Difference between 308 vs 253 Options

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Guest		#1 Posted : Monday, 14 April 2008 8:27:41 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Does any know if the bore size of a Holden V8 engine can be sustanciated between 308 vs 253 without pulling off the cylinder head? Just imagine there is no engine number and the displacement no on the side of the block has been ground-off.

Guest		#2 Posted : Monday, 14 April 2008 10:41:45 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Sorry what I meant was "substantiated"

JBM		#3 Posted : Monday, 14 April 2008 10:52:03 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/03/2006(UTC) Posts: 810 Thanks: 1 times Was thanked: 1 time(s) in 1 post(s)		No. The stock bore size and corresponding components are different one to the other. The 308 has a 4" bore and the 253 is 3.625". James You only have to be in front at the end of the race.
		You only have to be in front at the end of the race.
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vintageholden		#4 Posted : Tuesday, 15 April 2008 12:03:32 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 2/06/2006(UTC) Posts: 1,664		253 is 3.625 same as 202 holden
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Dr Terry		#5 Posted : Tuesday, 15 April 2008 12:07:26 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered Joined: 1/03/2005(UTC) Posts: 6,114 Thanks: 1 times Was thanked: 219 time(s) in 199 post(s)		Hi Guys. I think what SuSA9X wants to know is, how does he tell a 253 from a 308, without removing the head, if the engine number and casting number are not there. Dr Terry.
		If at first you don't succeed, just call it Version 1.0
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JBM		#6 Posted : Tuesday, 15 April 2008 12:20:33 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/03/2006(UTC) Posts: 810 Thanks: 1 times Was thanked: 1 time(s) in 1 post(s)		The motors are the same externally. However, an early 253 had a 2 barrel carb and its manual box was usually an M20 rather than an M21, the Trimatic and diff were the same, except in the HK and HG where the 308 had a Salisbury. Maybe the part nos are d Edited by user Tuesday, 15 April 2008 12:22:29 AM(UTC)  | Reason: Not specified
		You only have to be in front at the end of the race.
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boom		#7 Posted : Tuesday, 15 April 2008 5:08:22 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 20/02/2006(UTC) Posts: 990		check the engine number. In cubes we trust.
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HK1837		#8 Posted : Tuesday, 15 April 2008 6:37:47 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,898 Thanks: 1 times Was thanked: 558 time(s) in 533 post(s)		He already said it wasn't there. Very hard call. Look for numbers on the block. Start at the front near the cast date, and post them here. _______________________________________________________ If we all had the same (good) taste, who would buy all
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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HK1837		#9 Posted : Tuesday, 15 April 2008 6:37:47 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,898 Thanks: 1 times Was thanked: 558 time(s) in 533 post(s)		He already said it wasnt there. Very hard call. Look for numbers on the block. Start at the front near the cast date, and post them here. _______________________________________________________ If we all had the same (good) taste, who would buy all t
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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Guest		#10 Posted : Tuesday, 15 April 2008 7:02:03 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Is there a cylinder volume test (i.e. Air or fluid) that can be done to measure displacement or are there collapsible Verniers available which can be inserted through the spark plug hole? I would have thought, given that these things have been around s

HK1837		#11 Posted : Tuesday, 15 April 2008 7:11:48 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,898 Thanks: 1 times Was thanked: 558 time(s) in 533 post(s)		CAMS scrutineers would probably have a cc tester (or more accurately a cylinder volume tester). Ive never seen one though. _______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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HK1837		#12 Posted : Tuesday, 15 April 2008 7:11:48 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 1/03/2005(UTC) Posts: 14,898 Thanks: 1 times Was thanked: 558 time(s) in 533 post(s)		CAMS scrutineers would probably have a cc tester (or more accurately a cylinder volume tester). I've never seen one though. _______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
		_______________________________________________________ If we all had the same (good) taste, who would buy all the Fords?
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vintageholden		#13 Posted : Tuesday, 15 April 2008 8:22:44 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 2/06/2006(UTC) Posts: 1,664		quote: Originally posted by boom check the engine number. In cubes we trust.
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boom		#14 Posted : Tuesday, 15 April 2008 8:54:23 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 20/02/2006(UTC) Posts: 990		sorry didnt read that bit. In cubes we trust.
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