383 SBC Street/Pro-Touring/Resto-Mod

[Oakesters]

I have a Gen 1 sbc 350 . I want to make a 383 stroker engine for my 1967 camaro. I have a muncie m20 and a ford 9inch rear end going in as well. Plans for the camaro are going to be a fun street car ,that can go autocrossing ,draging, and driving around town . Plans are as follow....
Eagle Specialty Products B13404E030 10 to 1 , RHS 200cc heads pro action alum, 750 carb,rpm mainfold and a comp cams roller camshaft, looking for 450+ hp. any help or input would be great on my combo. thanks

Eagle kit spec,
Description:
Eagle Budget performance kits are designed for the avid performance enthusiasts looking to upgrade there stock rotating assembly. Kits come fully balanced and are ready for installation.

Kit Details
•New Eagle Cast Steel Crankshaft, 2 piece rear main seal early model blocks, Pre 1987
•New Eagle 5140 Steel I beam connecting rods , Rods are bushed
•Speed Pro hypereutectic pistons
•Clevite 77 Performance rod and main bearing set
•Perfect circle moly face piston rings
•Rotating assembly is fully balanced
•New flexplate and harmonic balancer will be included

[Oakesters]

Xtreme Energy™ XR282HR or Xtreme Energy™ XR288HR orXtreme Energy™ XR294HR
Im up in the air about these cams thanks- OAkesters

[Scott Parkhurst]

This is the story about my engine:
http://www.popularhotrodding.com/enginemasters/articles/smallblockshootout/0503em_small_block_engine_build/index.html

I've done all the things you're talking about. It's still in my wagon.

The specs are similar to yours, but different in some important ways. Look at the specs on the solid roller.

It made 100 hp more than you're hoping for. Maybe it could help you out a bit in your quest.

[Oakesters]

Did you use Lunati EA015-383-6 - Lunati Sledgehammer Engine Assemblies ? Thanks for the info
Oakesters

[Oakesters]

RHS 200CC VS 180CC AFR ?? Thanks

[Scott Parkhurst]

I did- and I know Lunati no longer makes the exact forged 6-inch rod I used.

The heads I have are AFR 210cc CNC-finished versions. I don't think it said 180cc anywhere in the story, did it? I hope not.

Anyway- the heads I have are the older versions of the AFR 210. The newer versions are better, and their new 195cc CNC-finished head flows similarly to what my 210s do. I feel the key here is the CNC finishing, since it assures you the ports are identical from cylinder to cylinder- and of course the chambers will be too. That's pretty critical and tough to pull off by hand grinding. The port and chamber shapes are also ideal. You hopefully noticed that I coated everything. Ports, chambers, valve heads- the works. That's a big deal when you're trying to control temperatures in a street/road race engine with aluminum heads.

The RHS heads you're looking at are really good, but make sure you get CNC-finished versions if you're committed to them. A 383 can use a 210cc port at 6,500 rpm with a big cam. I promise you that.

I used a 680cfm Demon carb in that story. It was a great carb but had no choke and the engine still had over an inch of vacuum at 6,500. When Demon went out of business, I decided to change carbs. I now have a Holley Ultra Double Pumper 750 cfm carb with a choke. The car is a lot easier to start and feels like it has more power. I've also added Doug's Tri-Y headers, which may also be contributing to the more powerful feeling.

Overall, the combination is a killer. With 10:1 compression, good CNC-finished 210cc heads, and that fat solid roller, you will make serious power. Be prepared to upgrade everything behind the engine, because it will break stuff if you don't.

[Oakesters]

Thats just it , i dont want to make too much hp as i will start to break stuff , i have a m20 and there rated to 500 , so i was thinking RHS Pro Action Aluminum Cylinder Head, Assembled, 64cc Chamber, 200cc Runner, Straight Plug, .560 Max Lift, Chevy (1 Head) with SB Chevy 262-400 Extreme Energy Retro-Fit Hydraulic Roller Camshaft - .520" Int .540" Exh lift (2500-6000)withEagle Street/Strip Kit, SB Chevy 350/383, 3.750" Eagle Crank, 5.7" Eagle Rods, 9.6:1 KB Pistons? thanks for the help

[61ragtop]

I would step up to forged pistons, I have a similar set up here it is........


