Set up 7-800hp

-

68 barracuda 68

Well-Known Member
Joined
Sep 23, 2018
Messages
71
Reaction score
8
Location
Norway
im thinking on getting a new engine build, not sure what will be the best way. Smallblock/bigblock? i prefer the smallblock
What i want is 7-800 hp on pumpgas with gas shot or blower on it, anyone have a good set up? blown hemi?
 
Stroked big block. Low deck if going in an a body.
 
While making a 800+ hp small block with a blower is easy part wise, you’ll need to IMO use a Ritter block to start with. You might as well start with a super solid foundation.

A big block would be easier since parts for them are , well, simply bigger to handle more HP but also more plentiful in choices with better abilities to achieve the goal.
 
While making a 800+ hp small block with a blower is easy part wise, you’ll need to IMO use a Ritter block to start with. You might as well start with a super solid foundation.

A big block would be easier since parts for them are , well, simply bigger to handle more HP but also more plentiful in choices with better abilities to achieve the goal.
Yes , dont know jet what i want, it will be a full race engine. Also saw there are rp5? Engine, any experience with that? Have a x blokk 354 also with trickflow heads avalible
 
No experience in the R5P7 engines.

Stroke the X block and super charge it with the TF heads. (If you actually have those heads) If you don’t have the trick flow heads, look to the Victors. That’s your best possible route.
 
Yes , dont know jet what i want, it will be a full race engine. Also saw there are rp5? Engine, any experience with that? Have a x blokk 354 also with trickflow heads avalible


Easy to make big power with r5p7 deal, abd they can be had quite cheap if you look around.
A buddy bought one( and it was restrictor plate motor)
Was barely 12 to 1 and had a dinky 248/258 cam in it. Heads are super good, his went around 400 cfm
Tossed it in a 68 Dart with a 904 and went 9.40’s at 143 ish.
They can be way more stout than his was
 
Last edited:
I would either do a B wedge or Gen3, with one or two turbos depending on what you're doing with it.
 
this is what you seek. plug n play 707 SC! :)

HELLCAT-TURNKEY-31.jpg
 
And they can ship it anywhere i believe.
Who is they? and how much?
If the coin is available , why not a gen 2 hemi, look what they are producing w/ a blower on them !
While ur at it , do all aluminum !
Maybe a 1000h.p. crate engine gen 3, for about the same $ "roughly" and less h.p.-----
 
Okay, so I'm a little bit bored this morning. I'll list this and go back to work.

Andy F's 470 would do it and is a real quality build. This 451 is more backyard stuff. But still, seems like this little normally aspirated 451 would meet the horsepower demands.

This was in 2010.

1974 model year 400 block, stock main caps and ARP main studs
Factory 440 forged crank cut to 400 main size and .125" in radius cut from counter weights
Scat H-beam rods
Ross forged pistons with standard 6.6cc flycut
Ported Edelbrock 440 RPM cylinder heads, 2.25/1.81 valves, 349 cfm @ .800" lift
11.7:1 compression on 91 octane pump gas
Erson custom solid roller 276/280 @ .050, .816"/.816" lift with 1.6 Harland Sharp rocker arms
Cloyes 9-keyway 3-bolt timing set
829-16 Comp Cams solid roller lifters
Pro-Systems XC 1140 cfm Dominator
HVH 2" Super Sucker 4 into 1 spacer
Indy single plane
Mancini electric water pump and factory cast iron housing
Factory 4-qt oil pan, factory 3/8" pick-up, factory windage tray and a custom crank scraper. 75 psi @ 3000 rpm, 78 @ 7400

RPM......................TQ..........................HP
3500...................503........................335
4000...................533........................415
4500...................555........................476
5000...................584........................556
5500...................571........................596
6000...................599........................694
6100...................604........................701 peak torque
6500...................590........................730
7000...................575........................767
7100...................571........................773 peak horsepower
7200...................563........................771

40 plus dyno runs in this configuration and nearly every pull over 7,000 rpm was 770+ HP. Best ever was 787 HP @ 7,200 rpm.

