75 Nova U/SA

MikeMoller · 05-12-2015, 10:00 PM

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!

MikeMoller · 05-25-2015, 09:48 PM

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.

Mark Yacavone · 05-25-2015, 10:31 PM

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!

MikeMoller · 05-28-2015, 11:43 AM

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.

MikeMoller · 06-15-2015, 08:23 PM

The unsuccessful modified headers with 'cheap' tethers.

Mark Yacavone · 06-29-2015, 01:06 PM

Quote:

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 · 06-29-2015, 09:16 AM

Quote:

Originally Posted by MikeMoller

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.

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.

MR DERBY CITY · 06-29-2015, 12:53 PM

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

impstocker · 06-29-2015, 05:12 PM

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 · 06-29-2015, 10:03 PM

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.

05-12-2015, 10:00 PM	#1
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	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! __________________ Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 05-12-2015 at 10:06 PM.

05-25-2015, 09:48 PM	#2
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	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. __________________ Mike Moller NHRA 203 Q-R-T/SA

05-25-2015, 10:31 PM	#3
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,845 Likes: 2,938 Liked 5,157 Times in 1,969 Posts	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! __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

05-28-2015, 11:43 AM	#4
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	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. __________________ Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 05-28-2015 at 11:48 AM.

06-15-2015, 08:23 PM	#5
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	Re: 75 Nova U/SA The unsuccessful modified headers with 'cheap' tethers. Attached Thumbnails __________________ Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 06-15-2015 at 08:41 PM.

06-29-2015, 12:53 PM	#8
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,669 Likes: 1,095 Liked 8,249 Times in 1,542 Posts	Re: 75 Nova U/SA Will, you do realize that you must have the alternator belt on in stock eliminator ? ....M.J.

06-29-2015, 05:12 PM	#9
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	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

06-29-2015, 10:03 PM	#10
joe huestis Senior Member Join Date: May 2006 Location: Youngsville, N.C. Posts: 626 Likes: 291 Liked 415 Times in 115 Posts	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. __________________ Joe Huestis "Annie's Song" Racing U/SA 2724 Youngsville, NC