Quote:
Originally Posted by Sparky73
I wanted to get some advice on an engine and transmission. I have a 1973 Porsche 911 Targa that I am doing a full restoration on. I am not planning to bring the car back to stock. I want to make tasteful upgrades to the car.
Current status, the car is broken down to chassis and is at the snadblaster getting cleaned and rust removed. Once I get it back I will get onto body work.
I am keeping the original steering, suspension and brakes. All is getting broken down, cleaned, new bushing, etc and rebuilt.
Then is comes to the engine. What do I put in this car. I have gone through so many ideas, 70's engine, period correct, Electric, 993 engine and some other crazy idea's that I won't mention.
I am leaning towards a 993 engine, the last of the air cooled. I am not afraid of a total engine rebuild.
Let me know your thoughts or ideas
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unless you are adding SC/Carrera flares and some wide wheels and tires, forget putting a 993 engine in there. Yes, they are a ball but you want the right trans, suspension and brakes to truly enjoy the experience
w/ the early 915s thru '74 you have mechanical speedo and 7:31 R/P, for '75 still mech speedo but now 8:31 R/P, from '76 electric speedo and 8:31.
assuming you have th eoe trans it's a 915/02, 7:31 R/P mechanical speedo and gearted for atop speed of ~148 w/ 185/70 x15 tires
you can bolt a mg block 2.4-2.7 or an aluminum block 3.0 or 3.2
I'd go for a nice 3.0 SC engine w/ cis or aftermarket EFI, it will pair well w/ the trans and chassis and narrowish wheels( assuming 6 or 7 x15 205/55 or /60 tires)
3.2 gives a little more torque which isn't really necessary w/ the gearin and light chassis also adds to the complexity of the install due to additional Motronic electrical complexity, Though these are going to be the most fiddle free when properly installed.