75 Nova U/SA

[MR DERBY CITY]

Will, you do realize that you must have the alternator belt on in stock eliminator ? ....M.J.

[Mark Yacavone]

Originally Posted by MikeMoller

The unsuccessful modified headers with 'cheap' tethers.

Mike, Not surprised those headers didn't work so well.It looks like two long tubes and two short ones.You could do like I mentioned with the step, but I don't think you can get them equal without starting all over.
Usually you can lengthen the 7 and 8 tubes by going around the frame rail.
The 5 and 6 tubes are where you have to get creative.
Do you have a pic of the original headers or whatever works best?

[impstocker]

Thanks M.J. for the heads up. My computer too slow to download the whole NHRA rulebook, I'm just going on what I know! Maybe that's the problem. I do remember having a larger pulley on my alternator but it would not keep the battery charged enough. I did not want to rely on my generator. Seems like a lot of rules have changed since 2004, much more liberal.

Mike, didn't mean to hijack your thread! Thanks

Will L

[joe huestis]

The combination in this car is the 262/165 which in '75 had to use the tiny 1.09" Venturi 2GC carb. This puts a major challenge with this combo. This is the exact motor I ran in my Monza stocker sans the small carb. As a '76 I was able to run the 1.18 venturi carb such as what Briane Philbrick runs on his in Canada. That .09" difference makes a world of difference in the performance of this tiny V8.

[goinbroke2]

Thanks Joe, for comparison though, a 302 runs 1.08 and a 351 or 400 ford runs a 1.21....so in relative terms, he ain't so bad! LOL!

Cool stocker though.

[Billy Nees]

Originally Posted by goinbroke2

Thanks Joe, for comparison though, a 302 runs 1.08 and a 351 or 400 ford runs a 1.21....so in relative terms, he ain't so bad! LOL!

Cool stocker though.

The air horn on the 2Gs is very small and restrictive not like the motorcraft 2Vs. Big difference.

[Dwight Southerland]

Does anyone have REAL flow numbers for 2-bbl carbs?

[goinbroke2]

This is for the Fords;

Ford 2barrel CFM by venturi size --
.98=190
1.01=240
1.02=245
1.08=287
1.14=300
1.21=351
1.23=356
1.33=424

As most already know 4bbls are rated at 1.5" vacuum and 2bbl's are rated with 3" vacuum. I'd be curious to see what the chev 2bbl's flow.
Oh, and this is untouched flow numbers.

[Dwight Southerland]

Originally Posted by goinbroke2

This is for the Fords;

Ford 2barrel CFM by venturi size --
.98=190
1.01=240
1.02=245
1.08=287
1.14=300
1.21=351
1.23=356
1.33=424

As most already know 4bbls are rated at 1.5" vacuum and 2bbl's are rated with 3" vacuum. I'd be curious to see what the chev 2bbl's flow.
Oh, and this is untouched flow numbers.

I have seen this list before. Do you know where it came from and some justification for its accuracy? Are these numbers @3"H2O?

[Mark Yacavone]

Originally Posted by joe huestis

The combination in this car is the 262/165 which in '75 had to use the tiny 1.09" Venturi 2GC carb. This puts a major challenge with this combo. This is the exact motor I ran in my Monza stocker sans the small carb. As a '76 I was able to run the 1.18 venturi carb such as what Briane Philbrick runs on his in Canada. That .09" difference makes a world of difference in the performance of this tiny V8.

True enough.It's a small carb.Same one Billy uses on his 307.
It feeds 45 less cubes though.
Less cam, but a bit more compression.
30 hp less , rating wise
It ought to run a half second under in decent air with headers, converter and such things maxed out......in my opinion.