Lets Build A Motor (On A Budget)

[CausinTrouble]

Ok guys im gonna build a motor for my Excalibur.
I want a good reliable 500+ hp motor for as little money as possible.

Here is what I have so far. I am using the heads (no money for better)
454 with 4 bolt mains
Cast internals (junk)
Set of 781 heads (stock)
Stainless Manifolds with Dry Pipes


What do you guys recomend for this motor ?

I would also consider buying used parts if they had low hours.
Does anyone have any parts laying around they wanna donate

[pkspx]

Gellner had me dialed in with a 454 550hp, dart heads, stock rods, JE 9.6:1 compression, dart intake manifold, CMI headers, Cranes Cams rockers, lifters and cam, blue printed and balanced.

I have a cam and intake manifold from my 454 build with 480hp..... send me a PM, and we care talk some more about it.

[Griff]

Ok guys im gonna build a motor for my Excalibur.
I want a good reliable 500+ hp motor for as little money as possible.

Here is what I have so far. I am using the heads (no money for better)
454 with 4 bolt mains
Cast internals (junk)
Set of 781 heads (stock)
Stainless Manifolds with Dry Pipes


What do you guys recomend for this motor ?

:

Not that many options to make 500+ with cast internals since you shouldn't spin it much more than 5000rpms. Port heads, up compression to about 9.5, bigger cam, Air Gap intake, 800cfm carb. Probably still can't make 500 hp unless you spin up to 5500rpms.

[boater4life]

Ok guys im gonna build a motor for my Excalibur.
I want a good reliable 500+ hp motor for as little money as possible.

Here is what I have so far. I am using the heads (no money for better)
454 with 4 bolt mains
Cast internals (junk)
Set of 781 heads (stock)
Stainless Manifolds with Dry Pipes


What do you guys recomend for this motor ?

I would also consider buying used parts if they had low hours.
Does anyone have any parts laying around they wanna donate

-----------------------------------------------------------------------
Here is a couple of econo build lists for 454 that is nothing too special but worked well. Probably recognize some of the names I pulled it a while back from a thread on another site. Come in usefull once in a while.

Here's the Federal Mogul parts list for SuperV's 454+.030, which dyno'd at Tom Earhart's shop at 505 chp@5500;

L2465F+.030 forged pistons, 9.6:1 c/r
E233K+.030 rings
4400M main brgs
3190CP rod brgs
1404 cam brgs
381-8009 brass core plug set
KT3-171S timing chain set
CS1140R cam, 234intake/244exhaust@.050, .553/.578 lift
HT817 lifters
VS1581 valve springs
VSR7015 retainers
VK338R keepers
V-8007R intake valves, 2.19 dia.
V-8006R exhaust valves, 1.90 dia.
Merlin oval-port heads, Performer intakes, Holley carburation

Dyno's engines have H693CP+.030 hypereutectic pistons, 9.5:1. All other components are as listed above, including cams.

Waterfoul's engine has H426CP+ .060 hypereutectics, 8.6:1 and a slightly smaller cam, CS1139R, 224/232@.050, .527/.553 lift, GM rectangular-port heads, GM aluminum intake, Holley carb, all other components are the same.

BGIII's engine also has H426CP hypereutectics, he used an Ultradyne cam(virtually the same #'s as the CS1139R), GM rectangle-port heads, GM aluminum intake, Q-jet carb. All other components as listed.


500hp from a 454 is not out of range.
Good luck with your build and keep us posted.

[CausinTrouble]

I plan on buying better rods and crank..Around 5500 is the goal.

pk.... What intake do you have ?

[rockfish71]

Brand new 502
1. tack welded oil pick up
2. new arp oil pump shaft
3. made mods to the oil system
4. ultradyne roller cam shaft 228/236 .353 lift @50 .601 in/ex lift with 1.7 rocker with arp bolts
5. new valve springs plus 10 degree locks and retainers
6. 7/16 rocker studs, 7/16 guide plates plus
7.GM roller rockers
8. felpro mls head gaskets
9. arp head bolts
10. air gap manifold and felpro intake gaskets
11. eddie marine exhaust system

[PatriYacht]

I would put an Eagle 1/4in. stroker forged rotating assy. in it. What heads will be going on it?

