very frustrated.. what am i doing wrong?????

[wideblock]

most of you have followed the "adventures" i have had trying to get this poly in the 65 d200 crew to run as strong as the one i had in my 66 d100. i finally got the cash to buy the 1404 eddy carb (500cfm) as recommended by so many. its on, i have played with every adjustment possible, and i must say, im a bit dissappointed in the results. there is a noticable difference in responce over the 600(but not much). drivability, and hill climbing, seem to have improoved a bit, but not near what i was expecting. i thought this was the final leg of my battle. now it seems i still have some issues to figure out. right now, i have a 318 poly, refreshed with new rings, bearings, gaskets and a nielson rv cam. i installed a new distributor, and had it proffesionally recurved for my application. petronix is under the cap, accel cap and rotor, 8.8mm wires, autolite plugs, and timing is set at 10btdc. it now has an eddy 500cfm, box stock, sitting on top of a factory cast iron 4bbl intake and a 1" 4 hole spacer plate. i have tryed different valve adjustments, different timing settings, changed the accelator pump stroke and no matter what i do, i can barley get it to spin the tires on my GRAVEL driveway. this thing should have more balls then that. am i missing somthing??? the truck is an automatic 727, im guessing this has a huge deal to do with get up and go versus the 4spd i had in the other truck. but i wouldnt think it would be that much of a drag on the engine. i would assume with the 4.10s out back, it would perform as well as the other truck did with its 2.76 gears, should be better as far as acceleration, but, it isnt. off the line its a huge turd. basically, the truck runs empty, the way the other truck did when my 4door chevy sedan was in tow. whats wrong here??? got any suggestions???

[dodgegrrrrrrl]

if you have no low-end grunt, you are over-cammed or over-carbed or under timed

mechanical or vacuum secondaries?

My barracuda with a 318, tired juice box, 2.93 rear end, '302 heads, factory cast iron intake ('84) factory 340 auto cam and a Carter TQ will burn the tires so hard that they chunk melted rubber balls to the bottoms of the fenders.
318's can work if things are set right. how is your cam timing? one tooth off maybe?

[Seabee]

It's definitely not right - even with the auto it should be very strong.

I hate to say it, but you've covered essentially EVERYTHING else...
as dodgegrrrl said; I'd be suspecting cam timing.
Maybe off a tooth, or possibly to be degreed in correctly this cam needs some extra advance (offset key/sprocket).

[wideblock]

i havent pulled the cover to check for the timing being a tooth off. but i did check tdc, balancer lined up on 0, and verified the rotor pointed the right way. all that lines up like it should. if i go past 10 on tyiming, it clatters real bad under full throttle, actually anything past 1/2 throttle. so i backed it down to 10 and all is great. as far as being over cammed. i doubt it. this thing dont even have a lope to it. it is a nielson rv/towing cam. very smooth idle, just barley above stock specs. what i dont get, it has crap for low end grunt. but other wise runs like a champ. very smooth idle, gives me no problems getting everywhere. it just has no power. i can run the freeway all day at 75mph, run around town all day with no over heating issues or stumbling. hell, if it wernt for the lack of balls, id say it runs perfect. i trust it enough to drive it the 890 miles one way to houston in 2 weeks if that says anything.

but, lets try a different approach to this, maybe its just me expecting too much.
old truck specs:
66 d100 long bed. stock poly w/carter 2bbl (88k miles on it). new dist, mallory points, accel blaster coil, and 8.8mm wires. backed by a np435, and a 8.75 rear with 2.76 gears. 31x10.5x15 tires.

current truck specs:
65 d200 crew cab long bed. fresh poly(under 15k miles), nielson rv cam, factory 4bbl with eddy 500cfm, new dist, recurve kit, petronix ignition, accel blaster coil, and 8.8mm wires. backed by a 727 and a dana 60 spinning 4.10 gears. 33x12.5x16.5 tires.

maybe im comparing apples to oranges. maybe the differences in the trucks is what the problem is and not the engine. im just wondering if i took my old poly, and plopped it in the new truck if it would run the same as the current motor just because of the truck differences. any thoughts???

[Seabee]

The 4:10 gears on the auto truck would more than make up the difference in lost umph compared to the 4spd 2:76 geared truck IMHO.

It should have TONS of low end power.

[Jeffc]

I'm thinking that the loss of around 5% or a little more from the 727 vs the 4sp; plus the weight diffeance would take up some of the gain from the lower gears.

I can tell you that I notice a differance with every
passenger I put in my Belveder, buy the time that I have
added 3 (somewere between 400 to 600 lbs), the prefomance loss it very noted.
A318 727 3:23 15"rims 235r60

Just what is the scale weight of that crew?
my 66D100 tips at 4300 aprox......

[wideblock]

title says 3850 as a wieght. but i know thats wrong. i have never had the crew across the scale alone. but with my trailer, made form the back half of a d200 long bed, she goes 6580 across the scales empty. i would say at the far reach the trailer is 1500 pounds empty. so im guessing the truck is around 5000-5500 pounds. my 66 went across the scales at 4230 empty. but i wouldnt think the extra 1000 pounds would be a big deal with the gear ratio differences. but, i cant pick my take off rpm, i cant pick my shift points, i pretty much just sit back and point the thing. so i guess all this could be factoring in. 15% loss to the tranny, an extra 1000pounds, crappy shift points, and a small stall speed could all be ganging up to kick my @#% on this truck. good news is after my drive to town. i do notice a difference in the power feel on the freeway. at 75mph, it still feels like i got some left. before it didnt. and for some reason, maybe the lack of fuel bog, i have gained 5mph at the same rpm. before the carb swap, 3000rpm was 70mph, 75 if i had a back wind going down hill. now, on a steady cruise im getting 75-78mph at the same 3000rpm. whats up with that???

hey jeff, you got that stroker poly put in anything yet?? im curious how that thing runs.

[JimE]

Trey I would guess your closer to 6K dry. Jim

[Jeffc]

No, nothing on the stroker yet....too many irons...

Have you checked your rear end ratio against
the door tag? my 66 spins around 2800 or 2900rpm at 70mph with 31" tires and 3:55 ratio....

Maybe the 3000 at 70 is about right with 33"
and a 4:10, a lot of dana's came that way.

[wideblock]

according to the calculators at randys ring and pinion with my set up, 70mph is 3000rpm. almost dead on what im running. once i get the 3.54's in there, im looking at 83mph at the same rpm. what a huge improovment that will be. knocks me down to 2550rpm at 70mph, that ought to save a few gallons of that liquid gold.