Comp 270's and stock stall converter Q

Rodent · May 11th, 2011, 09:07 PM

Hey all... my brain is hurting from all the info regarding if these comp270's will work for me. I know I should go blower cams but 270's is what I want. I have upgraded springs and notched pistons in my new shortblock the builder is putting in, but a rep @ Jeg's told him I need a new stall converter. The Comp site says 270's designed for 2000+ stall. I have 2002 Automatic with stall specs at 2324 to 2737 as per Ford's manual so I'm wondering if the Jeg's rep just thought it was lower and misinformed my builder. I should be fine right? any thoughts welcome....

PS... I have 4:10's with a Vortech V2 ~ 10psi

mrbigjeep · May 11th, 2011, 09:24 PM

your not gonna hurt anything...your car will just be a turd..

acmillr · May 11th, 2011, 09:28 PM

The 270's aren't really radical cams. You will be fine.

Scott2001GT · May 11th, 2011, 10:14 PM

do a stall over the cams..it will help you a lot more

MikeJones · May 12th, 2011, 01:20 AM

Nice to see you around ACMiller

0949er · May 12th, 2011, 01:40 AM

those cams actually perform very well for S/C applications (I will attest to that)

casper gt · May 12th, 2011, 01:45 AM

although the factory converter can flash stall around 2200, thats not gonna help you.

you'll need an aftermarket converter for the car to run/drive correctly.

slow02gt · May 12th, 2011, 09:32 AM

Ac where the hell you been man lol...what made u come from the dead and start posting again lol...

cstreu1026 · May 12th, 2011, 09:44 AM

My car is NA but Darrin at BC Automotive told me that I would need something in the 4200-4500 range to with my 270's. I would think you will most definitely need a higher stall converter. I would suggest contacting either Darrin ( BCA home ) or Alan ( DirtyDog Performance (Powered by CubeCart) ) to get their reccomendations for your setup.

Rodent · September 18th, 2011, 11:57 PM

The deed is done... 270's sound amazing. So much more lopey than the 268s Along with my blower in my auto, screeches all 4 gears. No noticeable difference using stock stall. Driveablility seems the same. Just FYI

86er · September 19th, 2011, 12:01 AM

Originally Posted by cstreu1026

My car is NA but Darrin at BC Automotive told me that I would need something in the 4200-4500 range to with my 270's. I would think you will most definitely need a higher stall converter. I would suggest contacting either Darrin ( BCA home ) or Alan ( DirtyDog Performance (Powered by CubeCart) ) to get their reccomendations for your setup.

wow, Id tell him thanks but no thanks and take my car somewhere else. What else did he tell you, You need to run 110 octane to run a hand held programmer, oh wait, did he also tell you that you need a 4 link with mini tubs to run nitto drag radials

Dirtyd0g · October 10th, 2011, 02:16 AM

Mod motors love stall. 3800 is a low stall when performance is the goal. I agree 4200-4500 because that gives you maximum multiplication. That does not mean the car will not move until that rpm it means that if you have a transbrake you can take it that high without moving. These transmissions get away with more stall than older transmissions because the lockup can make them 1:1 so gas mileage does not suffer at all. You can launch hard and still cruise at reasonable rpms. 4.10 gears will hurt the gas mileage a converter will not. Many people use the old way of thinking and find the 4200rpm stall crazy. Once you try it you will completely change your mind. Can you get away with less stall, of course the factory unit is truely rated at around 2800 on the 96+ mod motor cars and the 05+ are a touch higher than that. Without a brake you will not reach true stall. Darrin and I spent a year testing all kinds of stall and gear combinations and here is what I come up with on mod motor cars. If you want the best of both worlds do 3.73 gears and 3800 stall. That setup will give you gas mileage about the same as stock. For a more performance oriented application that doesn't mind getting a few mpg less go 4.10's and 4200 stall.
Alan

cstreu1026 · October 10th, 2011, 08:45 AM

Originally Posted by 86er

wow, Id tell him thanks but no thanks and take my car somewhere else. What else did he tell you, You need to run 110 octane to run a hand held programmer, oh wait, did he also tell you that you need a 4 link with mini tubs to run nitto drag radials

Like Alan posted, these aren't old school C4 transmissions behind huge push rod motors. Having a lock up converter makes a huge difference in the way it drives. The 3800 stall I have now might as well be a stock converter. I'd trust a reputible transmission builder (Darrin) or converter builder (alan) any day.

