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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year
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1969 Mustang
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Topic:
What came first, Block or heads and intake?
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Topic: What came first, Block or heads and intake? (Read 903 times)
13Outlaw
Full Member
Posts: 123
What came first, Block or heads and intake?
«
on:
April 28, 2015, 07:05:08 PM »
Just curious if there was a sequence, my 428CJ is date coded with 8L Block and 8M heads and intake, so Nov-Dec. A motor I am about to buy is 8L Block and 8K heads and intake, so Nov and Oct. From what I'm told they are both original engines.
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1969 Mach 1 R-Code 4-Speed (Dearborn built Jan 69)
1992 GT 5.0 5-Speed
2003 Cobra
2013 Shelby GT500
sportyworty
Full Member
Posts: 193
Re: What came first, Block or heads and intake?
«
Reply #1 on:
April 28, 2015, 10:15:02 PM »
They may in fact both be original long block assemblies. The blocks and heads will have different batch dates and they can be cast before or after any given block selected for an assembly. There is no specific pattern of before or after. That being said if someone had a comprehensive list of batch dates a pattern may be detected. The problem with 69 is there were so many batches. For example in 1968 I could share that very often the heads preceded the blocks due to 6 or so March batch dates and scarcity of April therefore the majority of April/May cars have March dated heads.
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Brian Conway
Hero Member
Posts: 1623
Re: What came first, Block or heads and intake?
«
Reply #2 on:
April 28, 2015, 10:24:20 PM »
My block is 8H and so are the heads with a 9 day spread after. No intake but the bell housing w/dust shield and balancer are also 8H. Brian
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5RO9A GT 4 Spd Built 5/29/65
9TO2R SCJ 4 Spd Built 9/19/68
Owner Driver Mechanic
San Diego, Ca.
13Outlaw
Full Member
Posts: 123
Re: What came first, Block or heads and intake?
«
Reply #3 on:
April 28, 2015, 10:25:44 PM »
Awesome guys, thanks for the input!
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1969 Mach 1 R-Code 4-Speed (Dearborn built Jan 69)
1992 GT 5.0 5-Speed
2003 Cobra
2013 Shelby GT500
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ConcoursMustang Forums
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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year
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1969 Mustang
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Topic:
What came first, Block or heads and intake?