|
Re: 273 FAST cars?
[Re: HotRodDave]
#203535
01/25/09 08:35 PM
01/25/09 08:35 PM
|
Joined: Jan 2003
Posts: 14,494
So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,494
So. Burlington, Vt.
|
the killers for performance on a big cube motor in that combo are, the small carb, very small heads, small intake manifold, and poor exhaust.
while you can use any year or size OE block......the heads, intake manifold, and exhaust manifolds MUST be the correct pieces for the original combination.
the carb doesnt have to be the correct part number, but it does have to at least start out as something that was the same size as original.......and in this case, that means "small".
trans and rear axles arent going to be the problem.
making power with be the problem.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
|
|
|
Re: 273 FAST cars?
[Re: fast68plymouth]
#203536
01/26/09 12:31 AM
01/26/09 12:31 AM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
I just went back over there to look at the car and noticed how small the carb is and had to come back and read the rules. It is very small and I am sure it would be a big handy cap but NASCAR amateur hour (whatever it is called)makes some serious HP with a smaller carb. The rules state there will be a visual inspection with the air cleaner off, if I have the throat/venturi area ported bigger would that DQ me? Milling air horns is clearly out lawed so  Can I install bigger throttle blades? Another big problem would be the 13 inch bycycle tires, if I was stuck with them (13s)there would be no point bothering to build the car. Were 14s optional on that car? Any one know how much a car like that weighs? I think they (early A-bodys)are light, that would be there big saveing grace, if they are heavier than they look that too could be a deal breaker. I am not thinking I can beat a certain black Hemi car but I don't want to show up and run a 14 second quarter either.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203537
01/26/09 12:37 AM
01/26/09 12:37 AM
|
Joined: Jan 2003
Posts: 14,494
So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,494
So. Burlington, Vt.
|
if thats what you want to build.....just build it.
how quick you could make something like that run is pure speculation until you build one and show up at the track with it.
my personal opinion is that its about as poor of a FAST combo as you could find........but opinions are just like....well....you know.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203539
01/26/09 01:09 AM
01/26/09 01:09 AM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Quote:
Another big problem would be the 13 inch bicycle tires, if I was stuck with them (13s)there would be no point bothering to build the car. Were 14s optional on that car?
Yes, 14's were optional in 65.
|
|
|
Re: 273 FAST cars?
#203540
01/26/09 09:24 AM
01/26/09 09:24 AM
|
Joined: Jan 2003
Posts: 7,489
Minnesota
Hemi_Joel
master
|
master
Joined: Jan 2003
Posts: 7,489
Minnesota
|
You could run G70-14's on 14x6 rims. You can bore out the carb as much as it will take.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
|
|
|
Re: 273 FAST cars?
[Re: CJK440]
#203542
01/26/09 10:23 AM
01/26/09 10:23 AM
|
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
Rapid340
top fuel
|
top fuel
Joined: Sep 2004
Posts: 2,091
oberlin, Ohio
|
Mine weighs 3060 and I havent done much to reduce it.
1971 Factory Appearing Duster 340 11.000 @ 122 mph
|
|
|
Re: 273 FAST cars?
[Re: CJK440]
#203543
01/26/09 10:35 AM
01/26/09 10:35 AM
|
Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
|
master
Joined: May 2005
Posts: 6,446
NJ-USA
|
Quote:
Quote:
I believe a purpose built FAST Duster could weigh 3000 lbs without a driver.
2950  and not all that purpose built either.
That's pretty light, indeed. With the new build you should be putting some hurt on some of the "heavies".
MB
|
|
|
Re: 273 FAST cars?
