NSW Corvettes

Technical Tips => Post 84 => Topic started by: rebel on January 01, 1970, 10:00:00 AM

Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on January 01, 1970, 10:00:00 AM
This is an 8.1ltr donk living in a Z06 known only as Jim's ... ;-)

It could be dressed a little more to make it pretty but one things for sure .. it's BIIIIGGG!!
http://www.villagephotos.com/viewpubimage.asp?id_=1267773&selected=131402

Home many cubes is 8.1ltrs anyway ... ?
Title: \"C5-8.1L transplant\";"1045805915
Post by: Brutus on February 18, 2003, 11:40:43 PM
Quote
Originally posted by rebel
This is an 8.1ltr donk living in a Z06 known only as Jim's ... ;-)

Home many cubes is 8.1ltrs anyway ... ?


8.1 litres = approx 490 cu "
How would you go if you wanted to upgrade your coil(s) in one of those things? That's gotta inflict some nasty pain in the wallet region for sure.;eek
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 18, 2003, 11:57:32 PM
Any info on what block he used?  I am presuming the motor came from something older than the car it went into or it came from a truck.

C5 and even C5R blocks can't be taken out that far to my knowledge.

[/quote]

8.1 litres = approx 490 cu "
How would you go if you wanted to upgrade your coil(s) in one of those things? That's gotta inflict some nasty pain in the wallet region for sure.;eek [/quote]

Diagnosing an ignition problem could be more fun than normal too. ;eek  Not that I'd turn down a C5 if one was offered to me. :)
Title: \"C5-8.1L transplant\";"1045805915
Post by: 77CVT on February 19, 2003, 10:30:53 AM
(http://www.lardlad.com/images/homer/thumbnails/homer82.gif)  Hmmmmm. cubic inches......
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 19, 2003, 04:03:54 PM
Quote
Originally posted by 77CVT

(http://www.lardlad.com/images/homer/thumbnails/homer82.gif)  Hmmmmm. cubic inches......


The more the merrier. ;);35
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 19, 2003, 08:35:20 PM
VO,

Apparently, the 8.1L translates to a 496CID engine. Its the truck engine that is
used in the 3/4T truck lines.

She puts out 340Hp and 475FT/Lbs of torque which I thought was a little low actually. There's also a marine verson that's rated at 375hp.

I dare say that this would very well be the ONLY huge block C5 around.

ps: 7cvt-> r those red x's attempts to post smilies ... ?
Title: \"C5-8.1L transplant\";"1045805915
Post by: Adam on February 19, 2003, 08:47:09 PM
BAH! What these c5's need is a good ol RED motor! Gimme a Holden 253 any day

:P
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 19, 2003, 09:04:28 PM
mate, you could've picked any other motor but a 253 ??? I used to blow those of in a baby 6 Cortina ....
Title: \"C5-8.1L transplant\";"1045805915
Post by: 77CVT on February 20, 2003, 09:47:56 AM
What red x's??  VO can see 'em!
Title: \"C5-8.1L transplant\";"1045805915
Post by: Brutus on February 20, 2003, 09:53:54 AM
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 20, 2003, 01:42:24 PM
betcha a 4X VO see's Red X's
Title: \"C5-8.1L transplant\";"1045805915
Post by: 77CVT on February 20, 2003, 01:53:52 PM
Geeze now I'm gettin' red x's - what's with this place?  don't get too excited - it was only a drooling Homer.
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 20, 2003, 04:55:20 PM
does that mean I don't get my 4x ?
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 20, 2003, 05:26:34 PM
Quote
Originally posted by 77CVT
What red x's??  VO can see 'em!


No I can't... ;30;--
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 20, 2003, 09:32:09 PM
NOW do I get my 4x .. ?
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 20, 2003, 10:57:44 PM
Things have changed a little now.  I pasted the address of 77CVT's link into a new window and got the pic.

BTW, when I couldn't get it yesterday I checked the links properties and had a pretty good idea of what it would have been.  Turns out I was right.  :22
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 20, 2003, 10:58:58 PM
;30 Arrgh, right after I made the last post I noticed the link now works...;30;30;30;30;30
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 20, 2003, 11:11:00 PM
Quote
Originally posted by rebel
VO,

Apparently, the 8.1L translates to a 496CID engine. Its the truck engine that is
used in the 3/4T truck lines.

She puts out 340Hp and 475FT/Lbs of torque which I thought was a little low actually. There's also a marine verson that's rated at 375hp.

I dare say that this would very well be the ONLY huge block C5 around.

ps: 7cvt-> r those red x's attempts to post smilies ... ?


Thanks for the info.

Assuming all that info is spot on and the car in question is a Z06, the car has dropped a minimum of 45hp but picked up about 90 FT/LB of torque (based on a 2001 (first year) Z06).

I admire and respect the work and ingenuity with the swap but if it were my car I would have played with some bolt ons or done the heads and cam.  Then again, it's not my car.  Just my opinion.

Definitely wins bragging rights though, I bet he's got the biggest cubed C5 on his block.  ;35
Title: \"C5-8.1L transplant\";"1045805915
Post by: johnny86convert on January 01, 1970, 10:00:00 AM
VO.....GREG  morris  from  corvette  conversion  has  done  the  sums,  the  measurements  and  knows  the  right  500cube  motor  and  harness  that  will  fit  in a  C4............now  that'd  be  a  REAL  GUTTER  SLAPPER  LOL  :);)
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 21, 2003, 11:48:02 PM
VO, the authenticity is looking a little dubious now as why would anyone want to drop 45 horses ? Perhaps it wasn't a Z06. Whilst on the subject of dropping power like this, I noticed in the current Unique Cars a Victorian vette for sale that reads "used to be a big block now a 350cid" .... I'm not being critical but why would anyone want to change a big block 4 speed to a small block 4 speed ?
Title: \"C5-8.1L transplant\";"1045805915
Post by: Vette Obsessed on February 22, 2003, 11:49:26 AM
Quote
Originally posted by rebel
Whilst on the subject of dropping power like this, I noticed in the current Unique Cars a Victorian vette for sale that reads "used to be a big block now a 350cid" .... I'm not being critical but why would anyone want to change a big block 4 speed to a small block 4 speed ?


Just guessing but I would assume one of two things - number one being most likely:
1.  The big block motor died and it was more economical to install a replacement small black than repair/replace the big block.
2.  The owner thought the big block was too heavy, thirsty, more than they needed/whatever and dropped in the small block instead.
Thats my theory, the current owner could probably set the story straight on that one.
Title: \"C5-8.1L transplant\";"1045805915
Post by: rebel on February 22, 2003, 11:11:54 PM
yeah, No 1 had crossed my mind but the drop in power AND moving away from the original design would force me to put off restoration until I could afford it. I dunno there's probably a good reason and maybe a previous owner did it.

I'm feeling adventurous, I'm gonna ring him and ask him .... he's probably a member of the Vic Corvette club so wouldn't mind a chat about his vette.