Building a fairly radical street / strip 69; got a few questions
10-11-2015, 08:12 PM
#1
Safety Car
Thread Starter
Building a fairly radical street / strip 69; got a few questions
What is a big block 69 going to weigh with a full interior + a CM 8.50 cage? The block is an aftermarket Bowtie + approx 80 lbs? / Tom's 12 bolt kit with all their highest HP stuff +20?. I am going to remove little things like the heater core / radio / speakers / spare tire carrier, etc. Other than that is will pretty much have all the stock stuff on it.
How big of a tire can I get under a 69 using offset trailing arms ?
Btw- Here is the engine going in the car:
http://www.racingjunk.com/Drag-Racin...ood-parts.html
How big of a tire can I get under a 69 using offset trailing arms ?
Btw- Here is the engine going in the car:
http://www.racingjunk.com/Drag-Racin...ood-parts.html
10-12-2015, 06:56 AM
#4
Melting Slicks
I got 11s, 5.o b/s with offsets and a narrow spring, but they stick out 1 inch beyond the fender of the 6t8.
Weighed a 68 BBC coupe, full interior, 4 speed at 3100. T
Weighed a 68 BBC coupe, full interior, 4 speed at 3100. T
10-12-2015, 08:36 AM
#5
Safety Car
Thread Starter
How tall is the tire? and if you had to guess how tall of a tire can be run without having to cut / alter the body ?
10-12-2015, 08:48 AM
#6
Burning Brakes
At that power level it would probably be cheaper to put in a 4 link and a 9 inch rear end.That will be one serious street machine!I have a friend with a race car shop that back halved a 79 vette that ran 7.90s. He replaced a 12 bolt Tom's unit with the 4 link.
10-12-2015, 10:00 AM
#7
Safety Car
Thread Starter
If I just wanted to go fast I would buy another race car. I raced the car in my sig for 4 years- I am hoping to do something pretty cool: I am thinking a 15-1, 632 in a factory looking car with a Lenco 4 speed ought to be pretty cool.
10-12-2015, 10:25 AM
#8
Team Owner
I agree 100%... but; I am building a bit of a "theme" build. This car will be my interpretation of "what if" Zora and crew decided to build a factory drag car in 1969. I am going to do my best to disguise the 632 as on old school L-88, bird cage carb cover- L-88 (+2 in.) hood, old school valve covers, stock water pump, alternator, rallye wheels, etc, etc.
If I just wanted to go fast I would buy another race car. I raced the car in my sig for 4 years- I am hoping to do something pretty cool: I am thinking a 15-1, 632 in a factory looking car with a Lenco 4 speed ought to be pretty cool.
If I just wanted to go fast I would buy another race car. I raced the car in my sig for 4 years- I am hoping to do something pretty cool: I am thinking a 15-1, 632 in a factory looking car with a Lenco 4 speed ought to be pretty cool.
It seems to me that the wheels with stockish suspension was kind of limited to about 4 1/2 or 5 inch back spacing wheels
10-12-2015, 11:46 AM
#9
Safety Car
Thread Starter
Off set trailing arms are kind of a phoney gimick because the frame rail is the limiting factor. So I used 10 X 28 Goodyear slicks on my Vette back when I was into drag racing it HD I think from VB&P trailing arms.
It seems to me that the wheels with stockish suspension was kind of limited to about 4 1/2 or 5 inch back spacing wheels
It seems to me that the wheels with stockish suspension was kind of limited to about 4 1/2 or 5 inch back spacing wheels
Been a while since we have run across each other here
10-12-2015, 12:45 PM
#11
Team Owner
I went to fender flares and I run 12X28 road racing goodyear slicks or my 345 width street tires.
I had tire and fender rub with my 420# mono spring so i had VB&P make me a 520# Jim (427hotrod) runs something similar
This looks pretty subtle doesn't it? 12X28 slicks
10-12-2015, 12:51 PM
#12
Team Owner
I was going to ask you if you are going to Bakersfield Oct. 23-25 or do you compete in Good guys events? I will be there and hopefully pit crewing on a nitro-methane front engined dragster running the Jr fuel class 
http://www.museum.nhra.com/apcm/temp...4855&zoneid=41
http://www.museum.nhra.com/apcm/temp...5067&zoneid=41
http://www.museum.nhra.com/apcm/temp...4855&zoneid=41
http://www.museum.nhra.com/apcm/temp...5067&zoneid=41
Last edited by gkull; 10-12-2015 at 01:23 PM.
10-12-2015, 01:18 PM
#13
Burning Brakes
Extremely cool! George it is good to see you back and I'm sure I will have some questions for both you and Mike. Mike can you pm contact information? I don't want to interfere with this thread.
