Build Thread: '87 442 . . . Time to turn and stop

[Canon_Mutant]

Thanks for that.

A little better pic showing the actual size of mine. Coffee cup and masking tape for size comparison. Not much to it.

 

[Injectedcutty]

Oh yeah, one thing to note on your airbox. Double and triple check that the secondary butterflies don't contact it.
Being you currently run a 2" setup, you should be ok, but we had to modify the airbox on the camaro and actually make it about 5/16-3/8" taller. He runs a 750 holley though.

 

[Canon_Mutant]

Took some measurements and I think I could make a dual 3" EFI type work but not a dual 4. Wish I could find one?

 

[Rktpwrd]

Took some measurements and I think I could make a dual 3" EFI type work but not a dual 4. Wish I could find one?

Just make your own like I did...!!


Dual 4" on a 455 Olds...

Sorry for the photobomb, but I felt it was at least relevant to the topic...

 

[Canon_Mutant]

Photos are fine. Looks nice!

You've apparently got a cowl hood and no AC, electric fans, in short, a ton more room than I do.

I am in essence doing that and had actually started cutting sheet metal for a custom carb box when I ran across Spectre.

Decided to just use what's available. What I've got will work if it will flow enough air?

 

[olds307 and 403]

Cool, pretty sure your carb is 800 cfm. Glad you got it to work, hardly wait to see the finished product.

 

[Canon_Mutant]

You know, you are right on the cfm rating. I've just always called them 750s and it is a bit counter-intuitive that the size of the protruding bump ring into the primary venturi and whether there is a little bump there means it is a 750 or 800 AND one would assume maximum cfm to be related to how much air the carb will flow with the secondaries open when that also has nothing to do with it. But, until they are on a flow bench, it is all just speculation based on what someone said based on a theory of operation.

 

[SoFloG]

Man, I was wondering about this build the other day. Good to see progress. Are you still considering fabbing up those shock tower braces?

 

[Canon_Mutant]

No just bought the UMI brace. I didn't think I could build it cheaper . . .

 

[SoFloG]

If I remember correctly... solid trim panel running the span of the rear parcel tray, did you end up flushing it to the sub mounting surface on the enclosure? Is the sub still firing rearward without obstruction? Can you upload some pics? I would like to help you get it rite