RHS Pro Elite LS7 heads...
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RHS Pro Elite LS7 heads... Anyone have any experience with these ?? They offer them in an As Cast P-Port version with accessory holes drilled...no VJ ,no CNC work just the guides i think
http://www.racingheadservice.com/rhs...nder-headhtml/
http://www.racingheadservice.com/rhs...nder-headhtml/
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I have a head porter locally in NC...did my 243's...just been considering a swap to TrickFlow heads but im up in the air about it.
First option I thought of was doing just a TFS head swap with my current cam. If I'd need a new cam to optimize the TFS heads Ill just wait and do an LS7 based top end.The RHS Pro Elite as cast bare are right on par with TFS as cast bare heads pricewise.
First option I thought of was doing just a TFS head swap with my current cam. If I'd need a new cam to optimize the TFS heads Ill just wait and do an LS7 based top end.The RHS Pro Elite as cast bare are right on par with TFS as cast bare heads pricewise.
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From: Studewood/Acres-Homes TX.
I got numbers large port 296cc flow in 390 range look in gmhightech heads & cam 0n a gen5 camaro. Looks better for 454 or better with a good head porter as cast versions could mean smaller port programs.
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I found one article where they put them on a 2011 LS3 Camaro .... the link I saved on my desk top in NC...im working in GA "LS7 UP" is name of article....
I was wondering if theyd be a good choice with the right cam in a heavy 2005 GTO or if I should stick with cathedral port heads...
I was wondering if theyd be a good choice with the right cam in a heavy 2005 GTO or if I should stick with cathedral port heads...
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There's an article in GM Hightechperformance from a couple of months ago about these heads. They are on a ls3 in a 2012 Camaro SS with a futural cam and other bolt ons. The article compared a fast 102 to a ls7 factory intake. Made good numbers, I believe around 490 hp and 430 tq with either intake. I can check to see the exact month.
hth
Andy Schuck
hth
Andy Schuck
Here is the article I mentioned a couple of days ago.
http://www.gmhightechperformance.com...y_intake_test/
hth
andy schuck
http://www.gmhightechperformance.com...y_intake_test/
hth
andy schuck
The WCCH program is proven. I've seen where they made 803HP on an engine dyno for a 436 with a solid roller and carb style intake.
I think others have made 720rwhp with them on a 440.
I'd definitely go LS7 heads on anything with a 4.125" bore. I wouldn't even worry with cathedral ports.
I think others have made 720rwhp with them on a 440.
I'd definitely go LS7 heads on anything with a 4.125" bore. I wouldn't even worry with cathedral ports.
Teching In
Joined: Apr 2013
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What kind of power did they make? Were these the out of the box CNC'd ones or did you have someone work them over?
You may consider this in contrast... Stock, the LS3 produced 469 hp at 5,800 rpm and 465 lb-ft at 4,800 rpm. With just the Mast cam, peak power increased to 533 hp, a gain of 64 hp, and the rpm at peak increased by 600 rpm, to 6,400. Torque improved to 480 lb-ft at a higher 5,400 rpm. Not bad! Next, we bolted on the Mast heads and discovered they require 8.150-inch pushrods, which are longer than stock. The heads moved the numbers to 568 hp at 6,400 and 507 lb-ft at 5,400 rpm—gains of 35 hp and 27 lb-ft with no change to the peak rpm points.
Conclusions
The Mast camshaft gives up torque below 3,200 rpm, but on average from 2,000 to 6,800 rpm, it’s far stronger than stock. The larger cylinder heads—which, in bench racing theory, make less low end—made up for the torque losses of the cam, matching the stock torque numbers through 3,200 rpm, then climbing to a curve that destroys the stock setup. The 568 hp and 507 lb-ft make for an easy mid-11-second dragstrip pass, even in a 3,900-pound car.
Bottom Line
You get 100 hp for around $4,000, but to see that gain in the car, you’ll also need long-tube headers, a cold-air kit, and a custom tune.
