350 to 6 banger move - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigjimzlll · 11-04-2004, 08:44 PM

Im going to a 1 piece driveshaft...going with a long shaft th400 tranny and moving the engine from the v8 to 6 cylinder position. Anyone do this? was there any header clearance problems? Hows the distributor to fire wall fit?
any info would be helpful

GMC71k20 · 11-04-2004, 08:50 PM

is this all in the name of going faster?

crazy longhorn · 11-04-2004, 08:51 PM

The HEI dist fits a little snug, but will go in/ out of the eng , with the cap & rotor off. no problems with the headers(especially with an auto trans). I have run both Hedman & Hooker, with stick or auto in I 6 position. best of luck,crazyL

bigjimzlll · 11-04-2004, 09:31 PM

Quote:

Originally Posted by GMC71k20

is this all in the name of going faster?

yea sort of...I need to shorten the length of the one piecs shaft...and it will be better weight transfer....10.94 @ 121.08 is a little fast with a 2 piece shaft.
On a side note...I came in second place in this years track championship points series....im pretty stoked http://reddingdragstrip.net/main.php?p=points

*Slams_58* · 11-04-2004, 10:02 PM

[QUOTE=crazy longhorn]The HEI dist fits a little snug[QUOTE]

here is how snug it fits

bigjimzlll · 11-04-2004, 10:33 PM

thanks guys...I run a small cap MSD...so it should be tons of room

Is it hard to move the towers?

Tx Firefighter · 11-04-2004, 11:17 PM

Quote:

Originally Posted by bigjimzlll

thanks guys...I run a small cap MSD...so it should be tons of room

Is it hard to move the towers?

Each one is three bolts. Real easy to swap them.

You're going to use 6 cylinder towers right? The V8 towers won't bolt into the rear holes without redrilling.

bigjimzlll · 11-05-2004, 12:36 AM

umm.....OK....who has some 6 cylinder towers for sale? I hope to do this with out removing the engine. I will have the tranny out...figured I could just hike the engine up some...and slide it back

Oborny71 · 11-05-2004, 12:49 AM

so you finally hit 10s jim?

bigjimzlll · 11-05-2004, 01:12 AM

LOL...yea the last pass of the year...30MPH tail wind and a DA -300 feet. Not average conditions...they refer to those conditions as "mind shaft" air...all the cars were setting new records

saxmo · 11-22-2004, 03:29 PM

So, am I correct in assuming that my 6 towers will fit a 350 motor mount and mount up properly?

crazy longhorn · 11-22-2004, 05:50 PM

Quote:

Originally Posted by saxmo

So, am I correct in assuming that my 6 towers will fit a 350 motor mount and mount up properly?

Yes, the aftermarket mounts(sb or I6 are the same pn). for the guys that do this swap, do yourself a big favor & drill the holes(eng mount holes...1 ea side) in the eng stands out to 5/8".......this will pretty much eliminate the lineup problems when swapping mounts, & it doesnt affect the strenght of the stand one bit

crazyL

saxmo · 11-22-2004, 06:00 PM

Quote:

Originally Posted by crazy longhorn

Yes, the aftermarket mounts(sb or I6 are the same pn). for the guys that do this swap, do yourself a big favor & drill the holes(eng mount holes...1 ea side) in the eng stands out to 5/8".......this will pretty much eliminate the lineup problems when swapping mounts, & it doesnt affect the strenght of the stand one bit

crazyL

Thanks For info Crazy. Are the mounting holes in the same spot for a 1976 xmember and the 70?

crazy longhorn · 11-22-2004, 06:59 PM

Saxmo, I still have the original crossmember under my 69, so I could say for sure on the mount holes.....Ill leave that for the guys that have swapped them

11-04-2004, 08:44 PM	#1
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	350 to 6 banger move Im going to a 1 piece driveshaft...going with a long shaft th400 tranny and moving the engine from the v8 to 6 cylinder position. Anyone do this? was there any header clearance problems? Hows the distributor to fire wall fit? any info would be helpful __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-04-2004, 08:51 PM	#3
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	The HEI dist fits a little snug, but will go in/ out of the eng , with the cap & rotor off. no problems with the headers(especially with an auto trans). I have run both Hedman & Hooker, with stick or auto in I 6 position. best of luck,crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

11-04-2004, 10:33 PM	#6
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	thanks guys...I run a small cap MSD...so it should be tons of room Is it hard to move the towers? __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-05-2004, 12:36 AM	#8
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	umm.....OK....who has some 6 cylinder towers for sale? I hope to do this with out removing the engine. I will have the tranny out...figured I could just hike the engine up some...and slide it back __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-05-2004, 12:49 AM	#9
Oborny71 Registered User Join Date: Apr 2001 Location: Lincoln, Nebraska Posts: 587	so you finally hit 10s jim? __________________ 67 Chevy SWB - goal of a 1,000 hp weekend cruiser

11-04-2004, 08:50 PM	#2
GMC71k20 Registered User Join Date: Aug 2002 Location: mass Posts: 1,277	is this all in the name of going faster?

11-04-2004, 10:02 PM	#5
Slams_58 Account Suspended Join Date: May 2002 Location: I let ya know as soon as I know Posts: 3,593	[QUOTE=crazy longhorn]The HEI dist fits a little snug[QUOTE] here is how snug it fits

11-05-2004, 01:12 AM	#10
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	LOL...yea the last pass of the year...30MPH tail wind and a DA -300 feet. Not average conditions...they refer to those conditions as "mind shaft" air...all the cars were setting new records __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-22-2004, 03:29 PM	#11
saxmo Senior Member Join Date: Nov 2004 Location: Cleveland, Texas Posts: 298	So, am I correct in assuming that my 6 towers will fit a 350 motor mount and mount up properly? __________________ 2004 Corvette Coupe Black LS1 (daily driver) 1973 Ford Bronco (resto/mod @ 95%) 1991 GMC sportside Pickup Truck, 468c.i.d. ('nuff said) 1997 Ford F150 4.2L 500k+ miles (trash hauler) 2011 Nissan Juke (wife's daily driver) 1943 Ford GPW WWII jeep (waiting its' turn)

11-22-2004, 06:59 PM	#14
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Saxmo, I still have the original crossmember under my 69, so I could say for sure on the mount holes.....Ill leave that for the guys that have swapped them __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

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