It is currently Tue Jul 01, 2025 3:56 pm




Reply to topic  [ 6 posts ] 
 Motor compatability??? 
Author Message
MMT Pro Member
User avatar

Joined: Tue Jan 13, 2009 6:12 pm
Posts: 499
Location: DA BACK OF DA BACK,Louisiana
Post Motor compatability???
wondering if i can put an 88' 5.7 350 in a 1998 chevy 1500 that has the vortec (without changin my electronics) or would i have to change my ignition?? just wondering
the 98' has the vortec motor in it


Sat Aug 01, 2009 10:45 pm
Profile
MMT Addict
User avatar

Joined: Sat Feb 21, 2009 9:39 pm
Posts: 715
Location: Pearland Tx
Post Re: Motor compatability???
The vortec heads are different so I do think the intake will match up on the old motor.

_________________
23 hp gdlt pushin the 14ft NoWeld "aka" the black pearl
35 hp gdsd pushin a 16/60 go devil boat


Sun Aug 02, 2009 12:08 am
Profile
MMT 1000 Club
User avatar

Joined: Sat Jun 27, 2009 11:50 pm
Posts: 3777
Location: Knotts Island, North Carolina.
Post Re: Motor compatability???
The '88 is throttle body injected, the '98 is port injected, completely different intake and electronics. The '88 has a simpler intake, I just replaced the intakes (yes there are 2, an aluminum lower and a plastic upper intake) on my '97 Sierra and it cost me a grand just for the intakes, me and my buddy did the work. The vortecs need 20 more psi of fuel pressure than the old throttle body motor does, so your fuel pump might need changing. I wish it could be done, cause I have 2 suped up 5.7's from dirt cars chillin' in the back yard, and my '97 vortec has 245k miles on it.

_________________
Put yer face in the myrtles.


35 GTR chasing a 1650 Polarkrap.


Sun Aug 02, 2009 8:38 am
Profile
MMT Pro Member
User avatar

Joined: Tue Jan 13, 2009 6:12 pm
Posts: 499
Location: DA BACK OF DA BACK,Louisiana
Post Re: Motor compatability???
dam
owell looks like ima just buy parts to un freeze that motor in the truck


Sun Aug 02, 2009 9:56 am
Profile
MMT F.E.
User avatar

Joined: Tue Jan 13, 2009 7:18 pm
Posts: 971
Post Re: Motor compatability???


Sun Aug 02, 2009 10:15 am
Profile
MMT Elite Member
User avatar

Joined: Wed Jan 14, 2009 7:23 am
Posts: 6233
Location: Tarkington, TX
Post Re: Motor compatability???
Bootz, just look for a used Vortec 5.7 in junk yards. Hell try to find a good longblock and swap your intanke, valve covers, exhaust manifolds, oil pan, and acessories.

_________________
Bayou Surface Drive
337-351-0362
Tarkington, TX 77327


Mon Aug 03, 2009 8:49 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 6 posts ] 

Who is online

Users browsing this forum: No registered users and 110 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: