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Guest		#1 Posted : Tuesday, 14 August 2007 1:51:35 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		its no doubt an old question how do more grunt from a 253 cheers ps it will be on duel fuel i dont want to go 308

boom		#2 Posted : Tuesday, 14 August 2007 3:03:57 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 20/02/2006(UTC) Posts: 990		turbo If it doesn’t burn fossil fuels, it’s not a sport.
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trubluhq		#3 Posted : Wednesday, 15 August 2007 1:12:08 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 28/04/2005(UTC) Posts: 758		hmm...warm cam, electonic ignition. put on LPG heads...quad 308 manifold and Quaddie. cold air injection, prob suitable pistons to raise the compression ratio, a known good and tested crank too. I think 2.5 inch singles are the go..or balanced twins with
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JBM		#4 Posted : Wednesday, 15 August 2007 1:32:37 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)		Early 253s had dome top pistons, are sure way to increase the compression. This way you dont have to shave the head or block. New valve guides would also help the top end lubrication problems with ULP. You can put big valve or VN heads on if you want to r
		You only have to be in front at the end of the race.
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HK1837		#5 Posted : Wednesday, 15 August 2007 6:47:41 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)		Other way round. Late red 253's had the high comp pistons. Early ones were flat top. _______________________________________________________ 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		#6 Posted : Wednesday, 15 August 2007 6:47:41 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)		Other way round. Late red 253s had the high comp pistons. Early ones were flat top. _______________________________________________________ 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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Guest		#7 Posted : Wednesday, 15 August 2007 7:29:23 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Hi John, For all the suggestions getting more grunt from a 253... Why even bother..!! The price of a good running 308 is so cheap these days that it would cost a lot more to start dicking around with a wantabe V8 like the 253... Simply buy a seco

maccaq		#8 Posted : Saturday, 18 August 2007 6:38:36 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 16/04/2007(UTC) Posts: 44		I have the same problem. I want to keep my 253 HQ Munro matching no.s so I dont want to flick it in favour of a 308. Any other suggestions?
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maccaq		#9 Posted : Saturday, 18 August 2007 6:38:36 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 16/04/2007(UTC) Posts: 44		I have the same problem. I want to keep my 253 HQ Munro matching no.'s so I don't want to flick it in favour of a 308. Any other suggestions?
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musksell		#10 Posted : Saturday, 18 August 2007 7:12:32 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/08/2005(UTC) Posts: 243		Theres lots of ways.....I think really it's all about how much money you want to spend. 1. put 5 litre VN heads and injection on it.Wait another 3 years for LPG injection to be half the price it is now ($4000). 2. You want to run LPG....so put 4 b
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musksell		#11 Posted : Saturday, 18 August 2007 7:12:32 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/08/2005(UTC) Posts: 243		Theres lots of ways.....I think really its all about how much money you want to spend. 1. put 5 litre VN heads and injection on it.Wait another 3 years for LPG injection to be half the price it is now ($4000). 2. You want to run LPG....so put 4 ba
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adam PERTH		#12 Posted : Saturday, 18 August 2007 12:02:10 PM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		i am in a simular situation to maccaq, have a few factory L32 cars that i with to retain matching numbers throughout. When it comes time for engine rebuild, i will look hard at going 292. i understand it uses a 307 slug,(3.85 ") , what else is involved
		Old holdens brought on the spot, quick decision, cash paid.
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maccaq		#13 Posted : Saturday, 18 August 2007 10:42:57 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 16/04/2007(UTC) Posts: 44		So you mean you bore out the 253 to 292 with oversize pistons etc.?
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musksell		#14 Posted : Sunday, 19 August 2007 5:27:09 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/08/2005(UTC) Posts: 243		I havn't heard of boring them out to 292.....but I could easily be wrong. I meant stroking them out....which ends up being 88mm stroke and about 92mm for the 253 std bore.....this is a lot closer to the "ideal" square bore and stroke configuration. R
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musksell		#15 Posted : Sunday, 19 August 2007 5:27:09 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/08/2005(UTC) Posts: 243		I havnt heard of boring them out to 292.....but I could easily be wrong. I meant stroking them out....which ends up being 88mm stroke and about 92mm for the 253 std bore.....this is a lot closer to the "ideal" square bore and stroke configuration. Re
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adam PERTH		#16 Posted : Sunday, 19 August 2007 5:41:16 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		i have heard of 292 - yes bored out 253's 3.85 inch bore...? like to hear from others??? A1 Bogan.
		Old holdens brought on the spot, quick decision, cash paid.
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adam PERTH		#17 Posted : Sunday, 19 August 2007 5:41:16 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		i have heard of 292 - yes bored out 253s 3.85 inch bore...? like to hear from others??? A1 Bogan.
		Old holdens brought on the spot, quick decision, cash paid.
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keithholden		#18 Posted : Sunday, 19 August 2007 5:42:32 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		I dont think you have to go overboard all you need in my opinion is a cam and extractors.. Cam is the cheapest way to increase horsepower.. You dont need to go to extravagant.. Simple is best. Cause im kind of simple.. Now dont answer that lol If its
		If its not broke it will be soon
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antoni		#19 Posted : Sunday, 19 August 2007 8:53:30 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2006(UTC) Posts: 108		Hi all 253s I were as big as 290 used std 305 chev pistions masterstroke did the cranks sj chev 283 rods. VN heads vales to wide a part. VN rods to heavy. tony
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