Pump gas street Vega/Monza..combo/timeslips

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Re: Pump gas street Vega/Monza..combo/timeslips

Postby 6D9 » Tue Jan 26, 2016 9:39 pm

avewhtboy wrote:
6D9 wrote:
avewhtboy wrote:I took my car to the strip just after I purchased it. The specs on the car I was given were as follows.

327 (four bolt main) aren't they all, I saw someone post lol
full manual TH350 2500 stall
4.56 mini spool in a Ford 9 inch
MT 28x9.50 tires
was told ran 11.70

my actual knowledge is its not a four bolt main
no idea what size motor it is, specs out as 350 block/heads
Posi not working, its a peg legger and had really bad wheel hop
14.0 at 98 mph in 1/4 were the times I got, was really disappointing...


Yeah thats a bummer when it doesn't come close to what you were expecting. What carb,intake,gears,exhaust,timing curve?


It has a Demon 750 Air gap intake and the timing appears to be locked at 40 degrees which means it has no compression I believe.
It had the 1 3/4 inch hooker headers with dynomax mufflers 3 inch pipes.

It's much different now so I am interested to take it to the track again see if I made it slower!
Same motor carb, but smaller 1 1/2 Sanderson Headers, 5 speed manual 3.73 with posi traction 265/35/18 tires

I suspect it will be slower.

Image



If the motor is lower compression and not alot of cubes it may prefer the smaller primary tube headers. The intake in the pic looks to be a big single plane. The Edelbrock RPM air gap is a dual plane style and would probably really wake the motor up down low and mid range. I would double check the timing and verify your get WOT.
72 Vega GT...406 sbc..TH700R4...3.42 gear...235/60/15 MT DR's....11.54 at 118.6..Dad's car
72 Vega GT...4cyl..4 speed..all stock
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby 6D9 » Sun Dec 04, 2016 4:20 am

Since I started this post figured should update since running my dads Vega. Only got 1 pass in. Went 11.54 at 118.6. Left easy with a 1.80 60 foot. Car has 11.2-11.3 in it no problem.
72 Vega GT...406 sbc..TH700R4...3.42 gear...235/60/15 MT DR's....11.54 at 118.6..Dad's car
72 Vega GT...4cyl..4 speed..all stock
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby EVL VEGA » Sun Dec 04, 2016 9:42 am

Suppose I should put my new times in here.
6.86 @ 101 in the 1/8th no nitrous. Calced to 1/4 mile with air density at track that day it's about a 10.4.
Drove it to and from track 20 miles each way.
EVL VEGA
'73 Vega Hatchback (former Super Gas car)
406 SBC, AFR 210 Eliminator Heads, 9:1 comp, pump gas, 328RWHP/412RWTQ (old heads, no N2O 1/17/04), 6.86 @ 100.8 in 1/8th (No N20 9/4/16), Mike's Trans TH400 (reverse manual), 5000 stall, 12 bolt, 35 spline strange axles, 4.33 gears, spool, hipster transbrake, linelock, backhalved, Alston 3 link, 100 shot NX Hitman+ kit, LC1 Wideband sensor, 31x18.5 MT Sportsman Pros, "Plum Ugly"™ Purple paint.
"Pound to fit..paint to match"
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby chevyart » Sun Dec 04, 2016 11:23 am

hey evil: your car is running great. your calculation might be off a bit. that 1/8 mile run would probably equal a high 10.8 or a low 10.9. the only thing your car may be lacking for the 1/4 mile is a better gear ratio to get your car to came through the traps just coming up on the maximum RPM,s where your cam makes it most power, and to make sure it is getting fuel pumped up there at the higher speeds. good luck art
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby EVL VEGA » Sun Dec 04, 2016 11:40 am

chevyart wrote:hey evil: your car is running great. your calculation might be off a bit. that 1/8 mile run would probably equal a high 10.8 or a low 10.9. the only thing your car may be lacking for the 1/4 mile is a better gear ratio to get your car to came through the traps just coming up on the maximum RPM,s where your cam makes it most power, and to make sure it is getting fuel pumped up there at the higher speeds. good luck art


Actually the altitude of the track is pretty high. I spoke to a friend of mine that races there every weekend (in his car and as a driver for two other cars both run 4's in the 1/8th) and he said that was pretty spot on or a little conservative for that track on that day when adjusted for altitude and air density.
EVL VEGA
'73 Vega Hatchback (former Super Gas car)
406 SBC, AFR 210 Eliminator Heads, 9:1 comp, pump gas, 328RWHP/412RWTQ (old heads, no N2O 1/17/04), 6.86 @ 100.8 in 1/8th (No N20 9/4/16), Mike's Trans TH400 (reverse manual), 5000 stall, 12 bolt, 35 spline strange axles, 4.33 gears, spool, hipster transbrake, linelock, backhalved, Alston 3 link, 100 shot NX Hitman+ kit, LC1 Wideband sensor, 31x18.5 MT Sportsman Pros, "Plum Ugly"™ Purple paint.
"Pound to fit..paint to match"
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1973 Chevrolet Vega

