Doin a S-15 305 Upgrade - Need help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dezineguy · 03-03-2001, 10:10 PM

Hey Guys & Gals of the truck community...

I am in the process of putting a 305 small block chevy motor into a 86 S-15. It is loads of fun I tell ya. My questions is, if anyone has first hand knowledge or knows where to find free info on all the wiring, and hose routing that will need to be done with this upgrade. I have the engine in, custom mounts made, and the driveline attached. It is getting closer. If anybody can help, please email me @ ormstrup@cb.monarch.net it would be VERY appreciated! I have pics of the work done so far if it helps.

Isaac

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- Human Being - Repoting for Duty -

Silverado6.6 · 03-03-2001, 10:32 PM

Go to http://forum.sportruck.com/wwwthread...oard=trucktech and ask your question there, there are a lot of knowledgable folk on that board that know about SBC s10/s15 conversions. good luck

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'81 3/4 ton Silverado Warmed up 355
TH400 w/shift kit
Corporate 14 bolt w/ 3.73s

Stano · 03-03-2001, 11:16 PM

If you live in Missouri forget it. You will get run off from more inspection stations than you can shake a stick at. Thats my first hand experience. 25 in one day. Had a 83 S-15 with a 350 and a saginaw 3 speed manual tranny, was a runnin SOB. Alot of work for nothing for me.

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Current Project(s)
67 Chevy LWB
68 Suburban (Basket case w/o basket)
71 C-20 Built 327,4spd,4.56 Posi
Daily Drivers
84 K5 Blazer
HiPerf cat., Flowmaster
94 GMC Conversion van
(Wifes ride)
Kickin back in Rolla,Mo.

herauf · 03-04-2001, 03:55 PM

www.jagsthatrun.com

i was thinking about doing mine also...

Primer_72 · 03-04-2001, 04:08 PM

I'd like to see the pics! I may be interested in this conversion sometime in the near future...

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72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350...Lecarra black leather wheel, 69 Chevelle bucket seats, Pioneer system
Dunlop G/T Qualifiers on American Racing rims
3/5 drop via drop springs

Dezineguy · 03-04-2001, 04:16 PM

I have got a bunch done on the truck. I have recently (last night) got the Rochester Carb on, the starter in (1988 Buick Starter - to fit exhaust past) and Started to splice the wiring harness. I am unsure totally which wies need to be spliced into the 305 / 350 harness. Also where all the plumbing for the crab goes. If anyone knows, drop me a line!

I will have pics soon, I don't know how to attach photos to these msgs.. Maybe I can post on a web page.

Primer_72 · 03-04-2001, 08:50 PM

Does anybody know the website of the company that sells brackets and what not for this conversion? I remember seeing it here once before....

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72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350

Looking for 82-93 S-10 reg. cab short bed for 400sb swap

69Custom · 03-04-2001, 09:30 PM

I have four friends who have done it.

1st - has a 350 pushing over 400hp with a t5, and a 4 cylider rear (they are stronger than the 6 cyl rear) that is what I have been told.

2nd - has a 350/t5 and ford 9" narrowed

3rd - has a 327/4spd and 4cyl rear

4th - has a 350/th350 pushing over 400 hp.

Three of them used s-10 conversion headers and the 4th one use custom made heades that he didnt have to move the steering column. They almost look like manifolds, but are actual headers.

I also have a copy of the manual that my one friend used. I was going to do it, but got tired of the mini's. I love driving a full size truck now. Just my opinion.

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New Project

72 Blazer 4WD 307/3 spd, PS, PB, Posi (Current Project)
83 Chevy SWB Rebuit 350/TH-350 with shift kit, buckets (daily driver)

Primer_72 · 03-04-2001, 11:10 PM

I wonder how hard it would be to swap in a truck 12-bolt. Or maybe just a 10 bolt from a car. Narrowed of course. Im looking to push 500+ hp and 500lb ft so I would want a strong rear.

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72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350

Looking for 82-93 S-10 reg. cab short bed for 400sb swap

69Custom · 03-06-2001, 12:30 PM

If you are going to narrow the rear anyways, I would say go with a ford 9". They are so much strongers that the gm rears. I cant believe I am saying this, listed about in my post you see one of my friends had done this and it was indistructable. It was rebuilt with a detroit locker and Mosser axles and he had 4.11 gears.

