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  • 1965 - 1973 Classic Mustangs -General/Talk-

Opinions on motor/transmission combo...

  • Thread starter Thread starter Dylan
  • Start date Start date Mar 22, 2018
D

Dylan

Founding Member
Jan 31, 2002
80
1
6
Colorado
Mar 22, 2018
#1
  • Mar 22, 2018
  • #1
Finally wanting to get my 68 Coupe running again and trying to decide which route to go. It currently has a 289 that's already been bored 40 over and needs lots of attention if I were to decide to keep this motor. Years ago, I put a close ratio toploader behind that 289 which left a lot to be desired in off the line performance, especially when paired with 2.79 or 3.00 rear diff (I forget which it is). One requirement I have is that I want a manual transmission. I'm also leaning towards buying a Blueprint crate motor to go in this car.

The options as I see them are:
1. Keep the close ratio toploader and get a motor with a ton of low end torque that would work well with the 2.38:1 first gear. That motor would probably be a 408w putting out 425 hp and 455 lb ft from Blueprint.
2. Go with a 302 based motor like a 347 from Blueprint putting out 415 hp and lb ft (at higher rpm). I think I would then need a better first gear ratio and could either try to find a wide ratio toploader or get something like a tko.

Any thoughts or opinions? Especially from anyone experienced with a close ratio toploader? This car will be street only and while I don't do tons of interstate driving, it would be nice to be able to.
 

WORTH

20+ Year Stangneter
Nov 18, 2002
2,166
44
98
Cape Cod, Ma.
Mar 23, 2018
#2
  • Mar 23, 2018
  • #2
What is the car suppose to be when it grows up, a 1/4 miler, a Sunday go to car show , a Saturday night cruiser, or a daily driver?

Your first setup would have probably been fine with a 3.50 in the butt end, for a fun streetable cruiser..
 

Edbert

Founding Member
Jul 13, 2002
3,548
32
109
Austin TX
Mar 23, 2018
#3
  • Mar 23, 2018
  • #3
WORTH said:
What is the car suppose to be when it grows up, a 1/4 miler, a Sunday go to car show , a Saturday night cruiser, or a daily driver?
Click to expand...
I think that alone should be "stickied", where's the mod?

Seriously though...what if you are a bit scatterbrained and dyslexic like me and want all of the above but in one vehicle?
 
D

Dylan

Founding Member
Jan 31, 2002
80
1
6
Colorado
Mar 24, 2018
#4
  • Mar 24, 2018
  • #4
Edbert said:
I think that alone should be "stickied", where's the mod?

Seriously though...what if you are a bit scatterbrained and dyslexic like me and want all of the above but in one vehicle?
Click to expand...

Sorry, thought I covered that when I said street only. This will only be used as a fun cruiser, mostly around town, sometimes to work, and I would like to be able to go 75 if needed for an hour without hating it.

Anyone have any experience with a tremec 3550? I've found a few used for sale in my area.
 
P

pile_53574

Member
May 1, 2005
30
4
19
SW WI
Mar 28, 2018
#5
  • Mar 28, 2018
  • #5
My opinion would be to keep what you have and switch rear end gears to ~3.50 or 3.73 and see if you like the performance, then decide on new motor, as they are expensive!! Rear gears are cheaper.
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Mar 30, 2018
#6
  • Mar 30, 2018
  • #6
what ever motor you choose to run, i would say get the T3550 and run a 3.50 - 3.73 rear gear. personally i would run a 302 based engine making probably around 350hp. that would make for a good street combination.
 

WORTH

20+ Year Stangneter
Nov 18, 2002
2,166
44
98
Cape Cod, Ma.
Mar 31, 2018
#7
  • Mar 31, 2018
  • #7
My personal preference on a sport type car is less gears and more low end torque. I like the feel of a big block and a 4 speed on the road. Unfortunately mustangs tend to handle crappy with a BB up front, so my best setup in a stang would be a windsor a 4spd and probably 3.50's in the 9". 300 honest HP is plenty for a stang to have fun with.
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Apr 4, 2018
#8
  • Apr 4, 2018
  • #8
I always thought the 351W was the perfect engine for the 1967 and 1968 Mustangs due to their wider engine bay.
 
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