Tune needed after cylinder head install???

delgadog · May 29th, 2009, 04:56 PM

well, i'm going to install my cylinder heads that i've had sitting in my garage for the past month and a half. i'm wondering, would i need to get my car tuned afterwards?? i'm just curious, i haven't heard of getting your car tuned after a cylinder head install, but i'm just making sure. also, if anyone knows any good shops in the tampa area, i'd love to know, i'm new to tampa and i'm stationed at macdill. thanks everyone!

Timm10221 · May 30th, 2009, 06:49 AM

Hey whats up man, how do you like MacDill?? I ma org from FL, would be nice to get stationed their lol. As far as tune, after all your mod it is always good nature to tune your car, once i get my H/C/I done with supporting mods I am going to tune it so it runs good and hey you get some ponies too. I would wait till most if not all your mods are done though.

How long you been in?

Semper FI man

WildWill · May 31st, 2009, 01:19 PM

A tune is always the best way to get the most out of your mods, but spending $500 for one after just swapping heads isn't necessary. Our cars really only NEED a tune after you mess with the cam. If you're just doing heads, don't worry about it.

96gtponyred · May 31st, 2009, 02:44 PM

if your taking your motor apart to swap the heads def do a cam as well

White Thunder · May 31st, 2009, 03:32 PM

+1 and get a tune

1slo5.0 · May 31st, 2009, 03:57 PM

Originally Posted by delgadog

well, i'm going to install my cylinder heads that i've had sitting in my garage for the past month and a half. i'm wondering, would i need to get my car tuned afterwards?? i'm just curious, i haven't heard of getting your car tuned after a cylinder head install, but i'm just making sure. also, if anyone knows any good shops in the tampa area, i'd love to know, i'm new to tampa and i'm stationed at macdill. thanks everyone!

No, not necessary at all. Being that it is a 94-95 car I would suggest spending the money on a tune at some point though. There is some performance to be gained in a tune on those cars.

delgadog · June 2nd, 2009, 12:36 PM

hey thanks guys. yea, i already have a cam, i'm not sure what kind of cam, but if i had to guess, it would be an E cam, it does lope pretty good. and Timm10221, i've been in the corps for 5 years.

delgadog · June 2nd, 2009, 12:39 PM

oh, i almost forgot, the guy doing my cylinder head swap told me the engine was bored over .30! isn't that a 306??? he said i had a 306, i never knew, i find out new things about the car everyday.lol.

1slo5.0 · June 2nd, 2009, 12:39 PM

Originally Posted by delgadog

oh, i almost forgot, the guy doing my cylinder head swap told me the engine was bored over .30! isn't that a 306??? he said i had a 306, i never knew, i find out new things about the car everyday.lol.

Yep, that will make it a 306.

Lind · June 3rd, 2009, 02:09 AM

Originally Posted by 1slo5.0

Yep, that will make it a 306.

i thought all 306 331 347 were bored .30 over but its all in the stroke that makes the size of the engine, lol doesnt really sound right to me but ive read that somewhere on here with all these posts about new engines

1slo5.0 · June 3rd, 2009, 11:59 AM

Originally Posted by Lind

i thought all 306 331 347 were bored .30 over but its all in the stroke that makes the size of the engine, lol doesnt really sound right to me but ive read that somewhere on here with all these posts about new engines

A 302 has a 4.00 bore and a 3.00 stroke. A 306 is a 302 bored .030 (4.030 bore x 3.00 stroke). A 331 has a 4.030 bore and a 3.25 stroke. A 347 has a 4.030 bore and a 3.40 stroke.

Lind · June 3rd, 2009, 12:41 PM

so then how did you assume he had 306 right away if they all have the same bore?

not trying to call you out or anything just intrested

Trick Tuners · June 3rd, 2009, 12:51 PM

Yes, tune for sure if you increase displacement or add a cam.

1slo5.0 · June 3rd, 2009, 01:26 PM

Originally Posted by Lind

so then how did you assume he had 306 right away if they all have the same bore?

not trying to call you out or anything just intrested

Because he said the engine was bored .030 and mentioned nothing about the stroke. If the engine is just bored .030 and retains the stock stroke then it is a 306.

delgadog · June 4th, 2009, 10:57 AM

well, i don't know if has the stock stroke or not. so as far as i know, its a 306. and right now, it seems like its lean, i'm not sure, everytime i give it some gas, it starts to hesitates a bit and feels like its goin to stall or at least heading that way. i have the stock 19# injectors, is that a problem with a 306 and the mods i have??? or should i upgrade to 24# and tune it???