NickPohlAandP · October 10th, 2011, 09:01 AM

I have the COMP 270's and I'm here to tell you that you will hate your car if you don't upgrade your stall. I have a 5spd so it's not an issue for me, but those cams don't even think about coming on until around 2600-2800. Without a stall your car will be a DOG

86er · October 10th, 2011, 07:20 PM

Originally Posted by cstreu1026

Like Alan posted, these aren't old school C4 transmissions behind huge push rod motors. Having a lock up converter makes a huge difference in the way it drives. The 3800 stall I have now might as well be a stock converter. I'd trust a reputible transmission builder (Darrin) or converter builder (alan) any day.

I know this, but 270's are a mild cam and saying YOU HAVE TO HAVE 4200 plus convertor is a little extreme. In a basic street car that sometimes see's some track time a convertor that big is gonna lose efficiency on the big end.

Theres a member on here that had this problem with a person on this boards convertor doing that, switched to a little bit smaller convertor and it fixed a lot of problems there were surfacing

one of the two names listed has some ok stuff at best floating around and is kind of losing his title

cstreu1026 · October 10th, 2011, 07:40 PM

They had a problem with the converter doing what? I can tell you that the 3800 single disk PI in my car might as well be a stocker. The best I could get out of the car after the switch to an auto was 13.30 but that doesn't really matter much since it will be yanked out and replaced with a face plated TKO500.

Dirtyd0g · October 11th, 2011, 09:08 PM

Originally Posted by 86er

I know this, but 270's are a mild cam and saying YOU HAVE TO HAVE 4200 plus convertor is a little extreme. In a basic street car that sometimes see's some track time a convertor that big is gonna lose efficiency on the big end.

Theres a member on here that had this problem with a person on this boards convertor doing that, switched to a little bit smaller convertor and it fixed a lot of problems there were surfacing

one of the two names listed has some ok stuff at best floating around and is kind of losing his title

Running big stall does require some experienced tuner expertise, the benefits far outweigh the negative effects. You have to decide what you want. If you want a smooth cruising ride liek a town car then keep it stock. If you want hard launch you need stall.
Alan

May 11th, 2011, 09:07 PM	#1
Rodent Newbie 02GT Join Date: Nov 2010 Location: Hammond Posts: 20 iTrader: 0 reviews	Comp 270's and stock stall converter Q Hey all... my brain is hurting from all the info regarding if these comp270's will work for me. I know I should go blower cams but 270's is what I want. I have upgraded springs and notched pistons in my new shortblock the builder is putting in, but a rep @ Jeg's told him I need a new stall converter. The Comp site says 270's designed for 2000+ stall. I have 2002 Automatic with stall specs at 2324 to 2737 as per Ford's manual so I'm wondering if the Jeg's rep just thought it was lower and misinformed my builder. I should be fine right? any thoughts welcome.... PS... I have 4:10's with a Vortech V2 ~ 10psi Last edited by Rodent; May 11th, 2011 at 09:08 PM. Reason: more info

May 11th, 2011, 09:24 PM	#2
mrbigjeep I Post Entirely Way Too Much 04 mustang gt 7.21 @ 98 Join Date: Apr 2008 Location: upstate sc Posts: 5,923 iTrader: 1 reviews	your not gonna hurt anything...your car will just be a turd.. __________________ cams + 150 shot

May 11th, 2011, 09:28 PM	#3
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,111 iTrader: 2 reviews	The 270's aren't really radical cams. You will be fine. __________________

May 11th, 2011, 10:14 PM	#4
Scott2001GT BYAHHHH! 2001 Mustang GT 13.874 Join Date: Mar 2008 Location: Missouri Posts: 14,793 Blog Entries: 1 iTrader: 3 reviews	do a stall over the cams..it will help you a lot more __________________ Precision Turbo\|TurboSmart\|TeamZ\|Strange\|Hellion\|BBK\|SCT\|Edge Converters\|Fairbanks\|CG Fabrications\|Treadstone

May 12th, 2011, 01:20 AM	#5
MikeJones Hardcore Enthusiast 2002 Mustang GT 13.7@103 Join Date: Jun 2009 Location: Stoon, Saskatchewan Posts: 2,913 iTrader: 0 reviews	Nice to see you around ACMiller __________________ Mod6 Bigbore Kooks (parting out 2v motor) N/A 5.3 4v Build http://www.moddedmustangs.com/forums...ing-build.html

May 12th, 2011, 01:40 AM	#6
0949er MM Fanatic 2004 Mustang GT 12.85 @ 114 Join Date: Apr 2010 Location: Charlotte Posts: 3,224 iTrader: 0 reviews	those cams actually perform very well for S/C applications (I will attest to that) __________________ MODS: Vortech V1 T-Trim @ 7.5 PSI (tuned down) Comp Cam Stage 2's + more 432 rwhp / 396 rwtq 02/27/2011 NEW VIDEOS! It takes ~$60 a rwhp (over stock) for a 99-04 Mustang GT. Do the Math C2H5OH on the horizon

