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Discussion Starter #1
I'm putting together a little bracket motor, nothing too fancy. Maybe 500 hp on the high side.

It currently has factory rods and KB hypereutectic pistons and I'm thinking of upgrading some. What would be a good rod and piston combo that's cheap but decent? I'd even be willing to use used stuff if anyone has old rods that are still good.

This is a budget build, but I don't want to break a piston and kill the whole thing
 

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Discussion Starter #2
And what's peoples opinion of hypereutectic pistons? I've never run anything with them, just heard horror stories..
 

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I have some in mine. I'll upgrade later though mine was just a budget built 383 I did in high school. Been good to me so far. First engine I've ever built.
 

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Those pistons are fine with a 6" rod, they are known to break the skirts with a shorter rod. But a good combo would be to use the stock crank, good forged rod, domed piston around 12.5:1 compression, with a 2.05/1.60 valved head around a 210/215cc intake runner and a roller cam.


With all the proper machine work and porting to the heads and the block and rotating assembely you should be able to make 500 horsepower pretty easy.
 

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If you're looking at changing out rods and pistons spend a couple hundred dollars more and go with a Scat 9000 stroker kit. A nice 383 can be done on a budget but still very reliable.

I actually have a 12-1 aluminum headed 383 long block for sale $2800 bucks. Very little use.
 

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If you're looking at changing out rods and pistons spend a couple hundred dollars more and go with a Scat 9000 stroker kit. A nice 383 can be done on a budget but still very reliable.

I actually have a 12-1 aluminum headed 383 long block for sale $2800 bucks. Very little use.
PM me build specs.
 

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All you here is their junk, then someone lays down 1200hp on stock LS ones.
 

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I'll post up my build. I'm not close to 500hp and only run 11.79, BUT I win races. I'm only 17 and so far I've placed 4th last year at the Division 3 Bracket Finals, I've won 11(+/-) points events, and I've won a street car index event for cash. Not looking to hijack or brag but just showing that it's consistent.

My Build:
Stock block 355
Stock Crank
Stock Rod
Forged Flat top pistons
11.2: Compression
480 lift, 224 [email protected] hydaulic cam
Ported Dart Pro 1 aluminum heads (2.02/1.60s with 200cc intake runners)
1.55 Roller rockers
Ported Victor Junior Intake
2" carb spacer
750 Holley.


Its detuned right now so I can run my high school class, at 34* timing I can dial a 12.08 and run right at 12.08-12.11.
 

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we have over here a 350 ci jet boat class. Most use hyper pistons, scat 9000 series cranks are now allowed & so too are aftermarket rods. these engines, make ~430 odd HP & run for about 50-90 secs per lap @ full noise, & are basically pretty reliable.
 

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Discussion Starter #12
I'll post up my build. I'm not close to 500hp and only run 11.79, BUT I win races. I'm only 17 and so far I've placed 4th last year at the Division 3 Bracket Finals, I've won 11(+/-) points events, and I've won a street car index event for cash. Not looking to hijack or brag but just showing that it's consistent.

My Build:
Stock block 355
Stock Crank
Stock Rod
Forged Flat top pistons
11.2: Compression
480 lift, 224 [email protected] hydaulic cam
Ported Dart Pro 1 aluminum heads (2.02/1.60s with 200cc intake runners)
1.55 Roller rockers
Ported Victor Junior Intake
2" carb spacer
750 Holley.


Its detuned right now so I can run my high school class, at 34* timing I can dial a 12.08 and run right at 12.08-12.11.
I'm really not concerned with how much power it makes, just so long as it stays together. This motor came with a dragster I bought and I know it ran mid 9's.

Its a:
Stock block 355
Stock forged crank
4 bolt main
291 chevy head with 2.02 1.60 stainless valves
567 lift in 540 lift ex (don't remember duration)
KB hyper pistons
Stock "pink" rods
Team G single plane intake
Heads have a little bit of "port work" mainly just debured

The motor is going in a vega that will weigh about 2350-2400 pounds with driver.

If it goes low 10's I'd be happy, high 10's would be fine also. If it went 9's I'd be slowing it down anyway
 

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make sure all the parts are free of stress cracks, make sure balance is good, piston to bore is correct along with ring gap, keep the rpm below 6800 and keep it away from detonation and you will be good.
 

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Discussion Starter #16
make sure all the parts are free of stress cracks, make sure balance is good, piston to bore is correct along with ring gap, keep the rpm below 6800 and keep it away from detonation and you will be good.
That's pretty much the plan, balance is being checked right now. Figure 6500 max since the heads probably wouldn't keep up after that anyway.
 

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I'll post up my build. I'm not close to 500hp and only run 11.79, BUT I win races. I'm only 17 and so far I've placed 4th last year at the Division 3 Bracket Finals, I've won 11(+/-) points events, and I've won a street car index event for cash. Not looking to hijack or brag but just showing that it's consistent.

My Build:
Stock block 355
Stock Crank
Stock Rod
Forged Flat top pistons
11.2: Compression
480 lift, 224 [email protected] hydaulic cam
Ported Dart Pro 1 aluminum heads (2.02/1.60s with 200cc intake runners)
1.55 Roller rockers
Ported Victor Junior Intake
2" carb spacer
750 Holley.


Its detuned right now so I can run my high school class, at 34* timing I can dial a 12.08 and run right at 12.08-12.11.
Runs good. Little more camshaft and that thing would go 11.20s-11.30s pretty easy!
 

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5,667 Posts
my motor runs on pump gas

Consistent 11.50s on motor and 10.50s on a 175 shot.

355 sbc
4 bolt block
Gmpp steel crank
Scat hbeam rods
20 year old edelbrock perf. Rpm heads
Crane hyd roller 234/242 @ .050 .539/.549 lift
pro products hurricane manifold
quick fuel 850 carb

I drive it to the track
 

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2,366 Posts
10.98 @123mph 1.48 60' footbrake on 275's

360" SBC .060" over 3.48"stroke
Gasket matched Brodix IK 200's &
Rpm air gap Wilson 2" spacer 750 HP
11:1 comp 254/260- 632/632 lift 106 sep comp solid roller
Pump gas 3150 race weight.
 

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818 Posts
Runs good. Little more camshaft and that thing would go 11.20s-11.30s pretty easy!
Yep! A good solid roller with a lot less lobe seperation and it would pick up a bunch. It has a 110 lobe'd cam now for the old nitrous set up.
 
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