Lat 1 Versus stock 2 barrel and intake

tigresunbeam

tigresunbeam

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The builder of my friend 289 : to replace the 302 he has in his car . suggest that he his better of running the stock 2 barrel ( roller tips , small cam and he will reduce the stock flywheel by 10 pounds) then running the F4b and 600 CFM Carb with same the arrangement ) . He will get more torque , better gas consuption .The F4B best range his 2,500 RPm to 7,000 RPM . He his only cruising !!!!

Any Tought !!!!!!

Gilles
 
Gilles,

Several years ago I called Edelbrock and asked them about the F4B intake manifold. They said the F4B was a good street manifold, idle to 5500 rpm, similar to their Performer manifold. They mentioned that the Performer RPM manifold was best from 1500 to 6500 rpm.

I recommend your friend use the LAT-1 setup with the F4B and 600 cfm carb on his 302. I use a lighter aluminum flywheel, too.

Gary
 
In thinking the stock 2bbl manifold doesn't flow that well, whereas the f4b I'd meant to have decent flow.

As for 2bbl v 4... You could use a smaller 4 bbl, but the 600 edelbrock is a good carb, and if setup well should return decent mpg if you are not getting into the throttle and opening the secondaries.

Another thing to consider for both efficiency power and torque... What ignition system? Vacc or mechanical advance, ekectronic, multi spark?
 
Im thinking the stock 2bbl manifold doesn't flow that well, whereas the f4b Is meant to have decent flow.

As for 2bbl v 4... You could use a smaller 4 bbl, but the 600 edelbrock is a good carb, and if setup well should return decent mpg if you are not getting into the throttle and opening the secondaries.

Another thing to consider for both efficiency power and torque... What ignition system? Vacc or mechanical advance, ekectronic, multi spark?
 
LAT1 versus stock 2 Barrel

Stock distributor , with Ignitor , 40,000 volts , vacum advance .

Its about it !!!


Gilles
 
Rootes offered the 4V kits for a reason.

Shelby added the Cobra intake (similar to the F4B), a Holley 4 barrel and Tri Y headers to the 65 Shelby with an otherwise stock 289 HiPo. It went from 271 hp to 306hp. And the stock 289 HiPo had a cast iron 4 barrel intake with Autolite carb.

Not to mention the F4B & carb looks cooler.
 
Performance tuning the Tiger

Been said and done many times but in the book they have a much larger 2bbl listed .

Sure gas mileage would suck , like I did not learn that when moving from a 30 pict on VW to a 2BBL Zenith on the hot rod bug conv't:cool:

A 4 bbl with smaller primary and pretending there is an egg on the accelerator pedal is the only way to go if you are looking for gas mileage:)
 
True Story (honest Injun)

Back before ole #78 was slid under the barn, we had mounted a for real 950 cfm 3-bbl Holley on an Offy 360 manifold. A radical Crane cam w/solids kept the mice awake. Normal cruising was 22 - 24 mpg verified by several trips up & down the east coast. However, once that 3rd butterfly was tripped by a 3" vacuum bell, the two little gas tanks were in trouble . . . . . .I still have the carb as a wall hanger.
 
Gas mileage???

I always find posts like this humorous because:
1. I really doubt that anyone today is using a Tiger for a daily long range commuter car where the fuel mileage is a serious issue.
2. If you can afford a Tiger, the difference between 15 MPG and 20 MPG probably isn't going to make much of a difference in your cash flow.
3. You have a Tiger because it's fun to drive, not because it's economical. Faster is more fun, 4 barrel is faster.

Same points apply to all the 5 speed installers - do you know how much gas you can buy for what it costs to install a 5 speed? Probably more than you'll buy because of the difference in economy 4sp vs. 5sp for the miles you drive the Tiger, in the rest of your life. I drove my original Tiger (when it WAS my only car and daily driver) cross country at least 5 times, with the original close ratio Toploader trans and 3.54 rear end gears... I don't remember either the engine speed OR fuel economy (cost) being a problem. Just the tiny tanks. But I never had to stop to take a leak when I didn't also need gas.
Bob Knight
B9471705
 
Bob Knight said:
I always find posts like this humorous because:
1. I really doubt that anyone today is using a Tiger for a daily long range commuter car where the fuel mileage is a serious issue.
2. If you can afford a Tiger, the difference between 15 MPG and 20 MPG probably isn't going to make much of a difference in your cash flow.
3. You have a Tiger because it's fun to drive, not because it's economical. Faster is more fun, 4 barrel is faster.

Same points apply to all the 5 speed installers - do you know how much gas you can buy for what it costs to install a 5 speed? Probably more than you'll buy because of the difference in economy 4sp vs. 5sp for the miles you drive the Tiger, in the rest of your life. I drove my original Tiger (when it WAS my only car and daily driver) cross country at least 5 times, with the original close ratio Toploader trans and 3.54 rear end gears... I don't remember either the engine speed OR fuel economy (cost) being a problem. Just the tiny tanks. But I never had to stop to take a leak when I didn't also need gas.
Bob Knight
B9471705
Click to expand...

Well said - I personally think at times we says things to "justify" things that we want to do. I know that I am guilty of this and most likely will continue to justify my actions - regarding to cars that is. Cheers Doug
 
Knight him!

That is confirmation that I am neither alone or stupid. It takes 3500 rpm to do 70 with a close ratio top loader and 3.31 dif. But magic through the gears and no reason not to drive to Colorado Springs and back.

Rick
 
While I don't really care about the mpg in the tiger and faster is fun.... The cruising rpm from a driving comfort point of view does make a difference.

Stock tigers, and especially all the modern 302+ roller engined cats have bags of torque, and running down the freeway at mid range rpm is not great fun .. The cars could easily be sitting at 2000 or below, but instead sit at 3000+.

I'd love to be able to slip into a taller gear and give the engine and my ears and easier ride.... Going up through the gears and hearing the sound build is great... Constant rpm on the highway is a bore :eek:
 
Thats why my build has the wide ratio 4 speed with the new low 1st and the 2.72 rear diff. Overdrive in forth.
 
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"suggest that he his better of running the stock 2 barrel ( roller tips , small cam and he will reduce the stock flywheel by 10 pounds) then running the F4b and 600 CFM Carb with same the arrangement ) . He will get more torque , better gas consuption "

Doesn't make sense to me. I took the stock 260 and removed the original 2bl and manifold. Replaced it with Edelbrock 4bl and RPM Performer manifold and the difference in performance was incredible compared to the original 2bl and manifold. Better gas comsumption with 2bl? Who cares?
 
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