------------------
New Project

72 Blazer 4WD 307/3 spd, PS, PB, Posi (Current Project)
83 Chevy SWB Rebuit 350/TH-350 with shift kit, buckets (daily driver)

http://members.xoom.com/luc_nt

DennyB · 03-08-2001, 10:18 PM

Primer, As Heralf posted b4 check out www.jagsthatrun.com
they have tons of info, conversion kits and conversion parts.

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Toms River NJ
--------------------
71 custom 20 - 307 3onthetree-bone stock
56 working Street rod (under construction)
92 Olds 98 land yhat..(wifes)

God bless Ironhead

Primer_72 · 03-10-2001, 01:12 AM

heh, sorry, i missed that....

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72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350

03-03-2001, 10:10 PM	#1
Dezineguy Registered User Join Date: Mar 2001 Location: Exshaw Posts: 2	Doin a S-15 305 Upgrade - Need help Hey Guys & Gals of the truck community... I am in the process of putting a 305 small block chevy motor into a 86 S-15. It is loads of fun I tell ya. My questions is, if anyone has first hand knowledge or knows where to find free info on all the wiring, and hose routing that will need to be done with this upgrade. I have the engine in, custom mounts made, and the driveline attached. It is getting closer. If anybody can help, please email me @ ormstrup@cb.monarch.net it would be VERY appreciated! I have pics of the work done so far if it helps. Isaac ------------------ - Human Being - Repoting for Duty - __________________ - Human Being - Repoting for Duty -

03-03-2001, 10:32 PM	#2
Silverado6.6 Registered User Join Date: Jun 2000 Location: Bartlesville, OK Posts: 53	Go to http://forum.sportruck.com/wwwthread...oard=trucktech and ask your question there, there are a lot of knowledgable folk on that board that know about SBC s10/s15 conversions. good luck ------------------ '81 3/4 ton Silverado Warmed up 355 TH400 w/shift kit Corporate 14 bolt w/ 3.73s __________________ 94 S10 82 K30 81 C20 80 K20 76 C10 69 C20 68 C10 4 sale 51 3600

03-03-2001, 11:16 PM	#3
Stano Registered User Join Date: Jul 2000 Location: Mo Posts: 963	If you live in Missouri forget it. You will get run off from more inspection stations than you can shake a stick at. Thats my first hand experience. 25 in one day. Had a 83 S-15 with a 350 and a saginaw 3 speed manual tranny, was a runnin SOB. Alot of work for nothing for me. ------------------ Current Project(s) 67 Chevy LWB 68 Suburban (Basket case w/o basket) 71 C-20 Built 327,4spd,4.56 Posi Daily Drivers 84 K5 Blazer HiPerf cat., Flowmaster 94 GMC Conversion van (Wifes ride) Kickin back in Rolla,Mo. __________________ New daily driver 96 Chevy K3500 crew cab dually 53,000 miles 350 Vortec 4L80 Nice ride 67 Chevy C-10 LWB Built 350 TH-400 Wifes ride and family rig: 2001 Furd Expedition 5.4 Liter Kickin back in Rolla,Mo. USA "Do the thing you fear most and the death of fear is certain" Mark Twain

03-04-2001, 03:55 PM	#4
herauf Registered User Join Date: Feb 2001 Location: san jose, ca Posts: 209	www.jagsthatrun.com i was thinking about doing mine also... __________________ 1987 k5 4x4...FOR SALE!!! (email for details) will eventually be replaced by a 70-72 4x4 k5

03-04-2001, 04:08 PM	#5
Primer_72 User and Abuser Join Date: Jun 2000 Location: Merry Land Posts: 1,671	I'd like to see the pics! I may be interested in this conversion sometime in the near future... ------------------ 72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350...Lecarra black leather wheel, 69 Chevelle bucket seats, Pioneer system Dunlop G/T Qualifiers on American Racing rims 3/5 drop via drop springs __________________ RIP.... '99 Sierra 2x '93 Sierra 4x '72 C-10 Back in business: 68 C-10 lwb

03-04-2001, 04:16 PM	#6
Dezineguy Registered User Join Date: Mar 2001 Location: Exshaw Posts: 2	I have got a bunch done on the truck. I have recently (last night) got the Rochester Carb on, the starter in (1988 Buick Starter - to fit exhaust past) and Started to splice the wiring harness. I am unsure totally which wies need to be spliced into the 305 / 350 harness. Also where all the plumbing for the crab goes. If anyone knows, drop me a line! I will have pics soon, I don't know how to attach photos to these msgs.. Maybe I can post on a web page. __________________ - Human Being - Repoting for Duty -

