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-   -   Who can make a 1250hp bigger in cfm. (https://www.racingjunk.com/forums/showthread.php?t=22372)

bjuice 11-29-2008 06:41 PM

i purchased an APD alcohol custom built 1150 cfm last year and couldn't have been more happy with it. i would not hesitate with either company

$1,600 plus your carb sounds really steep speacially if ya got a $1500 piece to begin with...WOW ! but i guess they are getting it.

my 2 cents

dparker 11-29-2008 08:22 PM

I don't think you need more than 1250 cfms. Maybe a better built carb. Check back with us but Ill bet they set you up with a 1150 to 1250 cfm set up.
If RPMs is what you want:
Big heads
Alum. rods
Lots of spring pressure
and a big stick
is what your looking for.
GOOD LUCK :?

hammertime 11-29-2008 08:39 PM


Originally Posted by dparker
I don't think you need more than 1250 cfms. Maybe a better built carb. Check back with us but Ill bet they set you up with a 1150 to 1250 cfm set up.
If RPMs is what you want:
Big heads
Alum. rods
Lots of spring pressure
and a big stick
is what your looking for.
GOOD LUCK :?

Couldnt agree more, 1250 should be plenty big enough if built right.
we've ran a 1150 APD on a 565 Big Duke motor that made 1150hp on the dyno.

obsessedtruck 11-30-2008 12:52 PM


Originally Posted by dparker
I don't think you need more than 1250 cfms. Maybe a better built carb. Check back with us but Ill bet they set you up with a 1150 to 1250 cfm set up.
If RPMs is what you want:
Big heads
Alum. rods
Lots of spring pressure
and a big stick
is what your looking for.
GOOD LUCK :?

Thatsw what I have exactly, Except 7" Oliver rods. Heads flow 520ish, 288*,298* @ .050, .883Int, .833Exh at the valve, The new Brodix Intake design. I upgraded a couple of things along the way also. Dry sump, .904" lifters, Curtis did some more touch up on the heads and intake. So if this thing likes 8500+ thats what it'll turn.

dparker 11-30-2008 01:31 PM

Maybe I can borrow it to make a pass in my 4link dragster. I always have wondered how a motor from your type of racing would do in dragracing. Probably JUST HAUL ASS!!!
I have a top dragster but only have a .775 lift cam with 250lb spring pressure. Working on consistancey and durability.

obsessedtruck 11-30-2008 02:56 PM

Thats where drag and pullin differ. I can car less about consistancy and you guys do. :wink: But we have to make ours pretty stout to take the extreme abuse. Nothing like wfo for 12-20secs and choke it down so it almost kills on ya. This motor of mine is built for the rpm. Gotta love it

camarotale 12-05-2008 06:26 PM

carb
 
just call pat at pro systems, he will tell you what is needed, probably a lot smaller than you think, he built two carbs for me and they were perfect, not even a jet change was needeed. Plus he talks to you like he knows you , and any proplem at the track , call him and he helps right now , I wont ever buy another carb without going thru him, what ever he charges is worth ever dime

altailites 12-06-2008 08:15 PM

Im with you camarotale pat is the man :D :D

obsessedtruck 12-07-2008 03:47 PM

I was able to borrow a BIG carb from a fellow truck puller. It has 2.200 throttle blades. He couldnt remember what cfm it was. But it picked up 6hp on top and areas of 10-20 trough the mid-range. So a big carb did help a good amount. This is at the wheel numbers. 740RRWHP which is on my chasis 1070hp.

tcarda 12-07-2008 04:55 PM


Originally Posted by obsessedtruck

Originally Posted by dparker
I don't think you need more than 1250 cfms. Maybe a better built carb. Check back with us but Ill bet they set you up with a 1150 to 1250 cfm set up.
If RPMs is what you want:
Big heads
Alum. rods
Lots of spring pressure
and a big stick
is what your looking for.
GOOD LUCK :?

Thatsw what I have exactly, Except 7" Oliver rods. Heads flow 520ish, 288*,298* @ .050, .883Int, .833Exh at the valve, The new Brodix Intake design. I upgraded a couple of things along the way also. Dry sump, .904" lifters, Curtis did some more touch up on the heads and intake. So if this thing likes 8500+ thats what it'll turn.


So thats your new cam, huh? Now I know! LOL :D :D


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