would like 650fwhp or more, possible???
Thread Starter
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
would like 650fwhp or more, possible??? Hello all, putting together a 445ci ERL L76 block, with these JE pistons
Part # 312001 CID 445 Bore 4.155 Stroke 4.100 Rod Lgth. 6.125 Block Ht. 9.240
Comp. Ht. 1.065
Compression ratio (64cc 12.6) (68cc 12.0) (70cc 11.8)
Dome Vol. -5
Pistons are coated
This crank kit,
BC5457 CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Fully Balanced 4.100" 2.0987" 2.558
"
This is my first real LS build so really don't know how to get the numbers
up there, I have thrown together a few stock LS rebuilds but thats it.
I have 3 sets of heads to choose from, 243, 823 and stock cnc ported ls7 heads with lightweight valves, maybe sell these and get some real heads??
But which ones
not sure on cams I have a couple but don't think they will get me to the numbers I want. GM stage 2 hot cam and cammotion titan 2 cam, was going
to put together a L76 block but cylinders were in bad shape after the turbo
whooped up on it for awhile, so that's when ERL came to mind.
I have googled but seems like there's not much solid answers, maybe I have not searched enough.
So anybody with real experience with this I would really appreciate some
good info
Just a Daily driver with T56 trans in a 85 S10 pickup, Stock driving weight. 3100# with me and 20 gallons gas,
Thanks in advance
Part # 312001 CID 445 Bore 4.155 Stroke 4.100 Rod Lgth. 6.125 Block Ht. 9.240
Comp. Ht. 1.065
Compression ratio (64cc 12.6) (68cc 12.0) (70cc 11.8)
Dome Vol. -5
Pistons are coated
This crank kit,
BC5457 CRANKSHAFT - Chevrolet LS Series, 4.100" Stroke w/58 Tooth Reluctor Wheel, 4340 Billet, Fully Balanced 4.100" 2.0987" 2.558
"
This is my first real LS build so really don't know how to get the numbers
up there, I have thrown together a few stock LS rebuilds but thats it.
I have 3 sets of heads to choose from, 243, 823 and stock cnc ported ls7 heads with lightweight valves, maybe sell these and get some real heads??
But which ones
not sure on cams I have a couple but don't think they will get me to the numbers I want. GM stage 2 hot cam and cammotion titan 2 cam, was going
to put together a L76 block but cylinders were in bad shape after the turbo
whooped up on it for awhile, so that's when ERL came to mind.
I have googled but seems like there's not much solid answers, maybe I have not searched enough.
So anybody with real experience with this I would really appreciate some
good info
Just a Daily driver with T56 trans in a 85 S10 pickup, Stock driving weight. 3100# with me and 20 gallons gas,
Thanks in advance
TECH Veteran
Joined: Sep 2014
Posts: 4,893
Likes: 706
From: Mississippi
You'll be at 650 at the crank easily. I would sell the L92 heads and 243 heads and invest money into those LS7 heads you have. Then hit up a person that know those heads and get them to match you a cam to your combo.
If some 408 motors is cracking 650 you know it's possible with another 30 plus cubes.
If some 408 motors is cracking 650 you know it's possible with another 30 plus cubes.
First thought would be to use the LS7 heads but then again; selling those and the 243s would probably offset the cost of having Frankenstein work over the 823 heads. That way your 445 incher won't experience some of the valve breaking/guide wear issues that the 7 heads are known for.
Have Kip from Cam motion set you up with a "daily" 244 range LLSR type package and that truck should make close to 600 rear by accident.
Have Kip from Cam motion set you up with a "daily" 244 range LLSR type package and that truck should make close to 600 rear by accident.
**** those cathedral heads. Use the LS7's, replace the stock exhaust valves with some solid SS valves and have them ported by someone reputable if you could swing it. Selling the 243's and 823's would help.
The LS7s have 70cc chambers from the factory so you'd be in that 11.8-12.0 range which is just fine on 93oct.
I'm right at 12.2 on 93oct with my 442" LS7 build.
I have a FRH ported FAST and LS7 heads, Tick / Cam Motion custom solid roller, 1 7/8 headers. This thing should make 750fwhp or a little more.
A mild solid roller from Cam Motion would be cool, but a hydraulic will get you over 650fwhp easily.
What intake are you considering?
The LS7s have 70cc chambers from the factory so you'd be in that 11.8-12.0 range which is just fine on 93oct.
I'm right at 12.2 on 93oct with my 442" LS7 build.
I have a FRH ported FAST and LS7 heads, Tick / Cam Motion custom solid roller, 1 7/8 headers. This thing should make 750fwhp or a little more.
A mild solid roller from Cam Motion would be cool, but a hydraulic will get you over 650fwhp easily.
What intake are you considering?
Thread Starter
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
Thanks for the replies. Well the intake is up in the air till I decide what heads to use, all 3 heads I have takes a different intake, it will be a f.a.s.t. whatever, and a 102 throttle body, unless???
So far the 243's are out,
And see I have read somewhere that the trick flow 235 or 245 cathedral port are the heads to have, something about velocity, Don't understand that stuff at all.
