Posted By: Randy..
MOST FLOW OUT OF A SET OF -1S - 03/09/12 12:48 AM
what is the most you have seen?
MOST FLOW OUT OF A SET OF -1S
Posted By: joshking440
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 01:29 AM
i think the highest number I have seen was in the 380s
Posted By: Ari440
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 01:34 AM
440-1s cnc345s 380cfm
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 01:53 AM
just wondering, bought a set from a member and flow sheet was 385 at .700, thought that was a killer number for a -1.
Posted By: racerx
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 02:12 AM
Quote:Any ideal on who ported them to get those #'s?
just wondering, bought a set from a member and flow sheet was 385 at .700, thought that was a killer number for a -1.
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 02:17 AM
Slawko Racing
Posted By: racerx
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 02:29 AM
Thaxs 
one other ? what's the differance between the -1's and the 345's?
one other ? what's the differance between the -1's and the 345's?
Posted By: gregsdart
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 04:47 AM
Mine originally flowed 378 at .700 and I think 380 at.800.
I had 2.30 intake valves put in and saw a five to six percent jump in flow, (399 cfm at .800) but ZERO gains.
there was a dip in flow around .400 that may account for part of the lack of gain. The heads flow about the same as before at that point.
I wouldn't worry so much about the ultimate numbers as I would how fast guys are going with them. That is a much better bench mark. My best ET/mph was before the 2.3 valve mods, with a 280/288/110 cam with .765 intake lift. I put a 283/296/112 cam in with .775 lift and got very little if any improvement.
-1 heads are about all done somewhere around 850 to 900 hp, depending on build.
I had 2.30 intake valves put in and saw a five to six percent jump in flow, (399 cfm at .800) but ZERO gains.
there was a dip in flow around .400 that may account for part of the lack of gain. The heads flow about the same as before at that point.
I wouldn't worry so much about the ultimate numbers as I would how fast guys are going with them. That is a much better bench mark. My best ET/mph was before the 2.3 valve mods, with a 280/288/110 cam with .765 intake lift. I put a 283/296/112 cam in with .775 lift and got very little if any improvement.
-1 heads are about all done somewhere around 850 to 900 hp, depending on build.
Posted By: d7cook
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 05:04 AM
Quote:
Mine originally flowed 378 at .700 and I think 380 at.800.
I had 2.30 intake valves put in and saw a five to six percent jump in flow, (399 cfm at .800) but ZERO gains.
there was a dip in flow around .400 that may account for part of the lack of gain. The heads flow about the same as before at that point.
I wouldn't worry so much about the ultimate numbers as I would how fast guys are going with them. That is a much better bench mark. My best ET/mph was before the 2.3 valve mods, with a 280/288/110 cam with .765 intake lift. I put a 283/296/112 cam in with .775 lift and got very little if any improvement.
-1 heads are about all done somewhere around 850 to 900 hp, depending on build.
Rightly or wrongly I look at average flow from .200 to .600 to compare heads. You are right too many people get hung up on peak .700 or .800 numbers when they aren't runnning enough cam or rpms for that number to matter IMHO.
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 11:10 PM
the car they came off of went 8.30s at 160+ at 3300lbs.
Posted By: pittsburghracer
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 11:37 PM
Quote:
the car they came off of went 8.30s at 160+ at 3300lbs.
You should have bought the whole engine. That sounds like a pretty good combo unless it had some added help.
Posted By: MRMOPAR622
Re: MOST FLOW OUT OF A SET OF -1S - 03/09/12 11:41 PM
I would try and copy the engine that the heads come off of as close as possible.Also might be a good idea to find out what converter & gear ratio he was using.
PS It's nice to see more Mopars showing up in AlaBama!!!
PS It's nice to see more Mopars showing up in AlaBama!!!
Posted By: Edge
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 01:27 AM
Quote:
the car they came off of went 8.30s at 160+ at 3300lbs.
Unlikely without nos, boost or being dropped out of a plane, as stated above they are a good head with alot of work to 850 + hp but have practical limitations beyond that
would take upwards of 1150 hp to run those numbers
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 01:53 AM
single fogger. 
and i am putting twin 75mm turbo's on them.
and i am putting twin 75mm turbo's on them.
Posted By: 1967dartgt
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 01:58 AM
Guppys heads...
