308 or 253 Options

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Guest		#1 Posted : Saturday, 4 March 2006 11:39:29 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		I am going to check out an engine tomorrow and it is suppose to be a 308, is there any way of telling a 308 from a 253 by sight as this engine is out of the car and running. Martin

Munromad2004		#2 Posted : Sunday, 5 March 2006 1:04:26 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		It is normally cast in to the side of the block. On the passenger side down low. Depending on what era it is the engine number will also help. Anything starting with QT is a 308 and QR is a 253. Also find out if it is a trimatic bolt pattern or
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Guest		#3 Posted : Sunday, 5 March 2006 1:06:49 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		yes there is. when looking at the engine from the front. the engine size is located rhs of engine block. . .253 . .308. hard to miss x

Guest		#4 Posted : Sunday, 5 March 2006 1:12:49 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		QR= 253 High comp QS= 253 Low comp QT= 308 Engine's with engine number prefix 11 is statesman and statesman De ville. Cheer's life's to short not to be....

Guest		#5 Posted : Sunday, 5 March 2006 1:18:01 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Just near where the starter mounts the engine size is cast into the block. if it ain't broke we can improve it. Cheers Steve

Guest		#6 Posted : Sunday, 5 March 2006 1:19:59 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		thank guys, munromad2004 what can be bolt to trimatic or turbo patterns and can you tell from the engine number which pattern it is. Edited by user Sunday, 5 March 2006 2:21:52 AM(UTC)  | Reason: Not specified

Guest		#7 Posted : Sunday, 5 March 2006 3:03:50 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hey, with the eng number ref to the high or low comp, my HZ 253 has a number NR1---5, is this a high comp?

Dylan		#8 Posted : Sunday, 5 March 2006 3:47:06 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 1/03/2005(UTC) Posts: 199		high comp. the N might mean it is a replacement block (from holden), dont quote me though.
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commodorenut		#9 Posted : Sunday, 5 March 2006 5:33:56 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 2/03/2005(UTC) Posts: 3,135 Thanks: 1 times Was thanked: 35 time(s) in 33 post(s)		IIRC this is for your VH commodore isn't it? If so, then there's a new range of prefixes for commodore engines, and you'll need a blue motor anyway for emmissions compliance. The following is a list of carby V8s from commodores that you are likely t
		Cheers, Mick _______________________________________________________________ Judge a successful man not on how he treats his peers, but on how he treats those less fortunate.
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Munromad2004		#10 Posted : Sunday, 5 March 2006 8:37:42 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 24/04/2005(UTC) Posts: 718		A turbo block and a trimatic block can be identified by the size and placement of the locating dowells on the rear of the engine block but without pictures this could be hard to explain. I think from memory that the trimatic ones are only half inch whi
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Guest		#11 Posted : Sunday, 5 March 2006 8:58:57 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		my problem is the 308 in the car at the mo is stuck bad so i'm looking at a replacement, motors still in and is mated to a celica 5 speed (alloy i think)and i dont have the time to pull it out with other commitments at the moment.

commodorenut		#12 Posted : Sunday, 5 March 2006 9:26:58 AM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered, Veteran Joined: 2/03/2005(UTC) Posts: 3,135 Thanks: 1 times Was thanked: 35 time(s) in 33 post(s)		You can still tell what it is in the car, evem with a box bolted up, as you can check the 2 top mounting bosses. The best way is to show you a picture, and I've already posted a pic on another forum, so simply check out post # 30 in this thread: http:
		Cheers, Mick _______________________________________________________________ Judge a successful man not on how he treats his peers, but on how he treats those less fortunate.
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