Trick a 253

[THZ-NSC]

hey guyz, any1 got any suggestionz for what would be the best mods/upgrades for a Holden 253, every1 i know iz doin up 308'z n 304'z so im gunna do sumptin different with this project, i wanna get az much power az i can out of it whithout having to bore or stroke it if i can, az ive been told that will cause problemz in the long run, open 2 suggestions

[soop]

Dirty big turbo charger.

[Hangman]

Basically, anything you can do to a 308, you can do to a 253...

[Brett_jjj]

I know a bloke who spent around $10,000 on a 253 years ago,and he was spewing from day 1 that he didnt do the same work to a 308 instead.It went really well for a little V8,but it lacked that ultimate "oomph".Even 308's havent got a real lot of power compared to say a 350 chev or 400 chev or even a 351 ford V8.And they all pretty much cost around the same to do the performance work to and to buy the "goodies" for.,Id do the work to the biggest engine I can run.For a commodore thats 308 unless you stroke the 308 of course,which is another option,you could just go bigger than everyone else to be different.Im not even sure what size you could stroke a 308 to.

[Hangman]

Not sure what the biggest you can stroke a 308 too is, but I've got the recipe for a 340 (from memory) 253. Don't think it would last long though...

[soop]

Biggest a 308 will go is 396ci. And they don't like it.

355ci is where its at.

[ari666]

you should bore out your 253 to 4 inches. leave the stroke as is for now.

[Calaber]

you should bore out your 253 to 4 inches. leave the stroke as is for now.

That takes it out to 308. 253's won't bore that far with any safety.

[Blown V6 Hatch]

That takes it out to 308. 253's won't bore that far with any safety.

And what would be the point anyway, just buy a 308....

[old mate]

Biggest a 308 will go is 396ci. And they don't like it.

355ci is where its at.

why the hating on 396ci ? they are torque monsters.

[THZ-NSC]

Dirty big turbo charger.

Any ideas on a good setup for 1??

[soop]

Good setup?
Yeah sure, EFI 308.

You'll need to bore the 253 30thou to get EFI heads to fit. Then just do everything you'd do to the 308.

As for the 396, Reality is why all the "hating".
Cooling, Side load on the piston skirt and bore wall.
Work needed to be done to the block to make strong enough (cementing water galleries).
After all that, I don't think 383's like to rev all that much, 396's are worse.

355 seems to run better then a 308 did.

[THZ-NSC]

Big Thanks 2 every1 that haz made a comment so far, all ur info iz a big help, I've decided to stick with the 253 for this car, az had 308's in the past & am in the middle of trickin my 304 out now

[THZ-NSC]

but keep the comments coming open to all ideas for a 253.

[soop]

If you're already building a 304, just do exactly the same sorta stuff to the 253.

[ari666]

That takes it out to 308. 253's won't bore that far with any safety.

omfg *facepalm* sometimes you guys just dont get it do you

[Calaber]

omfg *facepalm* sometimes you guys just dont get it do you

Ari

If it was an attempt at humour, it failed. We have a guy who has asked for genuine advice. If he doesn't know, he could end up making a goose of himself following your advice. If it wasn't meant to be humourous, then, yeah, we don't get it.

[ve2 SSV wag]

start with ahigh comp 253 ..There is two versions 9.1 and 10.1 cant remember but there is a prefix on the block to tell which you have Often wondered why my old LJ semmed to go so hrd when got a work shop manual.. found out two different versions mine was high comp

[ari666]

If it was an attempt at humour, it failed.

ok point taken.

now for something useful:

HT and HG holden 253's engine numbers start with a letter, either H or L and are followed by 1001 and up. the H signifies that it is a high comp engine, which has a CR of 9.0:1 power output of 185Bhp@4400rpm. the low comps had 8.0:1 with a power rating of 174 Bhp@4400rpm

HQ 253's have a Q and a letter either R or S S being low comp, r being high comp. the low comps had 8.0:1 174bhp@4400 and the highs had 9.0:1 and 185bhp@4400

HJ, HX, HZ, LX and LH all only had high comp engines (9.0:1)

VB got bumped up a bit to 9.4:1 and made a whopping 117bhp@4000rpm

hope that makes up for my other post.

[Sabbath']

ok point taken.

now for something useful:

HT and HG holden 253's engine numbers start with a letter, either H or L and are followed by 1001 and up. the H signifies that it is a high comp engine, which has a CR of 9.0:1 power output of 185Bhp@4400rpm. the low comps had 8.0:1 with a power rating of 174 Bhp@4400rpm

HQ 253's have a Q and a letter either R or S S being low comp, r being high comp. the low comps had 8.0:1 174bhp@4400 and the highs had 9.0:1 and 185bhp@4400

HJ, HX, HZ, LX and LH all only had high comp engines (9.0:1)

VB got bumped up a bit to 9.4:1 and made a whopping 117bhp@4000rpm

hope that makes up for my other post.

See, a useful piece of advice would have been to make sure the welds on the chain are strong enough to cope with being dragged along the seabed in strong tides. But then you went and got all technical

[Cúl-Báire]

Have the crank offset ground to make a 330ci combo, cam, vn heads and big dirty turbo and you are about done!
Atleast take it to 330ci, a 4 cylinder will puch out as much as small V8 these days, really not worth the heartache of keeping it a 253.

[soop]

Ever wondered why hotting up a 253 is "Different"?

[THZ-NSC]

Ever wondered why hotting up a 253 is "Different"?

Only coz itz the original motor in car (in very good condition, goez hard) so i wanted to keep it in and get the most out of it. Dnt wanna go 2 racing extremes with it, i wanna still be able to jump in & drive it wen i want without a worry, but want it to be tuff (for a 253 anyway), So i wanted to see wot other people would or have done, to beef up a 253, so i can see wot i should and shouldnt do with it. (besides ditching it). Az i said im open to all suggestions, so far i received alot of help thanx to all!!

[soop]

The 253 is no different to the 308 in terms of mods.
If you can't go to the v8 section of the forum and spend 10mins reading I aint going to spoon feed you.

[HoZy]

Genuine advice,

Get a 308, Grind Engine number, Stamp your 253 engine number, Dump your 253

BUILD IT...