Re: Pump gas street Vega/Monza..combo/timeslips

Postby waybad » Sun Dec 04, 2016 10:33 pm

72 Vega GT ls1 with ls6 intake,243 heads, cam= 236/236-595/595-ls112. Megasquirt2 extra cpu, 12bolt-3.08 gears,4 wheel discs, 2004r trans.3500 stall(lock up converter), vintage air,,,15x8,235x60,,15x6,195x60,, pontiac ralleys, 3'' exhaust, into catalytic converters, into x pipe, then down to 2 1/2'' mufflers and tailpipes( real quiet),, no frame connectors or roll bars,,weight with me is 3100lbs scaled at Beach Bend


60'.....1.60
330....4.72
1/8....7.37
mph...94.09
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby chevyart » Mon Dec 05, 2016 10:59 am

hey evl. ill be curious to see what your 1/4 ET's will be. i only made my calculations based on my nova drag car. with old engine it ran a 10.95 in the 1/4 consistently and a 6.94 in the 1/8 mile(same time slip) my car ran very consistent ETs all the time, and i was at ATCO dragstrip in new jersey, and that track is a few feet BELOW sea level.. i hope your nice ride does go the 10.4s in the quarter. thats a nice et for your car. art
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby Monza Harry » Mon Dec 05, 2016 11:17 am

chevyart wrote:10.4s in the quarter. thats a nice et for your car. art
Art that is a Great time for any street(ish) car I am hoping for 12's and that is keeping me broke and I can't even drive mine! Harry
I'm not a hoarder I'm a preservationist 78 Monza Spyder (Soon To Be 2+2 with Spoilers)
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby EVL VEGA » Mon Dec 05, 2016 11:43 am

chevyart wrote:hey evl. ill be curious to see what your 1/4 ET's will be. i only made my calculations based on my nova drag car. with old engine it ran a 10.95 in the 1/4 consistently and a 6.94 in the 1/8 mile(same time slip) my car ran very consistent ETs all the time, and i was at ATCO dragstrip in new jersey, and that track is a few feet BELOW sea level.. i hope your nice ride does go the 10.4s in the quarter. thats a nice et for your car. art


Barona Race track is at 1719.2 ft above sea level. It was also a hot day. Around 80F air temp so the track was much hotter.
I'd like to run on a longer track but the closest 1/4 mile track is about 3 hours away in Los Angeles (without a trailer and no traffic).
I doubt I'll ever end up going there.

All i know is I'm a little over 4 tenths away from needing a whole lot more safety gear. :mrgreen:
EVL VEGA
'73 Vega Hatchback (former Super Gas car)
406 SBC, AFR 210 Eliminator Heads, 9:1 comp, pump gas, 328RWHP/412RWTQ (old heads, no N2O 1/17/04), 6.86 @ 100.8 in 1/8th (No N20 9/4/16), Mike's Trans TH400 (reverse manual), 5000 stall, 12 bolt, 35 spline strange axles, 4.33 gears, spool, hipster transbrake, linelock, backhalved, Alston 3 link, 100 shot NX Hitman+ kit, LC1 Wideband sensor, 31x18.5 MT Sportsman Pros, "Plum Ugly"™ Purple paint.
"Pound to fit..paint to match"
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Location: San Diego, CA

1973 Chevrolet Vega

Re: Pump gas street Vega/Monza..combo/timeslips

Postby blownvega1 » Sun Dec 11, 2016 2:22 pm

running Sunoco ultra 94 I have ran 5.68 in the 1/8 @ 129 mph have not been pushing power through the 1/4 but it has been in the 9.50 's I am using 3.42 gears and 29.5 slicks with @ 14 psi boost I did miss the tune a little bit near the end of the season and torched some pistons ,next year I'll work more with drag radials because I like to drive to the track and go no taking exhaust off or changing tires. car does cruise down the highway very nice little loud but that's alright.
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Re: Pump gas street Vega/Monza..combo/timeslips

Postby 6D9 » Sun Dec 11, 2016 4:29 pm

blownvega1 wrote:running Sunoco ultra 94 I have ran 5.68 in the 1/8 @ 129 mph have not been pushing power through the 1/4 but it has been in the 9.50 's I am using 3.42 gears and 29.5 slicks with @ 14 psi boost I did miss the tune a little bit near the end of the season and torched some pistons ,next year I'll work more with drag radials because I like to drive to the track and go no taking exhaust off or changing tires. car does cruise down the highway very nice little loud but that's alright.


CAR LOOKS AND RUNS KILLER!!!
72 Vega GT...406 sbc..TH700R4...3.42 gear...235/60/15 MT DR's....11.54 at 118.6..Dad's car
72 Vega GT...4cyl..4 speed..all stock
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