ENGINE
-383 stroker
-Chevy 350 bored 30 over and stroked to 383ci
-Scat crank 3.75 Stroke Cast 9000 series
-Scat 5.7 forged I beam rods with 7/16 arp cap screws
-Forged Flat top Probe Sportsman Race Series Pistons
-Comp Cams Xtreme Energy™ XR282HR Duration-Intake 230deg Exhaust 236deg @ .050 / Lift Int .510 Exh .520 and 110 lobe separation
-Air Flow Research 195cc Heads 74cc chambers
-9.7:1 compression
-Headman Block Hugger Headers
-Holley 110 gph Fuel Pump
-Speed Demon 750cfm Carb Vacume secondaries
-Polished Air gap Intake
-Edelbrock aluminium water pump
-MSD Plug Wires
-All Bolts Are ARP
-Edelbrock double roller timing set
-Comp cams roller lifters
-Crane cams energizer roller 1.5 rockers
-Full Mandrel bent Flowmaster American Thunder exhaust With 50 series deltaflow mufflers
-700r4 tranny
-Edge Racing 9" 3200 rpm converter with lock up
-9 inch ford rear end
-Center Section With Motive 3.89 Gears And Auburn Pro series limited slip

And the engine dyno specs....

Intake center line 105 1/2
jets 76 front 85 rear
vac sec spring short yellow
timing 35 deg
RPM----HP---TQ---A/F--Vol Eff%

3900 - 328 - 442 - 13.3 - 97
4000 - 340 - 447 - 14.0 - 97
4100 - 356 - 456 - 14.2 - 97.3
4200 - 370 - 462 - 14.0 - 97.5
4300 - 381 - 465 - 13.9 - 97.5
4400 - 390 - 465 - 13.9 - 97.4
4500 - 397 - 463 - 13.8 - 97.4
4600 - 404 - 461 - 13.7 - 97.2
4700 - 410 - 458 - 13.8 - 97.1
4800 - 416 - 465 - 13.8 - 96.9
4900 - 422 - 452 - 13.8 - 96.7
5000 - 427 - 448 - 13.8 - 96.3
5100 - 430 - 443 - 13.8 - 95.8
5200 - 433 - 437 - 13.9 - 95.2
5300 - 435 - 431 - 13.9 - 94.9
5400 - 436 - 424 - 13.8 - 94.6
5500 - 437 - 418 - 13.9 - 94.3
5600 - 439 - 411 - 14.0 - 94.0
5700 - 440 - 406 - 13.9 - 93.5
5800 - 442 - 400 - 13.9 - 92.8
5900 - 442 - 393 - 14.0 - 92.1
6000 - 440 - 385 - 14.0 - 91.5

I have since upgraded to the New AFR Eliminator 195cc heads due to an issue I had and had them milled to 72cc chambers from 75cc to bump from 9.7 to 10.2:1 compression. They claim the head change with out the compression bump is worth a solid 60 HP and 60 TQ plus 10 HP+TQ with the compression bump. Added to my dyno #'s thats 510 HP and 530TQ it should be putting out now.

[Oakesters]

Why forged pistons? im not going to use nos , only a na street motor to 6500 rpm max -
thanks , biggest thing now is what bottom end ? -Oakesters

[Oakesters]

From AFR , was thinking of this too.
Horsepower:480 HP
Engine:383ci
Heads:AFR 180cc Street Cylinder Heads
Compression:9 to 5
Carburetor:Holley 0-4779 750 cfm
Ignition:MSD Distributor 36° Timing
Cam:Comp Cams 12-432-8 Hyd Roller Cam
Exhaust:1 3/4 headers
Fuel:93 pump gas

[61ragtop]

Why forged pistons? im not going to use nos , only a na street motor to 6500 rpm max -
thanks , biggest thing now is what bottom end ? -Oakesters

I just used forged incase I wanted future upgrades like Nos. I guess if there are no plans for Nos or forced induction at all there is no issue. Just keep in mind there is never enough HP, once you get the power bug you always want more!! lol

[Oakesters]

Been thinking between these two cams , and its a 4 speed if that helps-thanks
Xtreme Energy™ XR282HR
Great for Street Machines, Mildly Rough Idle
Part Number: 12-432-8
or
Xtreme Energy™ XR288HR: Street/Strip Applications
Part Number: 12-433-8