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CV-1 Features
At the onset of design, the following list of features were specified:
*Applicable to both factory and aftermarket blocks *Use off the shelf valvetrain components *No shaft rockers required *No offset lifters *No pushrod "bulge" *Use
conventional Pontiac cam profiles *Standard round port exhaust (optional
convertible port) *Oil drainback options, minimizung windage *Retain full complement of accessory bolt holes (even A/C) *Provision for down nozzles in intake ports *Retain stock water crossover position for proper coolant circulation
Options
The CV-1 top end can produce dramatic power increases over the factory
head designs with no additional porting required. Therefore, it is mandatory to include quality components
in the short block to handle the increased power. Even better, enlist the services of a reputable performance engine
builder for an assembly that can be tailored to your needs.
**Some
applications could experience clearance issues with underhood accessories which may require modification**
The following five options must be specified when ordering a
set of CV-1 cylinder heads for your traditional Pontiac powered vehicle. There are no extra charges for options except where
noted:
1. Small or large combustion
chamber volume- 65cc, 81cc or 92cc2. Large (285cc) or head porter's (215cc)
intake port size 3. Standard round port or convertible port exhaust (see
below for details)
4. Standard or offset rocker. The latter comes with pushrod
scallops minimized for max porting
5. Water jacketed or solid dry head
(Extra charge- see pricing)
The 285cc intake port is intended
for 440-540ci performance applications with matching cam and gearing. The 215cc version can be used with 389-400ci mild performance
applications out of the box, or custom tailored to specific builds when correctly ported. When ordering please specify the answers to
these options and fax or email it with your name, business shipping address, method of payment, and daytime phone
#.
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Convertible Exhaust w/ flanges
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Convertible Exhaust side view
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Parts List
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Manley #11868-8 2.25" dia 11/32" stem 5.49" length- 1.9" spring ht.
Manley #11878-8 2.30" dia 11/32" stem 5.61" length- 2.0" spring ht. |
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Manley #11353-8 1.66" dia 11/32" stem 5.23" length 1.9"-spring ht. SI #1600SG 1.73" dia
11/32" stem 5.35" length 2.0"-spring ht.
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Hardened, 5/16" or 3/8" dia; Int 9.45"-9.75" length Exh 9.60"-9.90"
5/16" or 3/8" guideplates
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Rocker arms & accessories
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BBC roller rockers **LESS THAN 1.60" OVERALL WIDTH** Rocker shafts: Yella
Terra #YT-6317 BBC rockers Parts for short valves: (16)#YT-6235 (16)#YT-6088 IEPG (601)693-8282 Charlie T&D
machine: Sheldon (775) 884-2292
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VC-1 solid or transparent top or billet fab Fel Pro 1615 (slightly
modified)
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Any head gaskets (Notch for exh pushrods except Titan and Hussey) ARP 1/2" studs: (8)5.0" (6)5.25"
(6) 3.25" Luhn Performance (414) 762-2220 |
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Most manufacturers (call for details) |
As cast flow figures on Superflow SF-600 flowbench. 4.15" bore; 2.25" /
1.66" valves.*Bowl blended only; values may vary on different test equipment*
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