Re: 75 Nova U/SA
 

Joe, Schoenfeld lists the 165 for:
Drag "Street Class"
Camaro 70 - 81 ¤ Monte Carlo 72 - 77 ¤ Nova 75 - 79
Will not fit Chevelle

Conventional Style Headers for Cars with Engine in Stock Location or engine set back.
Clears side and rear engine mounts.
Will fit straight and angle plug heads. Must use short oil filter.

Re: 75 Nova U/SA
 

Mike, Hedman makes the #68310 (1.5" tube convention style header) for the G bodies. Just looking at them, I don't think there would be too much involved in getting them in a Nova subframe. Hedman's #68311 is the same header with a ball flange at the rear rather than a flat collector flange. A set of these and those inexpensive OBX collectors could be a nice cost effective setup.

I've got experience with Schoenfeld headers and ran a set of their 1 5/8-1 3/4 steps with Performance Welding merge collectors last season on my stocker. Schoenfeld seemed good to work with as I ordered my headers with the collectors loose in the box, Maybe they could do a set of 1 1/2" for 'ya. -Al

Re: 75 Nova U/SA
 

After looking at videos of some test runs, gonna go for more rear gear. Found a brand new Richmond 5.57 for a super price, will be in before the weekend(thanks Doug Smith), plan to test this SundayMight be a bit much for 1/4 mile, but will surely be fine for 1/8. We shall see! Also got some OBX merge collectors, they are stainless so took them to a welding shop to get some tabs welded on.

Re: 75 Nova U/SA
 

Nice Mike

Re: 75 Nova U/SA
 

5.57 gear helped, about .2. Only made 4 runs, still need more work.

Re: 75 Nova U/SA
 

Updates
So took the car to a lumberyard and got it weighed, had to add 150 lbs. Disappointing that it was that light. Also occurred to me that the drive shaft did not have much play, just barely could get it in, the ujoint had to be turned to get it in. Fortunately, it had the bigger trans yoke, so swapped that out with the smaller one just to make there is no bind going down track. Cut 6 inches off the collector to get total of 19. Thinking the 25 inches was to much and hurting mph. MPH is 70 at the 1/8, and 86 in the 1/4, seems like it should be higher than that in the 1/4.


Went to Dinwiddie/Richmond for a CCRA race, and only got to run 1/8. Run one was 9.39 @ 70.13mph. Went from 69 jet to 66 jet, changed timing from 42 to 40. Went 9.40 at 70.02. Had to leave it alone for racing at this point, won first round 9.40 @ 70.01. Lost next round 9.359 @ 70.25 (broke out-9.38 dial).
For the last run, left at 3300 instead of 3000 - it was close to overcoming the brakes - and up 100 rpm on both shift points -5300 and 5800.


60 fts ranged from 1.94-1.91, 330's 5.91 - 5.89.

Re: 75 Nova U/SA
 

Took the car to IHRA Piedmont race, it qualified last but I felt comfortable on the lights and it goes under about .1 for IHRA 1/8. which is good enough to race.
Won first round in the Saturday combo, redlighted in the second round.
Won first round in the Sunday race, but was late in the second round against Chip Johnson-really nice guy we talked afterward.
Got to get a few things built/changed and get some 1/4 mile testing in, since not sure I can run NHRA index in 1/4. Elected to pass on the LODRS in Richmond because of that, would rather spend the money on parts/testing. Tops on the list is headers, carb, and converter.

Re: 75 Nova U/SA
 

Way cool build. Good luck I'm sure you will get it under the Nhra index just keep, at it. I think cars like this are just damn cool!

Re: 75 Nova U/SA
 

Well, modified some old MR Gasket headers 1 5/8. Extended the primaries 5 inches and attached OBX Merge collectors, throat 2 1/2 going out to 3 inches, collector length 8 inches from throat to end . SLOWED the car almost 3 tenths and 1.5 mph in the 1/8th. Went from 68 jets to 72 jets (as most said they had to richen with the merge collector) and had no change. Put the old headers back on and went right back to 9.40. Thought sure the headers would pick it up.

Thanks for the encouragement Ed!

Re: 75 Nova U/SA
 

Seems the car does not like my home made alternator mounts. Keeps throwing the belt or burning it up. Interesting, it threw the belt off so ran it without a belt, picked up almost 2 tenths-so ordered stuff from east coast auto electric -mounts,pulleys, belt -to get things right.

Re: 75 Nova U/SA
 

Mike, You realize you can use any pulley combo you want now, right? And lose the alt. fan too LOL.
Yours is real Stock ..That is so passe. This is the new Stock now!

Re: 75 Nova U/SA
 

Mark, was just trying to do things on the cheap. But I know from my SS days that if cheap don't work right away, ditch it and go for the good stuff.

Someone told me years ago-"If you settle for something less than the best, you have to include some cost for the risk. if you can afford the risk, you can afford the good stuff."

I hate having issues on race day!

