Carb Conversion Quickie

I'm trying to get a better secondary metering block for my Holley 4160 (mine has flat brass plates)... I have met. blocks from a 4165- would that work, or am I bound to those '4160-to-4150' conversion kits? Thanks for any advice!

 

From what I understand, Holleys in general are a pain to fine tune...4150s are even harder for street use. I think if you start mixing and matching metering blocks from 4165s onto a 4160 you might have even more problems. The secondary metering blocks might be different than the primary ones on a 4150 also, not sure. It seems that in the kit, the metering block for the secondaries doesn't use a power valve.

My suggestion is to go to a speed shop and just buy a new metering plate.

Who knows, if you try it you way- it just might work.

 

Thanks, Deyo- I've been skittish about using the metering plates from hearing many negative experiences with it (but alas no solutions, except for the kit the Holley rebuild book recommends). The ad for the kit does note it has no provision for a power valve. But I think yer right, mixing a 4165 secondary block with the 4160 could cause a headache. Will either stick with the plates or fork it over for a kit 'n see what happens. Thanks for yer input, though!
I'll call Holley, of course, but nothin' beats hearing people's experiences with 'em. Wondered if anyone else on here had done the conversion.

 

Definately call up their tech line, I've had good luck with that in the past, and I'm sure they've heard everything before.

 

It's been several years since I called their tech line, but after responding to the automated questions about zip code, etc. I got a guy who said "That carb's (4165) crap. Get a 4150." I asked where he was and he was a dirt track shop with no inventory about 5 miles from my house. So they rerouted my long distance to the local hillbillies.

 

I called a couple of months ago when I needed suggestions as to why my 4160 was bogging down when I'd hit WOT. I don't remember having to do any automated bullshit. They probably had alot of complaints.