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Topic: Is a GT40 5.0 worth the trouble? (Read 5995 times) previous topic - next topic

Is a GT40 5.0 worth the trouble?

Reply #30
Quote from: Blue Thunder;229978
I most definitely want to be faster than running in the 14's.  It's looking like a TFS stage 1 cam WILL be my best bet to get what I'm looking for. 

Not long ago, I had a '00 Pontiac WS6.  After driving that car, I know I'd be bored driving a 14 second car since the WS6 I had ran in the low 13's stock.  Because of the torque-curve of that darn LS1 engine, it didn't give me much of a seat of the pants thrill.  I always thought it's acceleration was too smooth.  While it was definitely fast, it didn't give me that hard pull that really tells you you're getting somewhere.  Oh sure, I could SEE the acceleration, but I really couldn't FEEL the acceleration.  I always hated that.  The feel of being pushed back into the seat is why people buy cars like that in the first place.  The feeling of being pushed back into the seat is what I'm after.  That's what makes a car fun to me.  Obviously torque is what gives you that sensation.  With my 3.73 gears and a good converter like the one Tom and Demon are talking about, I'm sure I'd be happy with the pull. 

While the set-ups Tom and V8Demon run are most likely a little quicker than my WS6 was, I'm sure they have a much better fun-factor than my WS6, because of how they FEEL under acceleration. 

Anyway...  I'm still in the process of getting the money together for all these goodies.  I'm undoubtedly still a while away from getting my Bird up and running, but I am working on getting the parts together for it.


If you really want to go as fast as your old LS1 car I would bypass the iron GT40s all together and go with a nice set of aluminium heads and a good cam. Check here: sbftech.com for all the info you ever wanted to know about building a small block ford to run 13s or much faster ;)
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Is a GT40 5.0 worth the trouble?

Reply #31
Quote from: thunderjet302;229884
The best I've turned in my 3700 T-bird is a 15.0@94.

HOWEVER the car should be running a 14.4-14.5 et with that trap speed.

Keep in mind in 50* weather, on a set of some what sticky 225/50/60  Michelin street radials, I've pulled a 1.90 60ft(surprised the shiznit out of me too) and run 13.11@105.3, that's at 3760 lbs (including me)... In 75* weather it will run 13.3@104... Those times were running a short belt bypassing the smog pump and P/S... Since, it's run a 8.40 in the 1/8 which was quicker than the half track time(8.42) it turned on the 13.11 run... This was with the P/S in operation and smog pump tossed in the weeds... With DRs my best short is 1.91, so in actuality my best NA 60ft is on street tires...

Is a GT40 5.0 worth the trouble?

Reply #32
You're running aluminum TFS heads aren't you Tom?
William

Is a GT40 5.0 worth the trouble?

Reply #33
Quote from: Blue Thunder;230086
You're running aluminum TFS heads aren't you Tom?


Yup...

Is a GT40 5.0 worth the trouble?

Reply #34
Quote from: TurboCoupe50;230081
Keep in mind in 50* weather, on a set of some what sticky 225/50/60  Michelin street radials, I've pulled a 1.90 60ft(surprised the shiznit out of me too) and run 13.11@105.3, that's at 3760 lbs (including me)... In 75* weather it will run 13.3@104... Those times were running a short belt bypassing the smog pump and P/S... Since, it's run a 8.40 in the 1/8 which was quicker than the half track time(8.42) it turned on the 13.11 run... This was with the P/S in operation and smog pump tossed in the weeds... With DRs my best short is 1.91, so in actuality my best NA 60ft is on street tires...


I'd be happy with mid, to low 13's.  While I'd have to start out with the GT-40P heads that the GT-40 engine I want to get has, I can always buy some TFS heads like you're running later on.

In our cars, what headers do you guys recommend that will bolt up to 40P heads with their funky spark plug arrangement?  I know FMS shorties are supposed to work with 40P heads, but is there a long-tube that will work?  Are the long-tubes what most of you guys are running for their better performance?
William

Is a GT40 5.0 worth the trouble?

Reply #35
on my 1980 fairmont wagon i had.
 i installed a COMPLETE EFI 1995 5.0 -5 speed, four wheel disc brake cobra drive train with some GT40 PARTS for fun. i had 1994/95 mustang standard BBK chrome shorty with the mandrel-bent 2-1/2 H-PIPE and summit dynomax super turbo ler and mandrel-bent 2-1/2 mustang LX tail pipes. IT made 275 hp at the wheel at 5800rpms. talk about the greatest sleeper.a after installing GT40  installed  parts was like  going from the dating  your sister to coming home with the prom QWEEN. yes it is worth every pennie i put to install the GT40 EXTRA. the only thing i regret is having to selling that wagon.
remember it easier to fix them, than to find them after they been crushed.

V6 = juvenile delinquency!

 

Is a GT40 5.0 worth the trouble?

Reply #36
It sounds like that combo worked out well for you Rancheronut.  My whole problem as far as headers arre concerned, is the fact that I'm running an AOD.  There are tons of posts about which long-tube headers will fit P heads on a 5-speed Fox car, but when you're running an AOD like me and want to run LT's, it looks like you're screwed!  I guess I'll have to just stick to FRPP shorties then.
William

Is a GT40 5.0 worth the trouble?

Reply #37
Quote from: Blue Thunder;230261
It sounds like that combo worked out well for you Rancheronut. My whole problem as far as headers arre concerned, is the fact that I'm running an AOD. There are tons of posts about which long-tube headers will fit P heads on a 5-speed Fox car, but when you're running an AOD like me and want to run LT's, it looks like you're screwed! I guess I'll have to just stick to FRPP shorties then.

Are you running a colume shifter? If your not you can run long tubes,It just takes a little work.If you got the P heads you can change the spark plug to a shorty ,and angle boots on the wires!
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Is a GT40 5.0 worth the trouble?

Reply #38
Quote from: kitzdnm;230286
Are you running a colume shifter? If your not you can run long tubes,It just takes a little work.If you got the P heads you can change the spark plug to a shorty ,and angle boots on the wires!


Luckily, my car is floor-shifted.  What type of work are you talking about having to be done?  Steering column finessing?
William