Dyno Results: LS3 Bolt-Ons
SOURCE
Mast Motorsports
330 NW Stalling Drive
Nagodoches
TX 75964
866-551-4916
www.mastmotorsports.com
Mast Motorsports LS3 Cam And Heads
mast_motorsports_ls3_cam_and_heads/#ixzz2lS2MMIf2[/url]
Conclusions
The Mast camshaft gives up torque below 3,200 rpm, but on average from 2,000 to 6,800 rpm, it’s far stronger than stock. The larger cylinder heads—which, in bench racing theory, make less low end—made up for the torque losses of the cam, matching the stock torque numbers through 3,200 rpm, then climbing to a curve that destroys the stock setup. The 568 hp and 507 lb-ft make for an easy mid-11-second dragstrip pass, even in a 3,900-pound car.
Bottom Line
You get 100 hp for around $4,000, but to see that gain in the car, you’ll also need long-tube headers, a cold-air kit, and a custom tune.
Dyno Results: LS3 Bolt-Ons
SOURCE
Mast Motorsports
330 NW Stalling Drive
Nagodoches
TX 75964
866-551-4916
www.mastmotorsports.com
Mast Motorsports LS3 Cam And Heads
mast_motorsports_ls3_cam_and_heads/#ixzz2lS2MMIf2[/url]
Teching In
Joined: Apr 2013
Posts: 39
Likes: 0
Stock, the LS3 produced 469 hp at 5,800 rpm and 465 lb-ft at 4,800 rpm. With just the Mast cam, peak power increased to 533 hp, a gain of 64 hp, and the rpm at peak increased by 600 rpm, to 6,400. Torque improved to 480 lb-ft at a higher 5,400 rpm. Not bad! Next, we bolted on the Mast heads and discovered they require 8.150-inch pushrods, which are longer than stock. The heads moved the numbers to 568 hp at 6,400 and 507 lb-ft at 5,400 rpm—gains of 35 hp and 27 lb-ft with no change to the peak rpm points.
Conclusions
The Mast camshaft gives up torque below 3,200 rpm, but on average from 2,000 to 6,800 rpm, it’s far stronger than stock. The larger cylinder heads—which, in bench racing theory, make less low end—made up for the torque losses of the cam, matching the stock torque numbers through 3,200 rpm, then climbing to a curve that destroys the stock setup. The 568 hp and 507 lb-ft make for an easy mid-11-second dragstrip pass, even in a 3,900-pound car.
Bottom Line
You get 100 hp for around $4,000, but to see that gain in the car, you’ll also need long-tube headers, a cold-air kit, and a custom tune.
Dyno Results: LS3 Bolt-Ons
SOURCE
Mast Motorsports
330 NW Stalling Drive
Nagodoches
TX 75964
866-551-4916
www.mastmotorsports.com
Mast Motorsports LS3 Cam And Heads
mast_motorsports_ls3_cam_and_heads/#ixzz2lS2MMIf2[/url]
Conclusions
The Mast camshaft gives up torque below 3,200 rpm, but on average from 2,000 to 6,800 rpm, it’s far stronger than stock. The larger cylinder heads—which, in bench racing theory, make less low end—made up for the torque losses of the cam, matching the stock torque numbers through 3,200 rpm, then climbing to a curve that destroys the stock setup. The 568 hp and 507 lb-ft make for an easy mid-11-second dragstrip pass, even in a 3,900-pound car.
Bottom Line
You get 100 hp for around $4,000, but to see that gain in the car, you’ll also need long-tube headers, a cold-air kit, and a custom tune.
Dyno Results: LS3 Bolt-Ons
SOURCE
Mast Motorsports
330 NW Stalling Drive
Nagodoches
TX 75964
866-551-4916
www.mastmotorsports.com
Mast Motorsports LS3 Cam And Heads
mast_motorsports_ls3_cam_and_heads/#ixzz2lS2MMIf2[/url]