253 in fb

snags · Post by **snags** » Sun Jan 13, 2008 7:40 am

do i need to change fire wall to fit 253 auto in standard body

FB MAD · Post by **FB MAD** » Sun Jan 13, 2008 9:02 am

Firewall doesn't need to be modified for 253 or 308 into FB/EK to my knowledge but I'll leave the complete answer for required mods to the fellas here on the forum who've done 253/308 into FB/EK to fill you in on the details required.

Auto trans fitment into any FB body will need an aftermarket trans tunnel welded in as the FB didn't have an auto option and the existing trans tunnel isn't big enough to fit an auto.

EK Hydramatic auto bodies had an enlarged and braced trans tunnel to fit the auto.
3 speed manual EK bodies had the same trans tunnel as the FB's did.

Cheers,

Terry.

Mephious · Post by **Mephious** » Sun Jan 13, 2008 12:31 pm

You can definetly fit a SBC into the bay without modifying the firewall.

I cant imagine the 253 requiring more space then a SBC but Mick could tell you straight up the possible problems with the aus motors.

minifb · Post by **minifb** » Sun Jan 13, 2008 3:38 pm

Hi All, The 253 has a wider "V" than the small block chev. which means you have to modify the firewall to suit...Cheers Mark

mrs ratbox · Post by **mrs ratbox** » Sun Jan 13, 2008 4:00 pm

you could probably get it in but would then need to do mods at the front for radiator
it doesn't need much if you looked at mine you would probably not even pic it
even with this slight massage i think the 253/308 is still an easier conversion

Harko · Post by **Harko** » Sun Jan 13, 2008 8:16 pm

Mark "ekv8ute" Ute in Batemans bay that Ratbox built has no mods to the firewall ,Not sure about the front - didnt realy focus at that time of night

I will say I was realy impressed with how nimble it was on its feet ,Nice power , great cornering and great stopping ,It felt very responsive ...
Changed my mind about 308s in the old girls , hint hint

mrs ratbox · Post by **mrs ratbox** » Sun Jan 13, 2008 9:54 pm

see i said the way we do the firewall mods were unnoticable harko couldn't pick it

mad ek · Post by **mad ek** » Mon Jan 14, 2008 6:13 pm

i have a auto bodied ek with 253 5 speed ,fire wall is original and is running a v8 vc commodore radiator that has been shortened in height.i have enquired about fitting an auto and was told that it would not fit .car is fun to drive though.

mrs ratbox · Post by **mrs ratbox** » Mon Jan 14, 2008 9:25 pm

mad ek if yors is an auto bodied car an auto will fit i think even a turbo 400 will go in, let me know what yor doing with the 5 speed want to swap it for a trimatic

mad ek · Post by **mad ek** » Mon Jan 14, 2008 10:35 pm

I WAS THINKING MORE OF A T700

mrs ratbox · Post by **mrs ratbox** » Tue Jan 15, 2008 10:25 am

it should still go in i think they are only the size of a turbo 350 so smaller than a turbo 400

oldnek · Post by **oldnek** » Tue Jan 15, 2008 10:08 pm

T700 should just slip right in there.

snags67 · Post by **snags67** » Wed Jan 16, 2008 10:25 pm

thanks guys for the information re 253 fitting i might just weight up my options

snags67 · Post by **snags67** » Wed Jan 16, 2008 10:29 pm

this my username now cause i could not log on with other one*** snags**[/b]