911 "Muscle Car" engine possible?

[911 tweaks]

thanks Bill. Please explain more on your reply.

1. why is a 3.6 that is lightly modded not as robust in a 915 body or trans? (I am confused on this one)
2. please provide more details as to the specifics of your lightly modded list AND/OR in order to do these you must/need to/should do xyz items.
3. any idea of the rwhp here using a 915 trans?

...this sounds like something you may of done in your past...;-)

Thanks Bill!
Bob

(ps this tub will have the 930 OE floating rotor brake system and 930 m/c for haulin' her back to reality that you helped me earlier spec out a yr ago!)

[911teo]

Bob
I was agreeing with you and Boba that a 3.6L with mild tuning is a much cheaper alternative to building a hot rod engine starting from a 3.0 case.

I also think that the HP gap between the 2 will be very narrow.

So I was wondering wether $15k were worth the extra 50hp (if that) that the hot rod engine would give you.

The 3.8 P&C comment was based on the fact that since you are looking at building a motor from the case up I would also consider using a 964 case and putting in 3.8 or 3.9 P&C. Yes the case will be a little more exp than a 3.0 but.... as they say there is no replacement for displacement and all the other components are the same...

In all this remember that for a street motor (i.e. something you can use with 93 octane gas and that will idle) it would be difficult to get close to 390HP.

[911teo]

The 915 transmission is not as strong as a G50.

Take a look at this website, lots of infos on 3.6, 3.6 swaps and 3.8 builds... with costs.

www.instant-g.com

[gulf911]

911tweaks,
The responses are right along the lines I was thinking as well. You can purchase a low miles 3.6? Or already rebuilt? Start with that, chipped, exhaust , you could go with a 915 as long as its a 8:31 R&P, in a 2300ish pound car. I would think 300hp in a 3.6 is way cheaper to attain than starting with a 3.0 or 3.2 and you'll have more torque as well which is what you'll feel off the line.

[Bill Verburg]

Originally posted by 911 tweaks
thanks Bill. Please explain more on your reply.

1. why is a 3.6 that is lightly modded not as robust in a 915 body or trans? (I am confused on this one)
2. please provide more details as to the specifics of your lightly modded list AND/OR in order to do these you must/need to/should do xyz items.
3. any idea of the rwhp here using a 915 trans?

...this sounds like something you may of done in your past...;-)

Thanks Bill!
Bob

(ps this tub will have the 930 OE floating rotor brake system and 930 m/c for haulin' her back to reality that you helped me earlier spec out a yr ago!)

I've had 3 different 3.6 engines in my '76 C3, the 100% stock 964 was fun and more than adequate, the 3.8RS was over the top and too much for the trans and chassis, the lightly modded sortta stock 993 is just about right, this is the most enjoyable of the bunch in a t-bar/915 chassis.

My 993 weighs the same as the C3, and w/ 3.8RS engine and g50/30 cup trans is by far the most satisfying it does stuff on the track that a 911 t-bar chassis wouldn't dream of.

As I posted above, a stock 3.6 is going to be more than most can use, rod bolts are a weak spot if the engine is revved into the 7K range, start there. SS or one of Doughertry DC series sport cams and headers w/ chip tuning is all you need to wake them up. Keep the gearing real w/ short(<=265) tires for street use