[72 Opel GT]

I have asked many questions and recieved many responses, and I am deciding to do this.

I have a 72 auto GT, here is what I am deciding to do:

*5-speed Getrag
*3.90 final drive ratio
*lightened flywheel
*electronic ignition
*Weber 38 DGAS
*ported intake manifold
*2.2 litre block
*1.9 head with larger 2.0 litre intake valves
*mild hydraulic camshaft
*1975 'Sprint' exhaust manifold
*2" exhaust pipe with 2" muffler, then a 2.5" over-axle pipe splitting into twin exhaust tips.

I know most of these parts can be found from other vehicles and opel gt source. some of the work will be done myself.

I checked the prices for the auto to standard conversion and it was quite pricy i was wondering if i could get it done any cheaper. Was also wondering the prices of the other parts.

I want to reach around the 15 second mark or a little higher.

 

[RacrX]

Hey that sounds like

A real winning plan, but don't you think with all that you'll be a bit quicker that 15's? Also is the 1975 sprint manifold an opel header? or just a collecter with slightly larger openings? I am considering doing the same type of things to my 74 Sportwagon but I was thinking of a superchager to go with the increase in displacement.....

 

[RallyBob]

A real winning plan, but don't you think with all that you'll be a bit quicker that 15's?

No, he's pretty much right on the money. Probably low-mid 15's. With a better flowing head and a more serious solid lifter cam, plus a close ratio tranny, you could knock 1.5 seconds or so off that, but for a more driveable street car he's got a pretty good matchup there. Traction will be a problem in 1st gear for sure, but a limited slip might only gain you .2 to .3 in 1/4 mile with those engine specs, a little more if the engine was making more power.

Bob

 

[72 Opel GT]

Opel GT Source

Is there a way that I can E-mail someone from their website and ask a few questions about what im ordering and what I will need all together? I'm from Canada and I think it may be easier to just E-mail. I'm aslo not ready to get this stuff right now, but a look into in a few months.