Questions about "Z"ing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hotrodhomi · 12-04-2006, 02:05 PM

do you have to cut the floor for a 2 3/4" Z? Will the distibutor hit the firewall? Will a crossmember drop give you the same end result without the headaches?

FnLow69 · 12-05-2006, 02:08 AM

no you shouldnt have to cut the floor, and if it an HEI distibutor it probly will hit. not sure on the crossmember mod.

gringoloco · 12-05-2006, 03:51 AM

Croossmember drop- at more than 1 3/8" or so you run into a whole other set of headaches.

SCOTI · 12-05-2006, 04:05 PM

Quote:

Originally Posted by gringoloco

Croossmember drop- at more than 1 3/8" or so you run into a whole other set of headaches.

My crossmember would not even allow for a 1 3/8" notch. It would have required grinding the lower control arm outer u-bolt nut in half.

1 1/8" was all I could notch & maintain 1/8" clearance on all steering linkage as it moved through it's arc. Every vehicle (and potential parts combo) is possibly different & should be verified.

pharcyde05 · 12-05-2006, 05:27 PM

did

pharcyde05 · 12-05-2006, 06:09 PM

did a 2.5 and havent hadt to cut floor yet buts its not on road might have clearance issuses later
but the hei dist fits its close and it might be tight when changing the cap

hotrodhomi · 12-05-2006, 10:09 PM

so it sounds like a Z would get a bigger drop with less headaches as long as I don't go more than 2".

XXL · 12-07-2006, 04:31 PM

Quote:

Originally Posted by hotrodhomi

so it sounds like a Z would get a bigger drop with less headaches as long as I don't go more than 2".

Less headaches? I don't think it's fair to draw that conclusion. Yes, you can get a bigger drop... but there are certainly challenges with this method as well.

SCOTI · 12-07-2006, 07:42 PM

Quote:

Originally Posted by XXL

Less headaches? I don't think it's fair to draw that conclusion. Yes, you can get a bigger drop... but there are certainly challenges with this method as well.

I agree. Same hassle but more drop.

The 'Z' also requires a competent weld from someone that knows what they're doing. The crossmember notch can be pulled off by a novice welder.

BK · 12-25-2006, 03:07 AM

ran a 4" z. i didnt have an HEI dist. but didnt have problems because i used the front set of motor mount holes on the crossmember, and drilled one more hole on each side. it moved the engine ahead 3" and gave plenty of clearance. i did have to cut alot of the floor, for the 700R4.

laidout · 12-25-2006, 05:50 PM

i lowerd my motor down 2 inchs i just need to notch my crossmember to go the full 2 inchs my dizzy is in the stockish area

pharcyde05 · 12-26-2006, 02:27 PM

I started building my trans cross memeber last fri only worked on ita few hours going to try and finish it up tonight i had to cut out floor probley going to raise tunnel 3 in that will give me more than enuff clearance
if i get a chance to work on it tonight i will tryand get some pics up tomarrow

12-04-2006, 02:05 PM	#1
hotrodhomi Registered User Join Date: Apr 2004 Location: Sacramento Posts: 3,737	Questions about "Z"ing do you have to cut the floor for a 2 3/4" Z? Will the distibutor hit the firewall? Will a crossmember drop give you the same end result without the headaches? __________________ '72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht

12-05-2006, 02:08 AM	#2
FnLow69 Registered User Join Date: May 2005 Location: Washington Posts: 848	Re: Questions about "Z"ing no you shouldnt have to cut the floor, and if it an HEI distibutor it probly will hit. not sure on the crossmember mod. __________________ [PROJECT] FnLow69- 69 C-10 Full frame & layin' doors [PROJECT] Laidout53 - 53' Dodge Pickup, Full Kustom Build [PROJECT] "Hot Rod" 1931 Model A Bonneville style "Dream as if you'll live forever, Live as if you'll die today" ~ James Dean

12-05-2006, 03:51 AM	#3
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Questions about "Z"ing Croossmember drop- at more than 1 3/8" or so you run into a whole other set of headaches. __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

12-05-2006, 05:27 PM	#5
pharcyde05 Senior Member Join Date: Mar 2006 Location: modesto CA Posts: 239	Re: Questions about "Z"ing did __________________ http://www.cardomain.com/ride/2461088

12-05-2006, 06:09 PM	#6
pharcyde05 Senior Member Join Date: Mar 2006 Location: modesto CA Posts: 239	Re: Questions about "Z"ing did a 2.5 and havent hadt to cut floor yet buts its not on road might have clearance issuses later but the hei dist fits its close and it might be tight when changing the cap __________________ http://www.cardomain.com/ride/2461088

12-05-2006, 10:09 PM	#7
hotrodhomi Registered User Join Date: Apr 2004 Location: Sacramento Posts: 3,737	Re: Questions about "Z"ing so it sounds like a Z would get a bigger drop with less headaches as long as I don't go more than 2". __________________ '72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht

12-25-2006, 03:07 AM	#10
BK BK Built Join Date: Aug 2004 Location: Oroville, WA Posts: 478	Re: Questions about "Z"ing ran a 4" z. i didnt have an HEI dist. but didnt have problems because i used the front set of motor mount holes on the crossmember, and drilled one more hole on each side. it moved the engine ahead 3" and gave plenty of clearance. i did have to cut alot of the floor, for the 700R4.

12-25-2006, 05:50 PM	#11
laidout Active Member Join Date: Feb 2004 Location: Bartlesville,ok Posts: 275	Re: Questions about "Z"ing i lowerd my motor down 2 inchs i just need to notch my crossmember to go the full 2 inchs my dizzy is in the stockish area Attached Images

12-26-2006, 02:27 PM	#12
pharcyde05 Senior Member Join Date: Mar 2006 Location: modesto CA Posts: 239	Re: Questions about "Z"ing I started building my trans cross memeber last fri only worked on ita few hours going to try and finish it up tonight i had to cut out floor probley going to raise tunnel 3 in that will give me more than enuff clearance if i get a chance to work on it tonight i will tryand get some pics up tomarrow __________________ http://www.cardomain.com/ride/2461088

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