Crazy idea for 318
Here's the 318 combo that's going into my Vintage Road Race '66 Dart:
I don't think it would run the number we're looking for here, with the current heads/intake. But it sure would with some ported LA-X heads and either an RPM Airgap, or single plane manifold.
'69 318 0.050" over bock, K1 rods, Scat 4340 crank, custom forged pistons (forget by whom right now), Hughes Engines main stud girdle.
EdleBrock LD4B Intake with a half inch open spacer and QFT road race 750
The heads are ported 1985 and up 318 ...302 castings with 1.94" intake and 1.6" exhaust valves by Ryan Johnson at Shady Dell speed shop in central PA; they flow 239.1 / 169.8 CFM @ 0.600" lift at 28 Inches of water (these will support no more than 497 HP). This motor previously made 330 HP at the wheels with the same cam & heads but less compression (was 10.1:1 now 10.25:1).
Comp Mech Roller Cam: Lift-0.630"/0.630"; [email protected]"-254*/260*; and LSA-107*.
Harland Sharp Rockers. Magnum rocker adjusters, push rods, and lifters (basically pressure oiling the push rod/rocker pivot point from the lifters and through the push rods like a Ford or Chevy small block).
I need to ask which headers where used on the engine dyno, in the car I have the TTI early A-body step headers, 3" to 2.5" X-Pipe and a pair of glass packs and 2.5" spiral baffles dumping in front of the rear wheels.
Milodon road race pan, Brad Penn 20w50 Oil, Oberg canister filter.
On 93 octane pump gas at the crank:
RPM HP FtLb
==== === ====
3100 216 365
3200 221 364
3300 229 364
3400 237 366
3500 246 370
3600 255 373
3700 265 377
3800 275 381
3900 285 383
4000 293 385
4100 302 387
4200 309 387
4300 316 387
4400 324 387
4500 332 387
4600 340 388
4700 348 390
4800 357 391
4900 364 391
5000 371 390
5100 378 389
5200 384 388
5300 391 387
5400 396 385
5500 401 383
5600 406 380
5700 411 379
5800 416 376
5900 419 373
6000 421 368
6100 422 364
6200 424 359
6300 425 354
6400 423 347
6500 421 340
6600 419 333
6700 416 326
6800 415 320
6900 414 315
7000 413 310
Graphically:
Some of the groups I run with require a 6800 RPM rev limit and some mandate iron heads. Also this motor was built to have fun, run safe relative lap times, and require minimal maintenance. The next motor will be similar, with better heads and a Performer RPM or LD340 intake. But that is years off at this point. I should have chassis dyno numbers some time next week.
Dave
Here's the 318 combo that's going into my Vintage Road Race '66 Dart:
I don't think it would run the number we're looking for here, with the current heads/intake. But it sure would with some ported LA-X heads and either an RPM Airgap, or single plane manifold.
'69 318 0.050" over bock, K1 rods, Scat 4340 crank, custom forged pistons (forget by whom right now), Hughes Engines main stud girdle.
EdleBrock LD4B Intake with a half inch open spacer and QFT road race 750
The heads are ported 1985 and up 318 ...302 castings with 1.94" intake and 1.6" exhaust valves by Ryan Johnson at Shady Dell speed shop in central PA; they flow 239.1 / 169.8 CFM @ 0.600" lift at 28 Inches of water (these will support no more than 497 HP). This motor previously made 330 HP at the wheels with the same cam & heads but less compression (was 10.1:1 now 10.25:1).
Comp Mech Roller Cam: Lift-0.630"/0.630"; [email protected]"-254*/260*; and LSA-107*.
Harland Sharp Rockers. Magnum rocker adjusters, push rods, and lifters (basically pressure oiling the push rod/rocker pivot point from the lifters and through the push rods like a Ford or Chevy small block).
I need to ask which headers where used on the engine dyno, in the car I have the TTI early A-body step headers, 3" to 2.5" X-Pipe and a pair of glass packs and 2.5" spiral baffles dumping in front of the rear wheels.
Milodon road race pan, Brad Penn 20w50 Oil, Oberg canister filter.
On 93 octane pump gas at the crank:
RPM HP FtLb
==== === ====
3100 216 365
3200 221 364
3300 229 364
3400 237 366
3500 246 370
3600 255 373
3700 265 377
3800 275 381
3900 285 383
4000 293 385
4100 302 387
4200 309 387
4300 316 387
4400 324 387
4500 332 387
4600 340 388
4700 348 390
4800 357 391
4900 364 391
5000 371 390
5100 378 389
5200 384 388
5300 391 387
5400 396 385
5500 401 383
5600 406 380
5700 411 379
5800 416 376
5900 419 373
6000 421 368
6100 422 364
6200 424 359
6300 425 354
6400 423 347
6500 421 340
6600 419 333
6700 416 326
6800 415 320
6900 414 315
7000 413 310
Graphically:
Some of the groups I run with require a 6800 RPM rev limit and some mandate iron heads. Also this motor was built to have fun, run safe relative lap times, and require minimal maintenance. The next motor will be similar, with better heads and a Performer RPM or LD340 intake. But that is years off at this point. I should have chassis dyno numbers some time next week.
Dave