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Just wondering if the 253 and the 308 block are the same
size on the outside like do they use the same mounts
and are the mount points the same. What I'm getting at
is are both engines the same in mass, heads the same
distance apart, block length the same, height the same.
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Beauty, I've seen where a guy had installed a 308
into a Toyota Crown its a good fit we are going to
do the same with our Crown.7/75 Model we are going to
have a go at giving it the Mustang look, lengthing the
front doors, moving the pillar back.
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Sounds like a very interesting project you've got there Fred.
Cheers,
Mick
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Fred, just be careful of one thing though. Late 1974 to mid 1982 (or thereabouts but excluding Torana) auto and all post 1988 VN 308 blocks have a different gearbox pattern to 99.99% of 253 blocks. Basically what I'm trying to tell you is when you choose |
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The 253 and the 308 block are not the same.
I myself currently rebuilding a 253, have noticed that though the mains is the same, the cylinders are much different. The 308's cylinder is much wider in diameter therefore making the pistons different but the
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Wider diamete cylinders account for the difference in internal engine size. ;) Hence 253 has smaller diameter.
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boom, fred is just compariing the outside overall size not internals. cheers
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More on that thought- The 253 & the 308 have the same stroke, right? Is it possible to bore a 253 anywhere near 308? Does anyone know how far you can go with a 253?
The Beige Hornet.
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i think the 253 and 308 share the same casting like the 186 202's ect just diffrent embossing so i do beleave that you could take a 253 to 308 without hassle
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i think you would need to change the crank aswell.
Just like late efi engines have a 304 crank and not 308 so id assume 253s would use a different crank
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Hi Guys.
This query pops up so often we need a 'sticky' or something for it.
Basically the 253 & 308 (& 304) are externally the same size & mounting etc. All ancilliaries mount in the same spots using the same holes. The casting moulds for both are |
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I believe that 253 and 308 blocks have differtent water galleri4es for the cooling system. So, you can't bore out a 253 block to accept 308 pistons. 253 and 308 share the same stroke, but have different bore sizes.
JC
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sorry 4 my miss information i was allways told theywhere the same except 4 bore and you could make a 253 a 308
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There is what I always refer to as five basic generations of the 253/308 blocks. The main difference that makes parts swapping a little harder occurs between the first and second generations when the rear main seal changed from neoprene to rope. These cra |
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