Vanning.com logo
Boxdin
Site Navigation


Advertisements
Recent Posts
She's home
by frscke1. February 20th 2019 10:12 pm
WHAT THE HELL IS THIS!!!!!?????!!!!!
by frscke1. February 20th 2019 9:51 pm
Check your tires! Can this be true?
by frscke1. February 20th 2019 9:33 pm
"tracking vehicle maintenance and expenses"
by frscke1. February 20th 2019 9:22 pm
Hi all - about to buy a G20
by Marcela. February 20th 2019 8:29 pm
New San Diego Van Club Starting
by newkirkinc1. February 20th 2019 6:59 pm
1976 Chevy G20 shorty
by newkirkinc1. February 20th 2019 6:56 pm
Dark Star 75 Chevy G10
by newkirkinc1. February 20th 2019 6:51 pm
Opinions on “Euro” style cargo vans at runs
by newkirkinc1. February 20th 2019 6:48 pm
Tell us about your stereo
by jcd74. February 20th 2019 6:06 pm
Featured Links
Vanning.Com is a an authorized Amsoil Dealer


Previous Thread
Next Thread
Print Thread
Rate Thread
Swapping out motor & transmission. #733191
February 17th 2018 9:18 pm
February 17th 2018 9:18 pm
Joined: Feb 2018
Posts: 2
NV
C
contactdewitt Offline OP
stranger
contactdewitt  Offline OP
stranger
C
Joined: Feb 2018
Posts: 2
NV
Hey Folks,
I have an 89 GMC Vandura with the Vortec 350 and TBI. It needs both a new engine and transmission. I figure I will go for a crate motor and a rebuild on the 700R. I would like to put a 454 into it but my budget is limited and I figure a crate 350 will work and be cheaper. If anyone has any advice for me I would be listening. I will be doing the swap out myself as soon as the weather improves.
Thanks Matt

Re: Swapping out motor & transmission. [Re: contactdewitt] #733193
February 17th 2018 9:25 pm
February 17th 2018 9:25 pm
Joined: Jun 2010
Posts: 14,013
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 14,013
Van Diego California
You would love the 454 with a 4l80E .... I do !


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Swapping out motor & transmission. [Re: contactdewitt] #733257
February 19th 2018 5:37 pm
February 19th 2018 5:37 pm
Joined: Nov 2013
Posts: 3,092
Michigan
Dyno_Dave Offline
pooh-bah
Dyno_Dave  Offline
pooh-bah
Joined: Nov 2013
Posts: 3,092
Michigan
I would think the small block to big block conversion would be sort of a PITA. Aside from the mechanical (engine mounts, all accessories and brackets, hoses and connections, transmission, cooler lines, linkages, driveshaft, exhaust), if you want to stay EFI, you'll have some major mods to do in the fuel and electrical departments.

Depends on your goals I guess, but it's hard to believe that a well built small block can't meet your power needs.

A stock TBI 350 (RPO L05) is 200 horsepower. A Vortec 5.7L (RPO L31), or a properly rebuilt 350 with Vortec heads, can easily be in the 250+ horsepower range (the L31 was in stock form). Up to 300 horse is pretty easy. That's a 25 - 50% increase over where you are now. And you could keep your TBI with some mods.

If that's not enough, a nice 383 stroker can get you to 400 horsepower.

It's all about your goals, and how much money you want to spend.


Moderated by  Astro 

Donate


Upcoming Events
discovery
Who's Online Now
1 registered members (1 invisible), 1 guest and 13 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Kyle_Bryant, MCM_James, Mike1, 76GDubb, VanDubs
10754 Registered Users
Top Posters(30 Days)
frscke1 86
CatFish 52
Lister 30
Wedgy 27
Forum Statistics
Forums68
Topics35,333
Posts517,136
Members10,754
Most Online177
May 8th, 2013

Powered by UBB.threads™ PHP Forum Software 7.6.1.1