[Trim'd Up]

I have a nice GM forged crank and rods if your interested. The rods are resized with ARP bolts already installed and the crank has not been turned but has been polished. It would be a step in the right direction.

[CausinTrouble]

-----------------------------------------------------------------------
Here is a couple of econo build lists for 454 that is nothing too special but worked well. Probably recognize some of the names I pulled it a while back from a thread on another site. Come in usefull once in a while.

Here's the Federal Mogul parts list for SuperV's 454+.030, which dyno'd at Tom Earhart's shop at 505 chp@5500;

L2465F+.030 forged pistons, 9.6:1 c/r
E233K+.030 rings
4400M main brgs
3190CP rod brgs
1404 cam brgs
381-8009 brass core plug set
KT3-171S timing chain set
CS1140R cam, 234intake/244exhaust@.050, .553/.578 lift
HT817 lifters
VS1581 valve springs
VSR7015 retainers
VK338R keepers
V-8007R intake valves, 2.19 dia.
V-8006R exhaust valves, 1.90 dia.
Merlin oval-port heads, Performer intakes, Holley carburation

Dyno's engines have H693CP+.030 hypereutectic pistons, 9.5:1. All other components are as listed above, including cams.

Waterfoul's engine has H426CP+ .060 hypereutectics, 8.6:1 and a slightly smaller cam, CS1139R, 224/232@.050, .527/.553 lift, GM rectangular-port heads, GM aluminum intake, Holley carb, all other components are the same.

BGIII's engine also has H426CP hypereutectics, he used an Ultradyne cam(virtually the same #'s as the CS1139R), GM rectangle-port heads, GM aluminum intake, Q-jet carb. All other components as listed.


500hp from a 454 is not out of range.
Good luck with your build and keep us posted.

GREAT INFO
Thanks

[CausinTrouble]

I have a nice GM forged crank and rods if your interested. The rods are resized with ARP bolts already installed and the crank has not been turned but has been polished. It would be a step in the right direction.

PM me a price please

[Formula 382 sr-1]

I have two sets of heads off Hp500's (carb) and one cam shaft with lifters, I do not know how many Hours are on the Lifters .

[Formula 382 sr-1]

I also have two sets of rods out of HP500's just reconditioned with new ARP2000 bolt's.

[Griff]

I plan on buying better rods and crank..Around 5500 is the goal.

pk.... What intake do you have ?

If you're going to that, then buy a complete rotating assembly and stroke it to a 496ci. You should be able to make 550hp pretty easily.

[Mrhorsepower1]

Check your PM.

[Offshoredrillin]

I also have 2 sets of heads that are from a 500efi, one set is fresh the other with 45 hours. 850/45 hr heads 950/fresh. pm me if they might help ya. they have been milled a bit to raise compression.

[Blue Thunder]

Ok guys im gonna build a motor for my Excalibur.
I want a good reliable 500+ hp motor for as little money as possible.

Here is what I have so far. I am using the heads (no money for better)
454 with 4 bolt mains
Cast internals (junk)
Set of 781 heads (stock)
Stainless Manifolds with Dry Pipes


What do you guys recomend for this motor ?

I would also consider buying used parts if they had low hours.
Does anyone have any parts laying around they wanna donate

If the shortblock is healthy and ready to run I would consider bolting on a small blower. 525sc takeoffs can be found cheap. Use good head gaskets and exhaust valves and she will please you immensly. Set it up with a tight quench (.040ish), large top ring end gaps and use arp head bolts. The weak point in your shortblock would be the 3/8" rod bolts, if you can change them to arps it would help. If not, I wouldn't be afraid of that either.

There are a lot of people around that would not agree your cast parts are junk in a realativly low rpm marine application. A 7500rpm 1/4 mile engine, not so good.