May 12th, 2011, 01:45 AM	#7
casper gt Moderator 2012 300a gt auto 12.10@116 Join Date: Mar 2008 Location: creighton pa Posts: 7,697 iTrader: 4 reviews	although the factory converter can flash stall around 2200, thats not gonna help you. you'll need an aftermarket converter for the car to run/drive correctly. __________________ MM BRACKET RACING CREW CO-FOUNDER BAMA Performance Drag Team Founder 2012 300a GT auto

May 12th, 2011, 09:32 AM	#8
slow02gt Hardcore Enthusiast 2002 mustang gt 11.38@119 Join Date: Feb 2008 Location: beaumont, texas Posts: 2,835 iTrader: 1 reviews	Ac where the hell you been man lol...what made u come from the dead and start posting again lol... __________________ built motor,trickflow heads,logan intake,80mm comp turbo on the way..

May 12th, 2011, 09:44 AM	#9
cstreu1026 Regular All Motor 1998 GT Join Date: Mar 2011 Location: Xenia, OH Posts: 338 iTrader: 0 reviews	My car is NA but Darrin at BC Automotive told me that I would need something in the 4200-4500 range to with my 270's. I would think you will most definitely need a higher stall converter. I would suggest contacting either Darrin ( BCA home ) or Alan ( DirtyDog Performance (Powered by CubeCart) ) to get their reccomendations for your setup.

September 18th, 2011, 11:57 PM	#10
Rodent Newbie 02GT Join Date: Nov 2010 Location: Hammond Posts: 20 iTrader: 0 reviews	The deed is done... 270's sound amazing. So much more lopey than the 268s Along with my blower in my auto, screeches all 4 gears. No noticeable difference using stock stall. Driveablility seems the same. Just FYI __________________ 2002 GT / Vortech V2 with 3.33 Pulley and AFM Powerpipe / 4:10's w/alum. driveshaft / MMR600 Shortblock / New Comp270 cams / SCT Tuned / Upgraded COP's / Borla Stinger Catback / Mac Prochamber /10.5's in back running GSD3's

October 10th, 2011, 02:16 AM	#12
Dirtyd0g Regular 1997 Thunderbird 14.06 @89.53 needs tuned Join Date: Dec 2007 Location: batavia Posts: 366 iTrader: 0 reviews	Mod motors love stall. 3800 is a low stall when performance is the goal. I agree 4200-4500 because that gives you maximum multiplication. That does not mean the car will not move until that rpm it means that if you have a transbrake you can take it that high without moving. These transmissions get away with more stall than older transmissions because the lockup can make them 1:1 so gas mileage does not suffer at all. You can launch hard and still cruise at reasonable rpms. 4.10 gears will hurt the gas mileage a converter will not. Many people use the old way of thinking and find the 4200rpm stall crazy. Once you try it you will completely change your mind. Can you get away with less stall, of course the factory unit is truely rated at around 2800 on the 96+ mod motor cars and the 05+ are a touch higher than that. Without a brake you will not reach true stall. Darrin and I spent a year testing all kinds of stall and gear combinations and here is what I come up with on mod motor cars. If you want the best of both worlds do 3.73 gears and 3800 stall. That setup will give you gas mileage about the same as stock. For a more performance oriented application that doesn't mind getting a few mpg less go 4.10's and 4200 stall. Alan __________________ I don't check in here anymore, for those that want my opinion and assistance call me. The politics and drama of this forum are too much for me. (513)898-1580

October 10th, 2011, 09:01 AM	#14
NickPohlAandP I like boobs!!! 2000 GT convertible dunno Join Date: May 2011 Location: Brooklet, GA Posts: 2,827 iTrader: 2 reviews	I have the COMP 270's and I'm here to tell you that you will hate your car if you don't upgrade your stall. I have a 5spd so it's not an issue for me, but those cams don't even think about coming on until around 2600-2800. Without a stall your car will be a DOG __________________ Last time you voted to prove you aren't racist. This time prove you're not an IDIOT!!! My Garage--->http://www.moddedmustangs.com/forums...-member-46919/

October 10th, 2011, 07:40 PM	#16
cstreu1026 Regular All Motor 1998 GT Join Date: Mar 2011 Location: Xenia, OH Posts: 338 iTrader: 0 reviews	They had a problem with the converter doing what? I can tell you that the 3800 single disk PI in my car might as well be a stocker. The best I could get out of the car after the switch to an auto was 13.30 but that doesn't really matter much since it will be yanked out and replaced with a face plated TKO500.

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