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http://www.classiczcars.com/forums/showthread.php?s=&postid=88767#post88767

According to this thread, it sounds like the 4 barrel carb is inferior to the su's. I have only heard praises about the su's and considering that one of the members here has a Rebello 3ltr that has twin su's and has an output of 285hp speaks for itself.

-Ben

Originally posted by v12horse

http://www.classiczcars.com/forums/showthread.php?s=&postid=88767#post88767

According to this thread, it sounds like the 4 barrel carb is inferior to the su's. I have only heard praises about the su's and considering that one of the members here has a Rebello 3ltr that has twin su's and has an output of 285hp speaks for itself.

-Ben

Hi Ben: I think that Daves SU's have been modified a bit by Rebello. I'm not sure what all was done, but I believe they enlarged the diameter of the throats. But, anyway, as you state; SU's can supply high horsepower motors. Most folks would have no "need" to switch to a 4 bbl, or triples for that matter. Just one of those quirky mods that some people "like" to do.

The reason i posted this is as stated many people have achieved good power from the SU's I have seen it myself. I have a friend with a very similar motor to the rebello one built.

Yes the SU's are modified but to say that the Holley 4 barrel are better than poor performing SU's is a bit of a joke.

However it does state for those who find the SU's hard to tune and poor on performance.

Honestly you just need them to be set up right and they work wonders just like with any carb.

I guess i don't want to see people doing this conversion thinking it's good because it's not an improvement as far as I can tell.

  • 4 weeks later...

Unfortunately, the previous owner performed this conversion on my 240Z. Why? I know not. While I haven't driven a Zed with SU's or Webbers, I can say that I'm not a fan of the Holley four-barrel carb. To me, Holley=old American muscle car--no thank you. I would much rather have the stock, or preferably modified, SU's or a set of nice Webbers. When I have the money, I'll upgrade to triple Webbers or EFI (possibly on a turbo engine swap).

Jason Tripp

P.S. Why is this in the Tech Forum?

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