Street gearing

[slone56]

My concern will be cruising anywhere with higher stall and low gears. You will be below 2500 alot of the time so the convertor will be slipping.Heat kills!!

Oh, put some sticky tires and killer stall, say 4500 and you would have a mid 11 second ride.

You mention slipping at highway speeds , but suggest a bigger stall? Plus 4500 stall would be useless with that intake.

I looked at the cam card, that is a wierd RPM range. You and I have the same intake, they run 2500-6500. I think you are under cammed, for that intake. Your cam is starting to build power, before your intake, and our cam runs out, before your intake does. Not an ideal match. Shifting at that low RPM sounds wierd to me. I shift at 7K. Talk about banging the gears, LOL! Run a lock-up stall converter to prevent the highway slippage.

 

[shotgun]

"You mention slipping at highway speeds , but suggest a bigger stall? Plus 4500 stall would be useless with that intake."

That was a semi- joke, he is leaving alot on table by the parameters he chose.

I will play later, gotta go pick up my kids.

 

[slone56]

LOL, I was hoping. I think we all should have 4500 stalls, transbrakes, and redline at about 8500, in our grocery getters

 

[custom442]

I think you are over-cammed for your goals.You need more low end torque to do what you want. If a cam swap is out,maybe advance yours.
Still will not be ideal.

Yes, I thought I went one step too high but one step lower - 276 cam isn't going to make enough difference to actually feel. Maybe 10 ft/lbs on the lower end. One step above the 282 would be too radical for sure.

You could go 2500 stall,th350, 3.23 with 27.5" tire and be at max rpm in second at the end of the 1/8th running 7.8z and 12.20 in the 1/4.
You can gear for the 1/8 or the 1/4 , not both.
The steeper first on th200 (2.74?) will net you a 1/10th in the 1/4.

Those are decent numbers. A 1/10th isn't a concern of mine because it's primarily a street car (if we were talkin half a second...). 1/4 or 1/8th mile times don't bother me, that's not how she plays. The idea is to get the most traction, best launch (not hardest) and hit 60 mph in 1st gear (55 mph is more reasonable). This way I'm able to downshift at any speed driven on the street (30-40 mph) and have tons of useful torque and two (or three) gears left. That's all I care about.

My concern will be cruising anywhere with higher stall and low gears. You will be below 2500 alot of the time so the convertor will be slipping.Heat kills!!

I don't want low gears... If slipping is a problem, can I just lock it out manually when in gear? Or does it work differently?<- not sure about this

I was thinking more like 2500 stall, matching a high stall and a high rear gear is a little confusing.

 

[custom442]

I looked at the cam card, that is a wierd RPM range. You and I have the same intake, they run 2500-6500. I think you are under cammed, for that intake. Your cam is starting to build power, before your intake, and our cam runs out, before your intake does. Not an ideal match. Shifting at that low RPM sounds wierd to me. I shift at 7K. Talk about banging the gears, LOL!

I've speculated I didn't match the cam/intake 100%, but it's close enough. Thing is, the next step up cam would make less power (and less vacuum), although it would match the rpm range of the intake. I guess the dyno will show the results in a few months.... 7,000 is pretty steep, you don't have any trouble with it?

Run a lock-up stall converter to prevent the highway slippage.

x2, that's what I was thinking

 

[slone56]

No trouble with it. Any earlier, and I haven't utilized my full power band. I do have big flow heads and large exhaust on it though, 220cc intakes and 1 5/8" to 3" all the way out the back. Maybe thats what is helping. Glad I live in a state without emmisions testing, cause, I have no cats, or o2 sensors

 

[custom442]

I do have big flow heads ...220cc intakes

I understand now :lol:

 

[dogsht]

You know 3.23s a 2,500 stall and a 27.5 tire would be a good all around compramise and would be cheapest. That said a 3.42/3.73, 2800 stall lock up converter with a 200-4r and say 28" 275/60/15 imo would be better for his combination and goals all the way around. Should still come out of the hole a little harder from more gear & more stall. No converter slip on the highway, plus OD to keep rpms down & mileage up. No downside except cost.