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hi, i have a frined who has yet to sign up to the site but he's building a 383 and needs alittle help...just got the block its A 4 BOLT BUT HAS YET TO DO ANYWORK OR BUY ANY PARTS YET.. he's looking for at around 500hp on pump gas. maybe no more than 10.5:1 cr.. budgets around $5000 - $6500 for the motor.. is 500hp asking to much??.. he's gonna run all forged n balanced intenals he just wants alil help with a direction or combo to look into from the experts on the site...
 

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Build a flat top piston bottom end, get the compression ratio where you want
it with the volume of the combustion chamber. Buy a good CNC ported head
or something professional ported with a finished intake runner size in the
195 - 200 cc range. Get a good cam grinder to spec the camshaft. 500 - 550
HP no problem.
 

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Tonkaboyrich496 said:
hi, i have a frined who has yet to sign up to the site but he's building a 383 and needs alittle help...just got the block its A 4 BOLT BUT HAS YET TO DO ANYWORK OR BUY ANY PARTS YET.. he's looking for at around 500hp on pump gas. maybe no more than 10.5:1 cr.. budgets around $5000 - $6500 for the motor.. is 500hp asking to much??.. he's gonna run all forged n balanced intenals he just wants alil help with a direction or combo to look into from the experts on the site...
Bore the block 0.030" and cut the block decks for 9.008" block deck height.
Scat 9000 3.750" stroke crank, 350 mains.
Scat Pro Mod I-beam 5.7 rods.
Keith Black IC728 pistons, or equivalent.
http://kb-silvolite.com/forged.php?action=comp
Lunati retro-fit hydraulic roller cam, installed 2 degrees retarded.
http://www.lunatipower.com/CamSpecCard.aspx?partNumber=501A6LUN
http://www.lunatipower.com/Product.aspx?id=1859
Fel-Pro 1003 head gaskets.
AFR 195 Street Heads, 75cc chambers, 9.9:1 with the KB pistons.
http://www.airflowresearch.com/index.php?cPath=24_29
Edelbrock Performer RPM or Weiand Stealth intake manifold.
800 vacuum secondaries carb.
Equal-length, tuned headers, 1 3/4" primary tube diameter.

RPM HP TQ
2000 154 404
2500 196 411
3000 253 443
3500 321 482
4000 375 492
4500 434 507
5000 479 503
5500 510 487
6000 520 454
6500 500 403
Peak volumetric efficiency 100.9% @5000
Peak BMEP 199.7 @4500
 
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