[Re: CJK440]
#203544
01/26/09 12:09 PM
01/26/09 12:09 PM
|
Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
|
master
Joined: Nov 2003
Posts: 5,160
Texas
|
My weight was just a guess so with this input from owners I would think another 100 lbs at least could come off so we are at 2850 without a driver. We are starting from scratch so lets build a 72 Demon and take advantage of the snorkle scoop for some fresh air. A 416 inch engine should be able to make 1.15 Hp per cubic inch fairly easily which is 475 flywheel Hp. So with a 200 lbs driver we have a 3050 lbs car with 475-500 Hp. Your launching this 3050 lbs car on the same tire and wheel size that HemiJoel has run 10's on in a car that weighs at least 600 lbs more than this Demon. Could get very interesting. This package with 500 Hp and a 1.60 60'might run a 10.
Getting old just means you were smarter than some and luckier than others.
|
|
|
Re: 273 FAST cars?
[Re: dannysbee]
#203545
01/26/09 01:13 PM
01/26/09 01:13 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
I am thinking the early a is a little lighter and shorter wheel base.
The only other reason I am think about this car is because it is complete and would need a lot of work and not as much money as buying a complete 340 car then modyfing it.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203547
01/26/09 05:03 PM
01/26/09 05:03 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
How do they decide if the idle sounds stock? Do they hook up a vacume gauge?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: 273 FAST cars?
[Re: B1Fish540]
#203548
01/26/09 05:09 PM
01/26/09 05:09 PM
|
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
I just had another thought, I have a nice 318 short block SCAT I beams .030 KB167 pistons in my 68 cuda, has 302 heads right now. If those 273 heads are only going to flow enough to make say 450hp (could run 2.02 valves in a 318) might be just as well off useing that instead of building a huge inch motor that will make way too much tq any how. Mabey I will do some testing with that motor in that car before I yank it for it's own future stroker.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203549
01/26/09 05:54 PM
01/26/09 05:54 PM
|
Joined: Jan 2006
Posts: 419
NY
F1Scamp
mopar
|
mopar
Joined: Jan 2006
Posts: 419
NY
|
Quote:
How do they decide if the idle sounds stock? Do they hook up a vacume gauge?
No vacuum gauge, it is more of an experience thing. I have heard a few cars that I and others felt didn't souund anything near stock, but it isn't up to us. I'm not sure if anyone has been called on it though.
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203550
01/26/09 07:03 PM
01/26/09 07:03 PM
|
Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
|
master
Joined: Nov 2003
Posts: 5,160
Texas
|
I would'nt use a 340 car. I would use the straightest, rust free 6 cylinder car I could get my hands on. Strip it of all the undercoat and seam sealer. Delete the radio and heater. Bench seat auto on the column. I think you get the idea.
Getting old just means you were smarter than some and luckier than others.
|
|
|
Re: 273 FAST cars?
[Re: HotRodDave]
#203551
01/26/09 07:58 PM
01/26/09 07:58 PM
|
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
master
|
master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
|
Quote:
I just had another thought, I have a nice 318 short block SCAT I beams .030 KB167 pistons in my 68 cuda, has 302 heads right now. If those 273 heads are only going to flow enough to make say 450hp (could run 2.02 valves in a 318) might be just as well off useing that instead of building a huge inch motor that will make way too much tq any how. Mabey I will do some testing with that motor in that car before I yank it for it's own future stroker.
I would guess, if you wanted to keep displacement low-er due to breathing issues you would still want the bigger bores of a 340/360.
Dwayne helped me out alot with my build(s) and other guys too. For the things he mentioned a 65 Dart isn't a world beater, and in bench racing isn't the best small block combo either. But then again, if you are looking to be top dog, you're barking up the wrong tree.
There are 2 guys who checked out deep into the 10's with the next fastest quite a bit behind, but we're all in it for fun. It would be cool to see something different on the track and I guarantee you'll really enjoy being a part of it.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
|
|
|
Re: 273 FAST cars?
[Re: dannysbee]
#203554
01/26/09 10:59 PM
01/26/09 10:59 PM
|
Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
|
master
Joined: Nov 2003
Posts: 5,160
Texas
|
1972 340 car in Top Banana, black bench seat, auto on the column.
Getting old just means you were smarter than some and luckier than others.
|
|
|
|
|
