800 HP All Motor Recipe
#1
800 HP All Motor Recipe
I have a customer that is Hell bent on me building an 800 flywheel HP all motor 434 gen II SBC.
I would like to be able to offer him an alternative option with an LS powe-plant with the Gen II we are pushing $16.000.00. My thought is What can be done with modern LS technology for the same monies.
I would like a bottom end durability cushion built in for possibilities of a 250 shot of spray
Perimeters are an aftermarket block (unless A factory block is more desirable), single carburetor, under 3500 rpm stall, and going in a 3300 lb G-Body
I would like to be able to offer him an alternative option with an LS powe-plant with the Gen II we are pushing $16.000.00. My thought is What can be done with modern LS technology for the same monies.
I would like a bottom end durability cushion built in for possibilities of a 250 shot of spray
Perimeters are an aftermarket block (unless A factory block is more desirable), single carburetor, under 3500 rpm stall, and going in a 3300 lb G-Body
#3
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Go to my last post use it as a reference I want 800 fwhp also NASCAR engine replica. Doing my own cam this time not that people like Pat G or Martin aren't the best, but I want too understand what goes into creating a cam and spec'ing it Myself.
I'll give Brad or Matt @ Comp Cams a call tomorrow.
I'll give Brad or Matt @ Comp Cams a call tomorrow.
#5
All motor means Without Boost or Spray so 800hp without spray. I just want the durability built in the bottom end for the potential of additional spray.
Are your files posted in this forum somewhere?
Also Lil John I'm leaning against a short sroke 8000+ rpm engine. To keep the power-band starting under 3500 rpm I think I will need longer stroke for a broad torque curve and the Hp curve to start climbing before 4200 rpm and to peaking in the 6500 rpm range.
Are your files posted in this forum somewhere?
Also Lil John I'm leaning against a short sroke 8000+ rpm engine. To keep the power-band starting under 3500 rpm I think I will need longer stroke for a broad torque curve and the Hp curve to start climbing before 4200 rpm and to peaking in the 6500 rpm range.
Last edited by gvx; 03-01-2015 at 10:51 AM.
#6
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Well a 454 Ls short block Ls7 heads and a cam with some nice lift could do it around 7200-7500 rpm. My 408 to get 800fwhp will need to be around 8 to 8200 to ensure I get the number I would like to see and hear. But 6500 rpm,you would need High compression and a cam with a Lot of lift.
There in my hard drive: there previous mag and engine builds on this site and others such as Yellow Bullet along with many other site builds. I use them as a Reference for builds or when helping others to get a ball park figure..
There in my hard drive: there previous mag and engine builds on this site and others such as Yellow Bullet along with many other site builds. I use them as a Reference for builds or when helping others to get a ball park figure..
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#9
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This is a quick one switch the heads and cam and use a Carb style intake. 800 HP easy with out going past 7500 rpm.
https://ls1tech.com/forums/generatio...ker-ready.html
I have every great engine build from this site:-)
https://ls1tech.com/forums/generatio...ker-ready.html
I have every great engine build from this site:-)
#10
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Yeah John B. I think I've looked over your records more than any other engine ever. Most don't know that I based my complete setup after yours with little brother parts such as Ls3 vs Ls7 heads so on and so on, ya'll get the point.
John B put down over 700rwhp.
John B put down over 700rwhp.
#12
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Yea I've spoken to him also. One of the person's who convinced me of going with the Super Vic style intake vs my Vic Jr. That particular build is one of the reasons for shooting for 800fwhp + the fact is I only like NASCAR (I Alway Wanted there old Hp numbers)because of the engines being used 800hp with simple parts it's the Blue-Print that most get lost on.
Last edited by lil john; 03-01-2015 at 11:37 AM.
#15
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LME did a 502ci RHS build a while back and made over 700hp with a FAST manifold. SAM did the same thing, but with a different block and OEM LS7 heads and intake manifold. Both were pump gas hydraulic roller combos.
Is a solid roller or race gas out of the question?
#16
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LSX IRON BLOCK W/434 CI (4.155 Bore X 4.0 Stroke)
with strength in bore for 250+ N2O
12.5:1 Comp
400+ CFM @ .600 AND STILL CLIMBING TO .700+
(maybe TFS LS7 heads worked by Chris Frank or
Tony Mamo) starts with a relatively small port 260CC compared to
Most of the others.
CAMMOTION Low Lash Solid Roller needs to Peak~ 7500 RPM
To reach 800 FWHP IMHO something like
~250/264 .680"/.660, LSA (determined by someone above my
Pay grade) LOL!
Just my .02
with strength in bore for 250+ N2O
12.5:1 Comp
400+ CFM @ .600 AND STILL CLIMBING TO .700+
(maybe TFS LS7 heads worked by Chris Frank or
Tony Mamo) starts with a relatively small port 260CC compared to
Most of the others.
CAMMOTION Low Lash Solid Roller needs to Peak~ 7500 RPM
To reach 800 FWHP IMHO something like
~250/264 .680"/.660, LSA (determined by someone above my
Pay grade) LOL!
Just my .02
#17
LSX IRON BLOCK W/434 CI (4.155 Bore X 4.0 Stroke)
with strength in bore for 250+ N2O
12.5:1 Comp
400+ CFM @ .600 AND STILL CLIMBING TO .700+
(maybe TFS LS7 heads worked by Chris Frank or
Tony Mamo) starts with a relatively small port 260CC compared to
Most of the others.
CAMMOTION Low Lash Solid Roller needs to Peak~ 7500 RPM
To reach 800 FWHP IMHO something like
~250/264 .680"/.660, LSA (determined by someone above my
Pay grade) LOL!
Just my .02
with strength in bore for 250+ N2O
12.5:1 Comp
400+ CFM @ .600 AND STILL CLIMBING TO .700+
(maybe TFS LS7 heads worked by Chris Frank or
Tony Mamo) starts with a relatively small port 260CC compared to
Most of the others.
CAMMOTION Low Lash Solid Roller needs to Peak~ 7500 RPM
To reach 800 FWHP IMHO something like
~250/264 .680"/.660, LSA (determined by someone above my
Pay grade) LOL!
Just my .02
Dart LS Next Cast Iron Block part# DRT31837211
Dart LS Next Cast Iron Block
4.125" Bore, Std. Deck (9.240")
http://www.competitionproducts.com/D.../#.VPOAg-FWIf8
#18
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http://www.theengineshop.com/product...ron-block.html
That was my post. The dart next uses ls crankshaft.the world block does not. Above it the block i was reffering to.
That was my post. The dart next uses ls crankshaft.the world block does not. Above it the block i was reffering to.
#19
Whats a good head intake combo for a 4.155 Bore X 4.0 Stroke combo for under the 7000 rpm high HP goal. I am open to a higher rpm range with regards that I want it to launch under 3500 rpm. even tho I anticipate that this wide of a power-band will be difficult to achieve at this horsepower level
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Whats a good head intake combo for a 4.155 Bore X 4.0 Stroke combo for under the 7000 rpm high HP goal. I am open to a higher rpm range with regards that I want it to launch under 3500 rpm. even tho I anticipate that this wide of a power-band will be difficult to achieve at this horsepower level
Banshee or RHS heads by Chris Frank
Mast 285cc or Mast 305cc
Intake:
Fast 102mm
Holley Mid-rise
Going to 7.5k RPM seems like the only way you'll hit that goal based on my experience. I am building a 7.5k RPM 454ci all-motor setup but mine is solid roller with zero regard to street manners.
Still haven't nailed down intake or heads.
Good luck!