I guess if you wanted to boost it you could lower the compression, change the cam and valve springs, throw 16-17 lbs at it, make over a 1000 hp and pick the pieces of main caps and crankshaft out of the asphalt.
 
Last edited:
Boost, boost, boost! We don't need no stinking boost! But if you want it, this same short block at 9.7:1 compression, with a much smaller solid roller and ported 906 iron heads was making 528 RWHP when the chassis dyno operator begged me to let him put a Pro-Charger on it. He said with 26-28 lbs of boost he would get us 1,500 RWHP. Oh, and even smaller pieces of main caps and crankshaft I suppose.
 
not sure jet what to do, im interrestted in the r5p7 engine, try to find information on that..? does anyone have experience with that engine?
 
not sure jet what to do, im interrestted in the r5p7 engine, try to find information on that..? does anyone have experience with that engine?
The only things I think I know about those motors are you will need and adapter to connect it to any transmission (727, 904, power glide, etc) and pretty much non of your small block parts will work with it....you kinda have to start from scratch.

There is a guy over on Moparts that knows a lot about these motors, I think his name is Leon.
 
Who is they? and how much?
If the coin is available , why not a gen 2 hemi, look what they are producing w/ a blower on them !
While ur at it , do all aluminum !
Maybe a 1000h.p. crate engine gen 3, for about the same $ "roughly" and less h.p.-----
Cleveland performance.
 
This was in 2010.

1974 model year 400 block, stock main caps and ARP main studs
Factory 440 forged crank cut to 400 main size and .125" in radius cut from counter weights
Scat H-beam rods
Ross forged pistons with standard 6.6cc flycut
Ported Edelbrock 440 RPM cylinder heads, 2.25/1.81 valves, 349 cfm @ .800" lift
11.7:1 compression on 91 octane pump gas
Erson custom solid roller 276/280 @ .050, .816"/.816" lift with 1.6 Harland Sharp rocker arms
Cloyes 9-keyway 3-bolt timing set
829-16 Comp Cams solid roller lifters
Pro-Systems XC 1140 cfm Dominator
HVH 2" Super Sucker 4 into 1 spacer
Indy single plane
Mancini electric water pump and factory cast iron housing
Factory 4-qt oil pan, factory 3/8" pick-up, factory windage tray and a custom crank scraper. 75 psi @ 3000 rpm, 78 @
Very simular to my 451 build. But heads are Brodix B1/BS. Small chambered so higher comp. Running E'85 fuel. And not as deep of a cam. Same Ross flat pistons. BME aluminum rods.

Never dynoed. But I'm guessing about 650 RWHP. Pushes a 3000lb Duster to low 10s.
 
Boost, boost, boost! We don't need no stinking boost! But if you want it, this same short block at 9.7:1 compression, with a much smaller solid roller and ported 906 iron heads was making 528 RWHP when the chassis dyno operator begged me to let him put a Pro-Charger on it. He said with 26-28 lbs of boost he would get us 1,500 RWHP. Oh, and even smaller pieces of main caps and crankshaft I suppose.
LOL
 
Now i sold my 408 and going to build a stroked 400-512, with brodix B1 heads, PG, will also getting it on 300 shot of gas, have no experience with gas shot, anyone have links or helpfull tricks and tips?
 
Now i sold my 408 and going to build a stroked 400-512, with brodix B1 heads, PG, will also getting it on 300 shot of gas, have no experience with gas shot, anyone have links or helpfull tricks and tips?
Use a timer for the NOS, don't make the mistake of making the mixture too rich! Call the manufacturer tech line often with your questions...
 
Now i sold my 408 and going to build a stroked 400-512, with brodix B1 heads, PG, will also getting it on 300 shot of gas, have no experience with gas shot, anyone have links or helpfull tricks and tips?
Make sure your rings are gapped for nitrous and use a good ignition system. Retard timing, cold plugs...by how much depends on how much you use. Do a lot of reading before using nitrous...don't do the old "pill it till you kill it, back it off one and run in it" thing.
 
-
Back
Top