAK EVERYONE!
Whether or not an inlet system is made from aluminum, steel, or plastic, the thermal conductivity of the duct material has little effect on engine power. We have found that the tuning of the pipe, in addition to providing the coolest inlet air source, are the keys to making useable power. We perform engine inlet-air-temp studies when developing each application to determine the coolest location for sourcing inlet air. In addition to this, we determine the safest location for the inlet source to protect it from highly dusty conditions and water. To this end, we provide a stainless-steel heat shield to help minimize heat soak into the inlet area, as well as to provide protection from dust, dirt and mud.
At light throttle opening, air speed and airflow at the inlet system are relatively low. The high residence time of air in the inlet while at low-throttle settings will increase inlet charge temps when materials with high thermal conductivity are used. Typically, when someone is at light throttle they are not asking the engine to make power. Most likely, fuel economy is the issue.
When the throttle is fully opened however, air speed and airflow increase considerably. Typically, the inlet air speed of a 5.7L engine with a four-inch duct at full throttle is 34 feet-per-second, based on a volumetric efficiency of 70% and an engine speed of 3,000 rpm. Most inlet systems for every intake manufacturer for this engine are 30 inches or less. This means that the air in the duct of a 30-inch inlet length on this engine at the given rpm is 1/10th of a second—hardly enough time to transfer an appreciable amount of heat into the air stream on any system.
Basically, the rate at which air travels through the inlet path under open throttle, when one is asking the engine for maximum power, negates the effect of material heat soak, regardless of the material. We hope that this helps to clear up the issues of material heat absorption in intake systems. Thank you for taking the time to read this, we welcome your comments and feedback!
At light throttle opening, air speed and airflow at the inlet system are relatively low. The high residence time of air in the inlet while at low-throttle settings will increase inlet charge temps when materials with high thermal conductivity are used. Typically, when someone is at light throttle they are not asking the engine to make power. Most likely, fuel economy is the issue.
When the throttle is fully opened however, air speed and airflow increase considerably. Typically, the inlet air speed of a 5.7L engine with a four-inch duct at full throttle is 34 feet-per-second, based on a volumetric efficiency of 70% and an engine speed of 3,000 rpm. Most inlet systems for every intake manufacturer for this engine are 30 inches or less. This means that the air in the duct of a 30-inch inlet length on this engine at the given rpm is 1/10th of a second—hardly enough time to transfer an appreciable amount of heat into the air stream on any system.
Basically, the rate at which air travels through the inlet path under open throttle, when one is asking the engine for maximum power, negates the effect of material heat soak, regardless of the material. We hope that this helps to clear up the issues of material heat absorption in intake systems. Thank you for taking the time to read this, we welcome your comments and feedback!
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by Zentenk
Sorry, if you read anything about aluminum intakes that is the only information I hear from the boards. It's like everyone is anti-aluminum the only excuse they can give is it heat soaks and they have no numbers of how bad.
Oh yeah, and what good is 96mm Intake manifold if there are restrictions further down the line?
Oh yeah, and what good is 96mm Intake manifold if there are restrictions further down the line?
And for the record I personally think the heat soak issue is way overated.
As for a 96mm, well it's probably not a bad idea, there may be other restrictions, but are they really resrictions? a 75mm MAF only forces the air flow to pass thru it for a short distance as opposed to confining it to a smaller diameter tube. Also you have to think of flow rate. The 75mm opening may well flow sufficently it's just the air will move faster, which means it's poressure has been reduced and will as a by-product reduce the air temps. When it reaches a widening of the passage, or a larger area the flow speed will slow down which should increase pressure (albeit only slightly). All of these thiings are very minor which is why cars with a stock MAF and air lid running a 90mm FAST setup can still make BIG power.
Originally Posted by 69firebird
that is the trick flow intake
isnt out yet
they are supposed to be making heads too
ed
isnt out yet
they are supposed to be making heads too
ed
Jon
Originally Posted by 69firebird
that is the trick flow intake
isnt out yet
they are supposed to be making heads too
ed
isnt out yet
they are supposed to be making heads too
ed
Originally Posted by BYE RICE
FWIW my personal luck with PRP (professional race products) SUCKS..
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
I was talked into buying one of their "crosswind" manifolds instead of an RPM Air Gap like I wanted..Long story short...Their QC sucks ***** & it turned out the casting was off in some critical dimension along the centerline & it leaked water out of a 1/4 gap at the back of the manifold...This sucked because it was the only car I had at the time.
I ended up buying a good ol' MADE IN THE USA Edelbrock..Sure it cost more..but it ******* fit the first time....
Professional Products sells their **** cheap because it's made in ******* China.
I'm suprised WAL MART doens't stock their stuff..
I will NEVER buy anything else from that company.
For the money, I will probably attempt the intake in the near future!
TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
I'm waiting for the cast iron version. 
Perish the thought...a plastic hood getting hot...pshaw.
Everyone knows plastic isn't prone to heat soak.
Originally Posted by Zentenk
I believe I have read about even the ram-air giving heat soak as well? LOL!! WATCH OUT YOUR TB WILL HEAT SOAK EVERYONE!
Everyone knows plastic isn't prone to heat soak.
