stepside engine suggestions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lifted k10 · 05-03-2012, 02:24 PM

Hey guys, my 86 2wd stepside 4.3 with a sm465 finally blew the motor after 312,000 miles. Safe to say I think I got my money worth out of the truck. LOL. I have a low mileage rebuilt oldsmobile 455 with a mild cam sitting in my garage, should I put that in her with the sm465 and with the money to buy a crate engine and rebuild the rearend with some gears and a posi or buy a crate motor 350, or ls engine. Let me hear ur thought's or suggestions.

kelsfine69 · 05-03-2012, 08:05 PM

I would do a 350 crate engine and a 700r4 automatic. These trucks came with them so finding parts for the swap at a wrecker would be plentiful..

76stepsidechevy · 05-03-2012, 09:18 PM

What do you use the truck for? A small block and keep the 465 would probably be the most cost effective route.

Shane22696 · 05-03-2012, 09:21 PM

I'm not sure how much fab work it would take to stuff the 455 in there, but I'm sure it would take a decent amount of money and work. I'm gonna have to vote sbc.

ivorton74 · 05-03-2012, 10:34 PM

ls 5.3 swap. good power, good on gas...i want to do this swap so bad.

ivorton74 · 05-03-2012, 10:44 PM

ls 5.3 swap. good power, good on gas...i want to do this swap so bad.

naphtali5725 · 05-18-2012, 01:04 AM

Quote:

Originally Posted by lifted k10

Hey guys, my 86 2wd stepside 4.3 with a sm465 finally blew the motor after 312,000 miles. Safe to say I think I got my money worth out of the truck. LOL. I have a low mileage rebuilt oldsmobile 455 with a mild cam sitting in my garage, should I put that in her with the sm465 and with the money to buy a crate engine and rebuild the rearend with some gears and a posi or buy a crate motor 350, or ls engine. Let me hear ur thought's or suggestions.

Go with the Olds 455, tons of torque, and some 86's came with Oldsmobile diesel engines, so you can get motor mounts etc. cheaply. pretty much a straight forward swap, but you'll also need a BOP(buick, olds, pontiac)Bell housing because the bell housings are different than Chevy I am doing this same swap on my 86 SWB silverado to replace the blown 305. Go check out the Olds FAQ at http://www.442.com/oldsfaq/oldsfaq.htm if you are interested in these great engines.

kind regards,

INSIDIOUS '86 · 05-18-2012, 01:45 AM

Do another 4.3 lol gou another 300k plus miles and try and make the million mile club haha
Posted via Mobile Device

05-03-2012, 02:24 PM	#1
lifted k10 Registered User Join Date: Apr 2009 Location: new britain , ct. Posts: 19	stepside engine suggestions Hey guys, my 86 2wd stepside 4.3 with a sm465 finally blew the motor after 312,000 miles. Safe to say I think I got my money worth out of the truck. LOL. I have a low mileage rebuilt oldsmobile 455 with a mild cam sitting in my garage, should I put that in her with the sm465 and with the money to buy a crate engine and rebuild the rearend with some gears and a posi or buy a crate motor 350, or ls engine. Let me hear ur thought's or suggestions.

05-03-2012, 08:05 PM	#2
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: stepside engine suggestions I would do a 350 crate engine and a 700r4 automatic. These trucks came with them so finding parts for the swap at a wrecker would be plentiful.. __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...

05-03-2012, 09:18 PM	#3
76stepsidechevy Registered User Join Date: Nov 2010 Location: Windsor Locks Posts: 628	Re: stepside engine suggestions What do you use the truck for? A small block and keep the 465 would probably be the most cost effective route.

05-03-2012, 09:21 PM	#4
Shane22696 Registered User Join Date: Jul 2011 Location: Zebulon GA Posts: 128	Re: stepside engine suggestions I'm not sure how much fab work it would take to stuff the 455 in there, but I'm sure it would take a decent amount of money and work. I'm gonna have to vote sbc. __________________ 80 K10 350 4 spd 4 Inch lift, 33 inch BFG M/t

05-03-2012, 10:34 PM	#5
ivorton74 Registered User Join Date: Nov 2011 Location: South Dakota Posts: 916	Re: stepside engine suggestions ls 5.3 swap. good power, good on gas...i want to do this swap so bad.

05-03-2012, 10:44 PM	#6
ivorton74 Registered User Join Date: Nov 2011 Location: South Dakota Posts: 916	Re: stepside engine suggestions ls 5.3 swap. good power, good on gas...i want to do this swap so bad.

05-18-2012, 01:45 AM	#8
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: stepside engine suggestions Do another 4.3 lol gou another 300k plus miles and try and make the million mile club haha Posted via Mobile Device __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

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