1slo5.0 · June 4th, 2009, 11:12 AM

Originally Posted by delgadog

well, i don't know if has the stock stroke or not. so as far as i know, its a 306. and right now, it seems like its lean, i'm not sure, everytime i give it some gas, it starts to hesitates a bit and feels like its goin to stall or at least heading that way. i have the stock 19# injectors, is that a problem with a 306 and the mods i have??? or should i upgrade to 24# and tune it???

No, your injector size isn't causing the problem. You have problems elsewhere. I would start with the plugs and wires.

delgadog · June 4th, 2009, 11:22 AM

plugs are brand new, wires are around 6 months old or less. i'm going to get it dyno tuned and see if the problem persists. the car didn't have this problem until i put the heads on.

1slo5.0 · June 4th, 2009, 11:38 AM

Originally Posted by delgadog

plugs are brand new, wires are around 6 months old or less. i'm going to get it dyno tuned and see if the problem persists. the car didn't have this problem until i put the heads on.

Did you have the heads checked for cracks, resurfaced and have a valve job done before you put them on?

delgadog · June 4th, 2009, 11:51 AM

yup, i did, and it cost me $1100 for resurfacing, port and polish and new springs, which by the way were to stiff for my hydrolic cam... that could be my prob, but i'm not sure, i put the stock springs back on.

1slo5.0 · June 4th, 2009, 11:53 AM

Originally Posted by delgadog

yup, i did, and it cost me $1100 for resurfacing, port and polish and new springs, which by the way were to stiff for my hydrolic cam... that could be my prob, but i'm not sure, i put the stock springs back on.

You stuck $1100 into GT40 heads?????????

May 29th, 2009, 04:56 PM	#1
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	Tune needed after cylinder head install??? well, i'm going to install my cylinder heads that i've had sitting in my garage for the past month and a half. i'm wondering, would i need to get my car tuned afterwards?? i'm just curious, i haven't heard of getting your car tuned after a cylinder head install, but i'm just making sure. also, if anyone knows any good shops in the tampa area, i'd love to know, i'm new to tampa and i'm stationed at macdill. thanks everyone! __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

May 31st, 2009, 01:19 PM	#3
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	A tune is always the best way to get the most out of your mods, but spending $500 for one after just swapping heads isn't necessary. Our cars really only NEED a tune after you mess with the cam. If you're just doing heads, don't worry about it. __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

May 31st, 2009, 02:44 PM	#4
96gtponyred Regular 94 cobra Join Date: Jul 2007 Location: MA Posts: 491 iTrader: 0 reviews	if your taking your motor apart to swap the heads def do a cam as well __________________ cobra R hood (has a vin#) bassani catback flows welded in jegs O/R H-pipe Jlt CAI Mgw shifter 03 cobra rims 3.73's (on the way!!!)

June 2nd, 2009, 12:36 PM	#7
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	hey thanks guys. yea, i already have a cam, i'm not sure what kind of cam, but if i had to guess, it would be an E cam, it does lope pretty good. and Timm10221, i've been in the corps for 5 years. __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

June 2nd, 2009, 12:39 PM	#8
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	oh, i almost forgot, the guy doing my cylinder head swap told me the engine was bored over .30! isn't that a 306??? he said i had a 306, i never knew, i find out new things about the car everyday.lol. __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

June 3rd, 2009, 12:41 PM	#12
Lind Enthusiast 1994 Ford Mustang GT Join Date: Sep 2006 Location: Shawano, WI Posts: 580 iTrader: 0 reviews	so then how did you assume he had 306 right away if they all have the same bore? not trying to call you out or anything just intrested __________________ www.moddedmustangs.com

June 3rd, 2009, 12:51 PM	#13
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,471 iTrader: 3 reviews	Yes, tune for sure if you increase displacement or add a cam. __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

June 4th, 2009, 10:57 AM	#15
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	well, i don't know if has the stock stroke or not. so as far as i know, its a 306. and right now, it seems like its lean, i'm not sure, everytime i give it some gas, it starts to hesitates a bit and feels like its goin to stall or at least heading that way. i have the stock 19# injectors, is that a problem with a 306 and the mods i have??? or should i upgrade to 24# and tune it??? __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

June 4th, 2009, 11:22 AM	#17
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	plugs are brand new, wires are around 6 months old or less. i'm going to get it dyno tuned and see if the problem persists. the car didn't have this problem until i put the heads on. __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

June 4th, 2009, 11:51 AM	#19
delgadog Regular 1997 Mustang GT None yet... Join Date: Dec 2006 Location: Tampa, Fl Posts: 365 iTrader: 0 reviews	yup, i did, and it cost me $1100 for resurfacing, port and polish and new springs, which by the way were to stiff for my hydrolic cam... that could be my prob, but i'm not sure, i put the stock springs back on. __________________ 95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot.

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