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Re: Considering a new chassis, weight savings?
[Re: tubtar]
#1294494
09/01/12 07:07 AM
09/01/12 07:07 AM
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Joined: Oct 2003
Posts: 740
K&Q va.
BIGBLOCK_KAT
super stock
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super stock
Joined: Oct 2003
Posts: 740
K&Q va.
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Greg, awhile back ...thinking about 6mo. I seen a guy in Indiana had Jimmys old Chassis out of his '68 dart. I know different body style, just throwing it out there.  oops forgot to mention it was for sale cheap and I believe c/m.
Last edited by BIGBLOCK_KAT; 09/01/12 07:16 AM.
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Re: Considering a new chassis, weight savings?
[Re: BIGBLOCK_KAT]
#1294495
09/01/12 09:34 AM
09/01/12 09:34 AM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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Quote:
Greg, awhile back ...thinking about 6mo. I seen a guy in Indiana had Jimmys old
Chassis out of his '68 dart. I know different body style, just throwing it out there. oops forgot to mention it was for sale cheap and I believe c/m.
Any idea where it was advertised? If the early/late Darts are the same width, it might just work!
Tubtar, I did get my mold back, so we should connect and come up with a plan!
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Considering a new chassis, weight savings?
[Re: BIGBLOCK_KAT]
#1294498
09/01/12 01:54 PM
09/01/12 01:54 PM
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Joined: Dec 2005
Posts: 11,551
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,551
Fulton County, PA
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Years ago, Herb McCandless gave me some advice, and I paraphrase -
"Money spent making the car lighter is always better spent than money spent making more horsepower; it don't break, it don't wear out and you don't have to fix it every winter."
I still believe that was good advice.
If the results don't match the theory, change the theory.
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Re: Considering a new chassis, weight savings?
[Re: CMcAllister]
#1294499
09/01/12 03:19 PM
09/01/12 03:19 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Years ago, Herb McCandless gave me some advice, and I paraphrase -
"Money spent making the car lighter is always better spent than money spent making more horsepower; it don't break, it don't wear out and you don't have to fix it every winter."
I still believe that was good advice.
Very good advise.... and its easier on all the other parts
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Re: Considering a new chassis, weight savings?
[Re: poppaj]
#1294501
09/01/12 06:21 PM
09/01/12 06:21 PM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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Quote:
Guess I am a hillbilly but I would build a alloy wedge with more power. poppaj 
WE think alike.
Actually it makes sense from the standpoint that I am pushing what I have as hard as a B1 motor making more power. I run a .775 lift cam, very big valve springs, and 7400 rpm in the lights. I would think a 550 cube B1 motor could easily make the 100 extra hp within those numbers. I have a very good crank, capable of going to 4.32 stroke at 2.2 rod size, which is a better deal than the 2.375 bearings anyway.
Part of the story of why this possible new chassis project came up is My grandson and myself are building a hotrod together, and I do enjoy building chassis. But it would save me a ton of time to go with the alloy block and either B1 stuff or struts.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Considering a new chassis, weight savings?
[Re: poppaj]
#1294502
09/01/12 07:11 PM
09/01/12 07:11 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Guess I am a hillbilly but I would build a alloy wedge with more power. poppaj
Maybe .... but IF you have to play in a weight class
your sorta stuck.... but if not then why not build
a lighter chassis to start with.... I very seldom see
people go back and tear the chassis out but they also
complain that they wish the car was lighter and say
I SHOULD HAVE gone moly.... this is just what I have
seen and heard...... to each their own
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Re: Considering a new chassis, weight savings?
[Re: camastomcat]
#1294505
09/01/12 11:50 PM
09/01/12 11:50 PM
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Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,996
Frostbitefalls MN (Rocky&Bullw...
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Right now the car is good to 8.50, but only needs a driver cage to go to the next level. The weight savings of the block alone may be worth a tenth and a half, as a number of engine builds I have known about haven't lost ANY power going to an alloy block, and some got faster. The question now is what is the strut front worth weight wise over what I have now, which isn't too heavy due to light brakes. Here is a pic of the cage as it was built.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Considering a new chassis, weight savings?
[Re: gregsdart]
#1294507
09/02/12 12:29 AM
09/02/12 12:29 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Right now the car is good to 8.50, but only needs a driver cage to go to the next level. The weight savings of the block alone may be worth a tenth and a half, as a number of engine builds I have known about haven't lost ANY power going to an alloy block, and some got faster. The question now is what is the strut front worth weight wise over what I have now, which isn't too heavy due to light brakes. Here is a pic of the cage as it was built.
A strut front end would be close to 25# off the front
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Re: Considering a new chassis, weight savings?
[Re: gregsdart]
#1294508
09/02/12 06:12 AM
09/02/12 06:12 AM
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Joined: Jan 2003
Posts: 2,916
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,916
A shed in England
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Quote:
The weight savings of the block alone may be worth a tenth and a half, as a number of engine builds I have known about haven't lost ANY power going to an alloy block, and some got faster.
FWIW we only saved around 70lb when moving from a mega blocked 528 to a KB block 572. I was convinced the scales were off and checked it on another set, we had the same 70lb difference give or take. Still it was weight off in the right place. HTH's 
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Considering a new chassis, weight savings?
[Re: gregsdart]
#1294510
09/03/12 02:03 PM
09/03/12 02:03 PM
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Joined: Jan 2003
Posts: 2,916
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,916
A shed in England
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Quote:
Thanks everybody. Tig the fact that you only saved 70 lbs is an eye opener.  I would have thought there was a gauranteed 100 lbs minimum.
Yep I was a little surprised to say the least, was expecting around 100lb too. The heavier rotating assembly is a given and extra oil pan capacity yeah, but 30lb! I'll have the mega block stripped pretty soon (the KB is already on the stand) maybe I should weigh them both
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Considering a new chassis, weight savings?
[Re: gregsdart]
#1294512
09/03/12 11:36 PM
09/03/12 11:36 PM
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Joined: Nov 2010
Posts: 914
tn
robnbird
super stock
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super stock
Joined: Nov 2010
Posts: 914
tn
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Quote:
My reason for sticking with ladder bars and MS is budget. I can notch and weld MS but not moly, and the entire 4 link package is what, another $800 with brackets?  spend the $800. now. 1 year down the road you will say I wish I had spent that extra money.
I do have another body which may end up lighter by itself, as the old one has three coats of paint on it.
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Re: Considering a new chassis, weight savings?
[Re: robnbird]
#1294513
09/05/12 01:12 AM
09/05/12 01:12 AM
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Joined: Feb 2006
Posts: 698
Alberta Canada
Edge
mopar
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mopar
Joined: Feb 2006
Posts: 698
Alberta Canada
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The best advice I can offer is to set a target and stick to it. I started with the plan to go with an aluminum B1 motor because I wanted to go a little faster ( that was the first plan) from there I decided with the extra power a four link would be nice instead of the ladder bars, then it seemed to make sense to do struts and finally I ended up with a 25.1E chassis. The down side I have not raced for two years and I could have been having alot of fun with my old backhalf Duster. I even started building a more powerful engine and finally gave my head a shake and set a target and now I am sticking to it.
76 Duster
work in progress
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