13-12-2016, 04:43 PM #1
253 V8 Doing a matching number engine
All this talk of 253's here is a little 253 my boy is doing for his Torana . Block 30 thou over heads pre poluttion cranks done cam specs roller rockers carby is 465 with front & rear metering blocks milled choke & vacuum secondary's ( probably go 600 holley )
13-12-2016, 04:47 PM #2
Nice one, I did a 253 years back with a similar cam. What sort of comp is he running here?
13-12-2016, 04:54 PM #3
Not sure really just faced head & block. Not after a super quick one . Though it did run 14.7 before rebuilding
13-12-2016, 04:58 PM #4
will be going back in this. We have letters of authenticity from GMH as why he's spending the money on the 253 .
13-12-2016, 05:01 PM #5
very nice i like it yep i have the original 253 in my 1 tonner will rebuild when the time comes....
13-12-2016, 10:19 PM #6
... you need comp with that cam
and i assume this won't be street driven much as that Torker manifold with the cam on a 2Fluffy three
will be a dog to drive (unless you run a high stally and/or very low gears)__________________________________
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13-12-2016, 10:23 PM #7
14-12-2016, 05:09 AM #8
M21 box & 3.36 diff from memory on 14 inch wheels. Both gearbox & diff have been rebuilt with this build up .
14-12-2016, 07:45 AM #9
14-12-2016, 10:33 PM #10
That cam & manifold is a bit of a mismatch! Especially the extra exhaust duration.has more exhaust duration than my cam does. Mine isn't that far off yours & has a ported torker albeit with 11.6 comp 5000 stall & 4.44 gears. With 10.5 comp a performer a manual with 3.55 gears was easy to drive but still had to rev it to get it to move.
With what your comp would be I would rethink the cam & manifold will work a lot better11 second E85 bottle fed boat anchor
15-12-2016, 07:06 AM #11
- Join Date
- Jul 2009
- Childers Qld
you guys have said what I first thought,, quite a fair bit of cam,, weekend car & rough idle, manual trans, 4.11s,, it'll be ok prob be a bit better with a small dp carb
15-12-2016, 02:16 PM #12
- Join Date
- Jan 2012
That really is a big cam for that engine. Even in a 308 would need a 3000-3500 converter. A crane 276 or similar would be more suitable with a performer if compression is a bit on the low side (less than 10.5:1 or so)
Looks very nice though!
15-12-2016, 02:45 PM #13
back in the day we just used a ol' Holden 4B manifold. Crane H264 with CR 99284-16 lifters Holley 650 DP in mates 2fluffity3 Torana.. pulled 13's smoked up all over the place and drove real nice around streets.
15-12-2016, 04:11 PM #14
Before I gave it to my boy it had Repco manifold & spacer for that carby . Motor was originally built by Ross Torellie at Carbo tune Tweed Heads . Drove quite well . Will wait & see how it goes now & see what carby he puts on it
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