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 02:06 AM
Posted By: pittsburghracer
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 02:11 AM
I thought so. 
People often forget to mention the power adders. 
People often forget to mention the power adders.
Posted By: Gary Robbins
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 03:28 AM
Quote:
I thought so.
Yeah and people forget to say that their 2300lb chassis car can't run 8.30'S n/a either
let alone drive it down to the local drive in legally if wanted to....I never see anyone running down your daytona chassis car because it's not super fast,so why do you jump at every chance to run down power adder cars 
Sorry for the hyjack to OP...
Posted By: cudabin
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 05:30 PM
N/A my 557ci made 955hp (Methanol injection)w/ 345cc CNC'd -1's that flow 382 at .800 these are Jeff's from Modern's program.
Cam is .875" (less lash and deflection)so i am opening them up as far as reasonable
Car weighs 2,850 and at 4,000 foot DA ran 8.80's, but there is more left in the combo...
If you want more than that N/A you need a better head IMO.
Cheers,
Arnie
Cam is .875" (less lash and deflection)so i am opening them up as far as reasonable
Car weighs 2,850 and at 4,000 foot DA ran 8.80's, but there is more left in the combo...
If you want more than that N/A you need a better head IMO.
Cheers,
Arnie
Posted By: poisondart2
Re: MOST FLOW OUT OF A SET OF -1S - 03/10/12 08:13 PM
Quote:Quote:
I thought so.
Yeah and people forget to say that their 2300lb chassis car can't run 8.30'S n/a either
Power adders are todays racing!! Just the way it is. When the street cars are a full second or two faster than dedicated race cars what option is there? Index class or get with the rest (Non Mopar)people as that is what they are doing. Iam still trying to figure out why the forum on here was done away with. Dont matter what (Mopar Type head) you buy,You wont compete with the rest all out.Weight? doesnt seem to matter as much when you see 3800 Lbs cars running 7.30's same as the pipe racks, now does it? Twin Turbo's Heck yes your 1's will be faster than the rest !
Posted By: Cab_Burge
Re: MOST FLOW OUT OF A SET OF -1S - 03/11/12 03:15 AM
Quote:My 527 brcket motor made 845 HP at N/A at 7000 RPM with a set of CNC ported 440-1 by Jeff that flowed 370 at .600 to .800 with a single 1050 Dominator on a Indy 440-3 intake
single fogger.
Twin turbos with a intercooler and EFI out to make a lot more than that 
Posted By: Randy..
Re: MOST FLOW OUT OF A SET OF -1S - 03/11/12 03:44 AM
it wont be to wild, under .720 lift cam and pump gas, looking for 900/950 to the tire with 3.55 gears.
Posted By: MoparBilly
Re: MOST FLOW OUT OF A SET OF -1S - 03/11/12 05:27 PM
Quote:
N/A my 557ci made 955hp (Methanol injection)w/ 345cc CNC'd -1's that flow 382 at .800 these are Jeff's from Modern's program.
Cam is .875" (less lash and deflection)so i am opening them up as far as reasonable
Car weighs 2,850 and at 4,000 foot DA ran 8.80's, but there is more left in the combo...
If you want more than that N/A you need a better head IMO.
Cheers,
Arnie
Arnie,
Shift point? Trans? Have you ever looked at your combo, and thought, "Darn, I should have went with a better head", or are you happy??
Posted By: cudabin
Re: MOST FLOW OUT OF A SET OF -1S - 03/11/12 05:46 PM
Was shifting at 7,400 rpm as peak HP came at 7,200rpm.
i did not get many passes last year due to transmission problems (727) and broken valve springs.
just put a set of Victory 2.25" Titanium valves and PSI 1224 Dual damperless springs on the -1's and will try a higher shift point this year...
Happy with the -1's as my chassis and my budget can't really handle anymore power...
Bang for the buck, I don't think it is worthwhile to upgrade to a better head for my program.
Cheers,
Arnie
i did not get many passes last year due to transmission problems (727) and broken valve springs.
just put a set of Victory 2.25" Titanium valves and PSI 1224 Dual damperless springs on the -1's and will try a higher shift point this year...
Happy with the -1's as my chassis and my budget can't really handle anymore power...
Bang for the buck, I don't think it is worthwhile to upgrade to a better head for my program.
Cheers,
Arnie