03-04-2001, 08:50 PM	#7
Primer_72 User and Abuser Join Date: Jun 2000 Location: Merry Land Posts: 1,671	Does anybody know the website of the company that sells brackets and what not for this conversion? I remember seeing it here once before.... ------------------ 72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350 Looking for 82-93 S-10 reg. cab short bed for 400sb swap __________________ RIP.... '99 Sierra 2x '93 Sierra 4x '72 C-10 Back in business: 68 C-10 lwb

03-04-2001, 09:30 PM	#8
69Custom Registered User Join Date: Mar 2000 Location: Elizabethtown ,PA,USA Posts: 347	I have four friends who have done it. 1st - has a 350 pushing over 400hp with a t5, and a 4 cylider rear (they are stronger than the 6 cyl rear) that is what I have been told. 2nd - has a 350/t5 and ford 9" narrowed 3rd - has a 327/4spd and 4cyl rear 4th - has a 350/th350 pushing over 400 hp. Three of them used s-10 conversion headers and the 4th one use custom made heades that he didnt have to move the steering column. They almost look like manifolds, but are actual headers. I also have a copy of the manual that my one friend used. I was going to do it, but got tired of the mini's. I love driving a full size truck now. Just my opinion. ------------------ New Project 72 Blazer 4WD 307/3 spd, PS, PB, Posi (Current Project) 83 Chevy SWB Rebuit 350/TH-350 with shift kit, buckets (daily driver) __________________ 1972 Chevy C-10 Short Stepside 6Cyl, 3 spd, not opts (Current Project) Now a 2004 SSR 5.3L with 4L60E Now Ididit tilt- ps, pb 2002 Saturn L200 2006 Toyota Highlander HYBRID

03-04-2001, 11:10 PM	#9
Primer_72 User and Abuser Join Date: Jun 2000 Location: Merry Land Posts: 1,671	I wonder how hard it would be to swap in a truck 12-bolt. Or maybe just a 10 bolt from a car. Narrowed of course. Im looking to push 500+ hp and 500lb ft so I would want a strong rear. ------------------ 72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350 Looking for 82-93 S-10 reg. cab short bed for 400sb swap __________________ RIP.... '99 Sierra 2x '93 Sierra 4x '72 C-10 Back in business: 68 C-10 lwb

03-06-2001, 12:30 PM	#10
69Custom Registered User Join Date: Mar 2000 Location: Elizabethtown ,PA,USA Posts: 347	If you are going to narrow the rear anyways, I would say go with a ford 9". They are so much strongers that the gm rears. I cant believe I am saying this, listed about in my post you see one of my friends had done this and it was indistructable. It was rebuilt with a detroit locker and Mosser axles and he had 4.11 gears. ------------------ New Project 72 Blazer 4WD 307/3 spd, PS, PB, Posi (Current Project) 83 Chevy SWB Rebuit 350/TH-350 with shift kit, buckets (daily driver) http://members.xoom.com/luc_nt __________________ 1972 Chevy C-10 Short Stepside 6Cyl, 3 spd, not opts (Current Project) Now a 2004 SSR 5.3L with 4L60E Now Ididit tilt- ps, pb 2002 Saturn L200 2006 Toyota Highlander HYBRID

03-08-2001, 10:18 PM	#11
DennyB Led Sled! Discs R 4 ME! Join Date: Jan 2001 Location: Toms River, NJ, USA (Transplanted Hoosier) Posts: 7,327	Primer, As Heralf posted b4 check out www.jagsthatrun.com they have tons of info, conversion kits and conversion parts. ------------------ Toms River NJ -------------------- 71 custom 20 - 307 3onthetree-bone stock 56 working Street rod (under construction) 92 Olds 98 land yhat..(wifes) God bless Ironhead __________________ "Never ride faster than your Angel can fly" I.M.O.M,W,J&C Patriot Guard Rider

03-10-2001, 01:12 AM	#12
Primer_72 User and Abuser Join Date: Jun 2000 Location: Merry Land Posts: 1,671	heh, sorry, i missed that.... ------------------ 72 chevy in black prima...350sb, performer intake, 1405 carb, Speed Pro cam, headers, HEI, professionally built TH350 __________________ RIP.... '99 Sierra 2x '93 Sierra 4x '72 C-10 Back in business: 68 C-10 lwb



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