Opel GT Forum banner

1 - 20 of 46 Posts

·
1000 Post Club
Joined
·
1,409 Posts
Discussion Starter · #1 ·
i can get a 5.7 L engine and tranny for free. just looking for anyones opinion on it.
 

·
Member
Joined
·
1,709 Posts
Yes, buy a pickup truck to put it in ,to haul your opel parts in :D
 

·
Member
Joined
·
1,709 Posts
Yes ,sell it to buy opel parts :D
 

·
Opeler
Joined
·
90 Posts
If you must use another motor use a 3.4 V-6. look up more info on the thread titled "willit". my opinon I'd use a form of the CIH, but thats just me
 

·
No....its not a Buick....
Joined
·
1,546 Posts
keep it simple

hows about an OPEL motor? All the fabrication involved with a completely different motor is enough to kill ya!
 

·
Registered
Joined
·
6,344 Posts
Neat Jeff. :D

Adam, here's the real deal, the largest V engine that will fit in a GT without major rebuilding of the car is a box stock 60 degree engine, either Ford or GM. It has been documented that the max horses the rear-end/torque tube can handle is around 200 plus or minus. Anything more, and you'll have to go to a different manufacturer. In order to go for more horses a whole new frame will have to be fabricated for the body to sit on. There lies another problem, the Opel GT is a unibody, which means no frame, although it looks like there is one there. Everything, engine, tranny, front end, rear end all bolt to the body. Without a substantial ladder type frame, excess horsepower/torque will twist the body excessively. There have been instances where the windshields have cracked or been expelled by overzealous throttle applications with large horsepower output engines. There are folks on the site that have put large engines in the GT, but made the transition to complete rebuild of the frames to do it. Yeah, it can be done, but not cheaply, and for darn sure, not by the average do it yourselfer without proper equipment. JMTCW.
 

·
1000 Post Club
Joined
·
1,409 Posts
Discussion Starter · #15 ·
i have read all the post like 3 times each if not more. i was just wanting other peoples opinion towards the swap. but i have decided to go with the 2.3L turbo. so i have printed out all of jon haas's information that he has on here and i am in contact with him right now about the in's and out's of it.
 

·
OPEL-LESS!!!
Joined
·
2,116 Posts
there is a local selling a fox-bodied mustang with the 2.3 liter turbo, whole car for 800 or best, will post a phone number if anybodys interested.
 

·
Registered
Joined
·
305 Posts
The reason for some of the responses is that we all have read, or seen in person, GT's that have been hacked to death by someone who thought they "knew" what they were doing only to discover that the "monster engine' just won't fit, and end up junking the car. Another good GT bites the dust for no good reason! These cars are often butchered beyond repair and hence useless to try to restore. Use the search engine on this site and you will find all you need to know about engine swaps and the GT. And hopefully save another GT from going to the scrap yard. ALL our Opels are a vanishing species. They are never going to be made again so when the last used one is gone they are history!!! :(
 

·
1000 Post Club
Joined
·
1,409 Posts
Discussion Starter · #18 ·
what rear end does the mustang have, and year etc... also any pics of the car would be awesome, thanks..

adam
 

·
Banned
Joined
·
3,842 Posts
I've been looking at the issues of more power in a GT. The issues range from weight to popped glass with power limitations all over the place. This is why I won't do it myself to a car that looks to be a keeper. Don't forget the weight of the car in general. There is a real issue about rear weight and getting power to the ground.
 

·
crazy opeler
Joined
·
558 Posts
To me the Ideal motor swap is the rotary from the RX-7. I have seen that one done a few times and the results are always awesome.

Pros:

I think a first gen motor puts out around 170hp stock

Smaller than opel motor so you don't have to do the extensive cutting

Weighs less so it helps out the F/R weight ratio.

Cons:

Not rebuildable so you really need to find one that has low miles.

Because it weighs less you have to use lowering springs



I had been leaning towards the V6 swap but looking at some of these projects you guys are doing it looks like more work than I want to deal with. So I am going to search for a good used rotary motor.
 
1 - 20 of 46 Posts
Top