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383 HEADS What size runners for STREET CAR
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383kelly
New User
| Posts: 8
| Joined: 08/11
Posted: 02/12/12
03:20 PM
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Iam ready to start the TOP END and just wondering 64cc HEADS or 72cc ? My block has a stock deck height 9.025 and my pistons are SPEED PRO H860 CP 30, -5cc. I do plan on buying new aluminum heads in March but I want to stay under 10.5 compression ratio. Scat Nodular Crank, Scat 4340 Ibeam Rods 5.7 and a Howards 488/508 CAM Hydralic flat tappet. The cars a 1986 monte SS with 200r4 trans and 10 bolt pos. with 3.73 also a 2600 stahl converter. Any Good input would deffinitley be appreaciated, THANKS CHP ! So do I go for the 64cc with higher compression or go with the 72cc heads and play it on the safer side? Please help with your two cents. Thanks 383Kelly
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skyeking
Addict
| Posts: 2248
| Joined: 08/09
Posted: 02/12/12
04:24 PM
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Hi there,
AFR or TFS 195s will do you fine.
Check valves etc..You won't go wrong with the USA Quality product..
If you keep the deck Height at about 15/1000" the 64cc heads should be O.K.
If in Doubt use a set of thicker head gaskets...
All the best with the project...Skyeking
skyeking
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Posted: 02/13/12
02:55 PM
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With the 64CC heads you will be around 10.5:1SCR and with the 72CC heads you will be around 9.7:1SCR.
Professional Hi-performance engine builder
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