Trick a 253

[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