Need dishedpstons for camel hump heads?
Thread Starter
Member
Joined: Sep 2002
Posts: 133
Likes: 0
From: Las Vegas
Car: 88 Z28
Engine: 408 Small Block
Transmission: TH350
Axle/Gears: 9" w/ 3.90's
Need dishedpstons for camel hump heads?
Doy uo have to use dished pistons to keep a fairly low compression ratio?
Senior Member
iTrader: (2)
Joined: Jan 2002
Posts: 925
Likes: 0
From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
it depends on what cc the heads are, what is the size of the combustion chamber of the heads you are using, and what size is the motor.
Senior Member
iTrader: (2)
Joined: Jan 2002
Posts: 925
Likes: 0
From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
well if they are 305 heads they have 58 cc chambers, and 350 heads normally have 64 cc chambers, with the 58cc heads with flat tops you will be at about 10:1 or more, with the 64cc heads with flat tops you will be at about 9.2 - 9.6 should be good for daily street use. im going with dished pistons with 58 cc heads, ill be around 9.5 compression, the 305 heads only have 1.80/1.50 valves but they can be machined for bigger tho
Kevin
Kevin
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
If they're really double-hump heads, they're 64cc nominal. Valve size doesn't matter.
350 motors that came from the factory with those heads had either flat-tops, for about 10.3:1 CR; or domed pisotns, for about 11.1:1.
Here's the casting mark:
350 motors that came from the factory with those heads had either flat-tops, for about 10.3:1 CR; or domed pisotns, for about 11.1:1.
Here's the casting mark:
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
Dec 10, 2019 07:07 PM
92projectcamaro
Engine/Drivetrain/Suspension Parts for Sale
11
Jan 18, 2016 08:00 AM
