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#26 |
I have car A.D.D.
Join Date: Feb 2009
Location: Greeley, Northern Colorado
Posts: 4,147
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Re: is cutting 2 drop coils a bad idea?
Smaller tires would lower the ride height but will also change your tire gaps and such.
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-Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here. |
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#27 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
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#28 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: is cutting 2 drop coils a bad idea?
Also remember this when it comes to tire size, shortening the tires is going to greatly increase engine speed.
For instance I belive the stock tire for your truck was a 235/75r15 that is 28.88 inches in diameter, with a 3.55 rear end and a TH700R4 you will run 2,111 RPM @ 70 MPH, If you go with a 26.88" tire on the same truck, you raise the RPM's to 2,269 RPM That is a 158 RPM increase. This has a lot to do with why big wheels have become so popular because they allow you to run a short side wall tire, achieve a look and keep your engine rpm's down and thus keep your fuel mileage up.
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#29 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: is cutting 2 drop coils a bad idea?
It is really a matter of personal preference, but putting too small of a tire on your truck can really make it look weird.
Let me just throw a thought at you though on the subject... I have noticed that you are pretty fixated on lowering the truck substancially, you will be better served taking baby steps, getting the truck going with the parts you have now, get it assembled where you can look at it, then worry about the sizing of your tires and wheels, as well you will need to have the truck assembeled to measure for offset on your wheels as well.
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#30 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
well the tires that are on not a really badly dry rotted. so i need tires
would 225/60-r15 be to small you think? 25.60 inch diameter. thats only like 3 inch difference than the 235/75-r15s i have on now. Last edited by dbmx66; 11-28-2009 at 01:44 AM. |
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#31 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: is cutting 2 drop coils a bad idea?
you have a 700R4? and what rear end ratio?
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"He used to be a pretty nice feller, now he's a welder!" |
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#32 |
I have car A.D.D.
Join Date: Feb 2009
Location: Greeley, Northern Colorado
Posts: 4,147
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Re: is cutting 2 drop coils a bad idea?
I am dropped a little over 5/7 running Cooper Cobra 245/60/15 And I don't think I would go any smaller tire wise.
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-Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here. Last edited by Driveway Dreams; 11-28-2009 at 01:51 AM. Reason: pic |
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#33 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
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#34 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
i saw this truck on here. what size you think they are?
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#35 | |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: is cutting 2 drop coils a bad idea?
Quote:
With the 235/75R15's and 3.73's you will pull 3,093 RPM @ 70 MPH With the 225/60R15's and 3.73's you will pull 3,429 RPM @ 70 MPH if you go to 4.11's with the 225/60R15's you will pull 3,778 RPM @ 70 mph. If you were to put a DOT slick on the back that is 30" tall you will pull 2,925 RPM @ 70 MPH with 3.73's or 3,224 RPM with 4.11's
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"He used to be a pretty nice feller, now he's a welder!" |
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#36 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: is cutting 2 drop coils a bad idea?
I think they are too small, that's what size I think they are.
Like MrBeast said, you are getting way ahead of things. Get your truck back together and see where you are before you starting cutting springs and buying tires.
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#37 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
i plan on running much bigger tires on the rear. maybe 30 or 31 by like 12.50s maybe.
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#38 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
thanks n2trux, i think thats what im gonna do. just take my time and do everything right the first time. thanks for all the help, i really appreciate it.
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#39 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: is cutting 2 drop coils a bad idea?
We know it's exciting researching while your putting it together. Just learn from our experience by doing things in the right order.
Trust me when I tell you it's a lot less work to cut your springs twice than it is to replace them because you cut too much.
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#40 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
yea i understand.
thanks again. |
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#41 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: is cutting 2 drop coils a bad idea?
Out of curiosity, what motor are you going to be running.
And something you might want to think about is running a 4L60E it will give you overdrive, and it will seriously get you an improvement in fuel mileage.
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"He used to be a pretty nice feller, now he's a welder!" |
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#42 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
its an all roller, 11.3:1 compression, 355 stroker.
ported heads and intake, 750 carb, scat lightweight crank eagle rods, speed pro pistons, comp extreme energy .550 hydraulic roller cam. full msd ignition, electric water pump and march performance belts and pulleys soon to come. ![]() Last edited by dbmx66; 11-28-2009 at 02:30 AM. |
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#43 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: is cutting 2 drop coils a bad idea?
Daaang! Whats your estimated HP/TQ
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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#44 |
Registered User
Join Date: Feb 2003
Location: Calgary Canada
Posts: 556
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Re: is cutting 2 drop coils a bad idea?
Here is one of my trucks when i had some 15" rims and tires on it. The fronts were 225/60/15 the rears were 295/50/15. Rims were 8" wide front and 10" rear. The drop was about 5" front, 5" rear. I was happy with this combo.
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If you can't rock the roads with your bumpers 1/2" off the ground, you're nowhere near low enough! ![]() |
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#45 |
Registered User
Join Date: Feb 2003
Location: Calgary Canada
Posts: 556
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Re: is cutting 2 drop coils a bad idea?
On my other truck i ran a 225/50/15 front and a 265/50/15 rear. I had a 7/12" static drop and my front a-arms were about half an inch off the ground. It wasn't the best setup, but i was low, until i bagged it. I don't miss those days.
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If you can't rock the roads with your bumpers 1/2" off the ground, you're nowhere near low enough! ![]() |
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#46 | |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,211
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Re: is cutting 2 drop coils a bad idea?
Quote:
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" That didnt make it any newer " " Dont antique the equipment " |
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#47 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
Posts: 2,193
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Re: is cutting 2 drop coils a bad idea?
Before I bagged my 76 Blazer, I ran a static drop for about three years with drop spindles and I cut one loop off my coils. Cutting one loop gave me about 2 1/2 inches more drop. I was running factory 15x8 chev rallies at the time with 245/60/15 tire on the front and I had about 2 3/4" inches of road clearance to my stock control arm. It was a little scary for city rut driving, but I left my factory bump stops in which prevented too much travel which would have caused the control arm to bottom out. It actually rode fine considering minimal susp travel, and I didn't have a major tire wear issue from being a little off camber.
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#48 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
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#49 |
Registered User
Join Date: Aug 2009
Location: PA
Posts: 883
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Re: is cutting 2 drop coils a bad idea?
hey slammed'87 both those trucks look nice. i think im gonna go with the same size tires u had in the first picture.
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