Need some advice

eckertd · February 28th, 2007, 10:08 AM

Greetings all. Got 2 issues with my '67 Mustang I need some help with. Any advice is appreciated.

1) MAJOR hesitation off-idle, but then pulls real well through 6500rpm. Should I lean out the idle mix screws?

2) Some oil out the breather caps. Should I put a PCV valve on the pass side, plumbed to the vacuum port on the carb, then cap/tee-in the driver side?

Best slip to date is 14.691 @95.22mph. I think there should be more in there though.

Many thanks! Engine details at bottom.

Doug Eckert
Pennington, NJ

1970 302
GT-40 heads; 1.7:1 rockers
Edelbrock Torker 302
Holley 4160
*MAY* be a Lunati #0061 cam
MSD 6-AL
1970 C4; B&M shift kit
1967 9"; 3.50:1; 28-spine Det Locker

B Mad · March 1st, 2007, 11:51 AM

First, what is the cfm is your carb? Do you have vacuum secondaries? When you put the hammer down, try to notice if you have black smoke comming out of the exhaust, If there is you may have too much fuel. Seccond, Your idea with the PCV valve is how I have mine set up, Alittle oil is normal, Third 6500 rpm is high, try to shift allitle sooner 5000, 5500 you may be out of your power band @ 6500 especally if your running points, they may be floating.

mustang1072 · March 2nd, 2007, 01:58 PM

this is off subject but i felt compelled to say nice car B Mad

5-0stank · March 2nd, 2007, 02:10 PM

Originally Posted by eckertd

1) MAJOR hesitation off-idle, but then pulls real well through 6500rpm. Should I lean out the idle mix screws?

this could be your cam.

Stangzilla · March 2nd, 2007, 06:27 PM

Originally Posted by 5-0stank

Originally Posted by eckertd

1) MAJOR hesitation off-idle, but then pulls real well through 6500rpm. Should I lean out the idle mix screws?

this could be your cam.

I doubt that..

B Mad · March 4th, 2007, 03:28 PM

Originally Posted by mustang1072

this is off subject but i felt compelled to say nice car B Mad

Thanks

5-0stank · March 4th, 2007, 05:57 PM

Originally Posted by Stangzilla

Originally Posted by 5-0stank

Originally Posted by eckertd

1) MAJOR hesitation off-idle, but then pulls real well through 6500rpm. Should I lean out the idle mix screws?

this could be your cam.

I doubt that..

i know in some cammed cars, it is not MAJOR hesitation, but they will stumble until they hit the powerband.

Stangzilla · March 4th, 2007, 07:33 PM

Yeah alittle but I doubt thats his problem...

B Mad · March 8th, 2007, 12:41 PM

5-0stank Wrote "i know in some cammed cars, it is not MAJOR hesitation, but they will stumble until they hit the powerband"
Usually in that case the torque converter is kicking in too soon. That is why it is important to match your cam with your torque (or stall) converter... But in eckertd's case, I think it's just tuning.

February 28th, 2007, 10:08 AM	#1
eckertd Newbie Join Date: Feb 2007 Posts: 17 iTrader: 0 reviews	Need some advice Greetings all. Got 2 issues with my '67 Mustang I need some help with. Any advice is appreciated. 1) MAJOR hesitation off-idle, but then pulls real well through 6500rpm. Should I lean out the idle mix screws? 2) Some oil out the breather caps. Should I put a PCV valve on the pass side, plumbed to the vacuum port on the carb, then cap/tee-in the driver side? Best slip to date is 14.691 @95.22mph. I think there should be more in there though. Many thanks! Engine details at bottom. Doug Eckert Pennington, NJ 1970 302 GT-40 heads; 1.7:1 rockers Edelbrock Torker 302 Holley 4160 MAY be a Lunati #0061 cam MSD 6-AL 1970 C4; B&M shift kit 1967 9"; 3.50:1; 28-spine Det Locker

March 1st, 2007, 11:51 AM	#2
B Mad Regular 1967 Coupe 12.3 @ 115 Join Date: Feb 2007 Location: Western New York Posts: 101 iTrader: 0 reviews	First, what is the cfm is your carb? Do you have vacuum secondaries? When you put the hammer down, try to notice if you have black smoke comming out of the exhaust, If there is you may have too much fuel. Seccond, Your idea with the PCV valve is how I have mine set up, Alittle oil is normal, Third 6500 rpm is high, try to shift allitle sooner 5000, 5500 you may be out of your power band @ 6500 especally if your running points, they may be floating. __________________

March 4th, 2007, 07:33 PM	#8
Stangzilla MM Fanatic Join Date: Aug 2006 Location: On my way to Baines's house!! Posts: 3,298 iTrader: 0 reviews	Yeah alittle but I doubt thats his problem... __________________ Rotating The Earth 1320 Feet At A Time!! Today, I found out that when I masturbate at night while watching internet porn I cast a huge shadow on the curtain and the entire street is able to see it.

Threads Similar to: Need some advice
Thread	Thread Starter	Forum	Replies	Last Post
advice	triggerhappy101	5.0 Mustangs	10	June 4th, 2007 08:14 PM
advice	triggerhappy101	94-95	11	June 4th, 2007 05:30 PM
Advice and HP Help	fordboy4rd	5.0 Mustangs	14	March 10th, 2007 01:32 AM
Need some advice...	97stangman	96-98	6	January 19th, 2007 04:23 PM
Advice	crazyjones	V6 Mustangs	7	December 27th, 2006 11:25 AM

Need some advice

Need some advice

Re: Need some advice

Re: Need some advice

Re: Need some advice

March 8th, 2007, 12:41 PM	#9
B Mad Regular 1967 Coupe 12.3 @ 115 Join Date: Feb 2007 Location: Western New York Posts: 101 iTrader: 0 reviews	5-0stank Wrote "i know in some cammed cars, it is not MAJOR hesitation, but they will stumble until they hit the powerband" Usually in that case the torque converter is kicking in too soon. That is why it is important to match your cam with your torque (or stall) converter... But in eckertd's case, I think it's just tuning.

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

All times are GMT -4. The time now is 10:24 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.