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View Full Version : 91 gt engine upgrade advice needed



geps91stang
08-28-2010, 12:35 AM
Hi guys i got a 91 gt with the stock 5.0 HO i'm looking to get a set of gt40 heads for it through summit but i'm not sure what cam i should go with on this application i'm also planning to get an engine rebuild kit through summit something that includes new pistons and rings the works any advice would be really helpful since i'm just getting into building thanks. also will the stock rockers work on these heads or will i need upgrade on those also.

biminiLX
08-28-2010, 11:11 AM
First, what are the goals for power and budget?
I personally would never buy GT40 heads new, there are SO many better choices and you can save good weight with aluminum heads.
Does the engine need a rebuild?
-J

geps91stang
08-29-2010, 04:08 AM
yeah it does need a rebuild. for now i just want to get that done and at least get a decent set of heads and cam i'm looking to drop about 2000 into the engine and try to get about 300+ total hp out of it. but i want something that i can still run regular gas (89-93) octane if you have any ideas on rebuild kits i should go with or good heads and cam just let me know thanks.

How Much?
08-29-2010, 11:12 AM
do some shop'n around!!! you can pick up a low mile longblock pretty cheap, throw a Motorsport cam in it, with a 100shot N.O.S. and be hittn 12's all day!!! Even look around and ask some machine shops, i picked up a roller 302 that a guy had rebuilt, but never paid and it sat there for a year......they tried getting ahold of him one last time, then i got it for $700..... :goodidea:

How Much?
08-29-2010, 11:17 AM
yeah it does need a rebuild. for now i just want to get that done and at least get a decent set of heads and cam i'm looking to drop about 2000 into the engine and try to get about 300+ total hp out of it. but i want something that i can still run regular gas (89-93) octane if you have any ideas on rebuild kits i should go with or good heads and cam just let me know thanks.
You can get it done with $2000 .......gt40s from a xplorer, use the intake, get the N.O.S. kit, get rid of smog(but save the parts you take off) Electric fan, Bump the timing ...........YOU CAN DO IT!!!:yes:

89stang
08-29-2010, 11:22 AM
Here you go send him a pm complete motor for a good price and better heads than the gt-40's plus if its in the car still you can hear it run!
http://www.steelcitystangs.com/forums/showthread.php?t=20544