I have the 1 7/8 headers that stainless works make.
And I have read that the ls7 heads are fine if you install bronze valve guides.
Still just bumfuggled.
So far the 243's are out,
And see I have read somewhere that the trick flow 235 or 245 cathedral port are the heads to have, something about velocity, Don't understand that stuff at all.
I have the 1 7/8 headers that stainless works make.
And I have read that the ls7 heads are fine if you install bronze valve guides.
Still just bumfuggled.
Yeah, there's nothing wrong with a cathedral setup. Brian Tooley and Tony Mamo have made killer power using cathedrals on big cube strokers, but naturally they both used their own personal worked over aftermarket castings. Tony used AFR and Brian used TF's.
It's all about optimizing the combo.
It's all about optimizing the combo.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Coating them for wear.
Best to talk with someone who builds heads. I know I was looking at close to $2k in valves. One of the reasons I parted my car out. The cost to step it up was out of my budget.
Tim
Best to talk with someone who builds heads. I know I was looking at close to $2k in valves. One of the reasons I parted my car out. The cost to step it up was out of my budget.
Tim
^ What he might be talking about is having the Ti intake valves recoated with a Molybdenum coating. It's what Katech recommends when using the stock valves with bronze guides. I've seen where Katech talks about the stock coating on the Ti intake valves is not as smooth as it should be and can lead to accelerated wear of the guides, which seems to be a rare occurrence but has been documented.
Most other companies send the Ti intake valves back to Del West ( who manufactures the Ti valves for the LS7 ) to have them repolished. That's what WCCH and FRH do by the way.
Katech also makes a bomb *** set of Ti exhaust valves, but they'r not recommended for use with boost or nitrous.
Most other companies send the Ti intake valves back to Del West ( who manufactures the Ti valves for the LS7 ) to have them repolished. That's what WCCH and FRH do by the way.
Katech also makes a bomb *** set of Ti exhaust valves, but they'r not recommended for use with boost or nitrous.
Thread Starter
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
Decided on the ls7 heads, I read this article
http://www.superchevy.com/how-to/140...xhaust-valves/
Now wondering if I should send the ls7 heads to AI for port work, anybody
have any experience with ported vs. non ported ls7 heads?
Found a good deal on a supposedly new ls7 fast 102 intake and fuel rails for less than
$1000.0
Purchased the fast EZ EFI 2.0 for Ls engines. Anybody have any experience with that
unit
http://www.superchevy.com/how-to/140...xhaust-valves/
Now wondering if I should send the ls7 heads to AI for port work, anybody
have any experience with ported vs. non ported ls7 heads?
Found a good deal on a supposedly new ls7 fast 102 intake and fuel rails for less than
$1000.0
Purchased the fast EZ EFI 2.0 for Ls engines. Anybody have any experience with that
unit
I don't have any experience with AI, I had Frankenstein Racing Heads port my LS7 heads and FAST 102, as well as some other machine / repair work to the heads. They came out very nice!
Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
Decided on the ls7 heads, I read this article
http://www.superchevy.com/how-to/140...xhaust-valves/
Now wondering if I should send the ls7 heads to AI for port work, anybody
have any experience with ported vs. non ported ls7 heads?
Found a good deal on a supposedly new ls7 fast 102 intake and fuel rails for less than
$1000.0
Purchased the fast EZ EFI 2.0 for Ls engines. Anybody have any experience with that
unit
http://www.superchevy.com/how-to/140...xhaust-valves/
Now wondering if I should send the ls7 heads to AI for port work, anybody
have any experience with ported vs. non ported ls7 heads?
Found a good deal on a supposedly new ls7 fast 102 intake and fuel rails for less than
$1000.0
Purchased the fast EZ EFI 2.0 for Ls engines. Anybody have any experience with that
unit
https://ls1tech.com/forums/parts-cla...s7-intake.html
Thread Starter
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
Well I already purchased the deal I spoke of in last post, I hope he delivers it,
auction ended Monday, and he said he shipped it today. I paid 6 hours after auction ended.
The waiting for all of the parts are killing me, purchased rotating assembly 3 weeks ago
paid for that day, waiting on pistons to get back from coaters, then send pistons with ls2 block to ERL for superdeck, that will be another 8 to 10 weeks, I guess waiting is all I can do.
auction ended Monday, and he said he shipped it today. I paid 6 hours after auction ended.
The waiting for all of the parts are killing me, purchased rotating assembly 3 weeks ago
paid for that day, waiting on pistons to get back from coaters, then send pistons with ls2 block to ERL for superdeck, that will be another 8 to 10 weeks, I guess waiting is all I can do.
Thread Starter
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
Does anyone recommend a company who can port the heads and have a cam ground
to take full advantage of the heads like a system who plays well together.
I know the ls7 heads have a reputation for giving up the exhaust valves, but seems like
they can be improved with a little TLC like bronze guides and ferra ex. valves
to take full advantage of the heads like a system who plays well together.
I know the ls7 heads have a reputation for giving up the exhaust valves, but seems like
they can be improved with a little TLC like bronze guides and ferra ex. valves