Thanks,
Dave
Thanks,
Dave
10-12-2015, 01:46 PM
#14
Safety Car
Thread Starter
Yes the car will be street legal and driven on the street:
Here is a little video the guy I bought the engine from sent me
George; I always liked your vett and thinks it looks pretty cool. I don't do any of the events anymore. I sold my race car a year ago and spend 90% of my free time with my kids. This new car is just something for me to wrench on and take to car shows and the track a half dozen times a year.
Here is a little video the guy I bought the engine from sent me
George; I always liked your vett and thinks it looks pretty cool. I don't do any of the events anymore. I sold my race car a year ago and spend 90% of my free time with my kids. This new car is just something for me to wrench on and take to car shows and the track a half dozen times a year.
10-12-2015, 02:07 PM
#16
Team Owner
It depends on how tall of a tire you want to run.. I was able to run 15 x 10 wheels with 1 inch flares.. I was running 5 inch backspacing and no parking brake. I had to slightly trim the frame for the tire not to hit it... I was running 28 x 10.5W x 15 MT ET Drag's..
If you don't want to trim the frame, don't exceed 4.5 inch backspacing or use 26 inch tall tires instead of 28 inch tall ones.
Unless you want to do major frame modifications, you can't run more than 5 inch backspace.. Without the flares, the 10.5W's would stick out by almost an inch already.. So, with 4.5 inch backspacing and no flares, you are looking at the tires sticking out by 1.5 inches.
If you want to run flares, then you just make the flares based on the tire you want to run.. You will not fit anything larger than regular 10.5's (not W) under the fenders without flares.
Don't forget that above setup (see picture) required minor frame trimming..
I was running Tom's 12 bolt with spool and the bigger axles and half shafts (with 1480 series u-joints)... basically the same type setup you are looking for..
If you don't want to trim the frame, don't exceed 4.5 inch backspacing or use 26 inch tall tires instead of 28 inch tall ones.
Unless you want to do major frame modifications, you can't run more than 5 inch backspace.. Without the flares, the 10.5W's would stick out by almost an inch already.. So, with 4.5 inch backspacing and no flares, you are looking at the tires sticking out by 1.5 inches.
If you want to run flares, then you just make the flares based on the tire you want to run.. You will not fit anything larger than regular 10.5's (not W) under the fenders without flares.
Don't forget that above setup (see picture) required minor frame trimming..
I was running Tom's 12 bolt with spool and the bigger axles and half shafts (with 1480 series u-joints)... basically the same type setup you are looking for..
Last edited by GrandSportC3; 10-13-2015 at 09:24 AM.
10-12-2015, 02:45 PM
#17
Team Owner
Yes the car will be street legal and driven on the street: I don't do any of the events anymore. I sold my race car a year ago and spend 90% of my free time with my kids. This new car is just something for me to wrench on and take to car shows and the track a half dozen times a year.
Only once in my life have i ever got to drive a true 1000+ HP street car. 69 prostreet Camaro. T
o me it was kind of tempramental and I felt like you were just calling the cops from miles around it had next to no mufflersDo they sell E-85 where you live? Because you can run that in race/street motors
10-12-2015, 03:21 PM
#18
Safety Car
Thread Starter
Thanks Oliver; that is the exact info I was looking for.
No parking brake.
George: The engine is 15 to 1 compression and yes they sell E85 from the pump here. If not for that fact I would not run so much compression. I have a few buddies who run E85 and it is perfect for this type of application, makes great power, runs significantly cooler than gas. Can you imagine trying to run a 15 to 1 632 on the street using gasoline ?
I am going to run good mufflers on this car
No parking brake.
George: The engine is 15 to 1 compression and yes they sell E85 from the pump here. If not for that fact I would not run so much compression. I have a few buddies who run E85 and it is perfect for this type of application, makes great power, runs significantly cooler than gas. Can you imagine trying to run a 15 to 1 632 on the street using gasoline ?
I am going to run good mufflers on this car
10-12-2015, 06:18 PM
#19
Drifting
Running stock trailing arms with 285/40/18 on 9" wide rims with 5" backspace. Measured clearance between tyre sidewall and frame is between 1/4" to 3/8". Sufficient you may think - but frame is 'polished' by sidewall of tyre - presumably from trailing arm flex when cornering hard. Outer edge of tyre fits within fender lip. Thinking that 'stretching' tyre over a wider wheel with same backspace might increase sidewall to frame clearance slightly but at expense of fender lip clearance?
10-12-2015, 10:09 PM
#20
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I agree 100%... but; I am building a bit of a "theme" build. This car will be my interpretation of "what if" Zora and crew decided to build a factory drag car in 1969. I am going to do my best to disguise the 632 as on old school L-88, bird cage carb cover- L-88 (+2 in.) hood, old school valve covers, stock water pump, alternator, rallye wheels, etc, etc.
JIM