BTW - like the D/FS.

Re: 75 Nova U/SA
 

The unsuccessful modified headers with 'cheap' tethers.

Re: 75 Nova U/SA
 

This is such a cool build...very fun to read through!

Re: 75 Nova U/SA
 

A quick question for clarity.. in the first post you stated "The engine will be the 262 V8 rated at 165."

Then on page two you stated "Depending on the grill/year, it can run a 350 2v, 350 4v, and a 305 2v"

Just curious what the combo is?

Love the "different" cars and unusual combo's which is strange to say about a sbc! LOL!

Re: 75 Nova U/SA
 

Here's a chart that lays out the Stock classes for all the 75-79 x-body Novas. Mikes reference was to the fact that the only identifying difference from year to year is grille and badging, so you could claim a particular year for the body by changing to the correct grille and trim.

http://i39.photobucket.com/albums/e2...psgtux89t2.png

Re: 75 Nova U/SA
 

Dwight, the 76 "stick" is 275 hp

Re: 75 Nova U/SA
 

Correct, Bill. I believe the classification is correct, but I missed the title in the chart. Thanks!!


The 78 & 79 are also 275, but the title in the chart is incorrect.

Re: 75 Nova U/SA
 

No, I realised that Dwight, I was wondering what his actual combo was, not the options he had. Looking at your chart and seeing U/SA in his signature means he must currently be running the 262/165hp combo though.

Thanks

Re: 75 Nova U/SA
 

Just noticed this post. I ran an alternator in my 1968 Impala BBC 396/325 I/S car back in 2004. Never tried without the belt. Damn if I could have picked up that much I would have tried it. I liked running the alternator felt batter keeping a full charge in battery plus I ran 7 AL MSD box which will be same in my 65.

Will Lamprecht 65 Impala I/SA in progress.

Re: 75 Nova U/SA
 

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

Re: 75 Nova U/SA
 

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?

Re: 75 Nova U/SA
 

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

Re: 75 Nova U/SA
 

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.

Re: 75 Nova U/SA
 

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.

Re: 75 Nova U/SA
 

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

Re: 75 Nova U/SA
 

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

Re: 75 Nova U/SA
 

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.

Re: 75 Nova U/SA
 

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

Re: 75 Nova U/SA
 

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.

Re: 75 Nova U/SA
 

Sooooo the new alternator setup worked well, but hard to tell if there was a performance pickup. Ran an 1/8 mile CCRA race and the air was really bad, 90+ degrees and very humid, first really bad air I have run in. One P/SA car that normally runs mid/low 8.0's in reasonable air was running high 8.2's, and I was at 9.56 twice. Took 2 degrees timing out and went slower. So I'm guessing based on the P/SA car I was losing at least .2 which would have put me at 9.36 in reasonable air(9.50 IHRA 1/8). No races coming up and weather is HOT so going to concentrate on header and converter mods for the time being.

Mark, the current headers are Hooker Headers#520-2451(several pics on JEGS) 1 5/8 prim 30" long 3" collector with 18 inches added. I don't think these are totally 'equal length' either. Test was to see if the merge stuff worked on the 'old' headers before I hacked up the hookers. So not going to hack them based on the test. And yes I am going to call Kenny.

Re: 75 Nova U/SA
 

????


Billy's 307 uses a 1.437" throttle bore carb like a 283; the 75 262 uses a 1.686" throttle bore carb like a 305/350. The 72 307 is rated at 171; the 75 262 is rated at 165.

Re: 75 Nova U/SA
 

I should have said same venturi size, which is smallest restriction, and what most look at for air flow comparision...FFFFFord air horns aside for a moment.

My mistake.I though Billy had a 1970 year model. Never looked at it too closely.
Should have looked it up on www.classracerinfo.com

I stand by whatever's left!

Re: 75 Nova U/SA
 

Mark, the 262 uses the large base 2G. Yes, it has the same venturi sizes but it has a much better airhorn.

Re: 75 Nova U/SA
 

All 307s use the small base 2G. Just like a 283. OBTW, I think that you're right about the 262. It should run much better than a 307.

Re: 75 Nova U/SA
 

Mike at that race I was only about .05 slow in the heat the 8.22 was a bad run. By the end of the night I was running low teens which was about right

Re: 75 Nova U/SA
 

SO, the 305 with 43 more cubic inches, a bit better camshaft, and a bigger venturi carb, is it better than the 262 even though it costs 15 hp?
(Not mentioning the nice heads on the 305)

Re: 75 Nova U/SA
 

The 305 and 262 heads are basically the same. AND the 76 262 gets the same carb as the 305! Only problem is the availability in the Monza only. I personally think that the 305 is a better deal but then, I'm the guy that did a 307!

Re: 75 Nova U/SA
 

Edit :
Gonna start the bidding at -.55...Who'll give -.60? -.55 .55 .55 going once...

Re: 75 Nova U/SA
 

Chip, you just burst my bubble! LOL