262rwhp

mustangramair

Member

Feb 24, 2004

326

0

17

Iowa

Feb 6, 2006

#41

• Feb 6, 2006

• #41

I agree with everyone who said to ditch the spark plugs. Go with Autolite, it's what Trick Flow says to use in the packet you get with the heads. I heard somewhere that some plugs don't reach far enough into the combustion chamber. It's an easy fix, that is what i would start with. Is your valvetrain adjusted correctly? The stud mount rockers can be tricky.

 

tmoss

Gettin Wired

Founding Member

Jun 28, 2001

7,153

32

128

Saint Louis, MO

Feb 6, 2006

#42

• Feb 6, 2006

• #42

Pro Mod said:

I have the exact same cam and I installed it straight-up. My AFR/TFS Stage 1 cam/Cobra intake/bolt-on 5.0 made 292/318 and it was completely untuned. You should be in that ballpark.

View attachment 488370

Click to expand...

You ran pretty lean there! (untuned per your post) - and what was with a flat torque curve between 2,000~2,900 rpm? You go from ~15:1 to ~14:1 in that band but the torque did not respnd to the change in A/F. And, you have a higher velocity intake than the Track Heat the poster has.

 

Bad92GT

The 5 Minute Plan Man

Jun 10, 2004

492

0

0

SC

Feb 6, 2006

#43

• Feb 6, 2006

• #43

advance the timing.. 17 Degrees is where you need to be.. i have ported E7's.. .533/.544 lift cam.. i see 260 horse.. i'd pulled the valve covers off.. check and see if the guy didnt screw you

 

HardmanGT

Founding Member

Oct 5, 2001

500

0

17

Thomaston, CT

Feb 6, 2006

#44

• Feb 6, 2006

• #44

I have to agree with the plugs. Try the Autolites and see how that works for you. I have the Trickflow Street Heat top end kit installed on mine. I pulled 311 rwhp on a Mustang Dyno.

I'm not as concerned with that starting 17 A/F under one condition. If that was still at part throttle cruise when the recording process had started. That's not a big deal at that point. If the dyno operator was on the throttle at that point, be concerned. That needs to be tuned out. Fatten up the A/F.

Change the plugs, make sure base timing and base fuel pressure are set to the standards that your tuner advises. If you don't know what My SCT tune uses 10 degrees and 39 psi at idle.

I run full emissions and cats as well

 

1988WHTGT

Member

Mar 31, 2005

270

0

17

Guyton, GA

Feb 6, 2006

#45

• Feb 6, 2006

• #45

Mine made 274 rwhp, but made 320 rwtq (with the mods in my sig)....I thought mine would do more too....I dunno what it is

 

rsw007

New Member

Jul 7, 2004

469

1

0

Lexington,SC

Feb 6, 2006

#46

• Feb 6, 2006

• #46

well a copper plug will be a little colder and let you run more timing. and every car is different so try a/f adjustments some n/a cars like 12-1 some like 14-1 you have to find what yours like same with timing 14 maybe20 who knows? just keep tring theres more there probably.

 

R

rigamaroles

New Member

Jun 27, 2005

0

0

0

British Columbia

Feb 6, 2006

#47

• Feb 6, 2006

• #47

Sorry to jack the thread, but I put iridium plugs in my car and when I put them in it felt a little boggier (not THAT noticeable, however gas mileage was) but I figured it was just a little mind game. After reading this thread, am I still crazy? Or should I swap them out and put in the plane janes?

 

P

Pro Mod

Member

Nov 16, 2005

236

0

16

Wharton, WV

Feb 7, 2006

#48

• Feb 7, 2006

• #48

tmoss said:

You ran pretty lean there! (untuned per your post) - and what was with a flat torque curve between 2,000~2,900 rpm? You go from ~15:1 to ~14:1 in that band but the torque did not respnd to the change in A/F. And, you have a higher velocity intake than the Track Heat the poster has.

Click to expand...

yeah I would have liked to have had my A/F down to 13:1, but I didn't get the chance to bump my fuel pressure up any. I always thought the torqe curve looked flat from 2000-2900, but I assume it's just the nature of the TFS Stage 1 cam? When driving the car, it never felt like it had a lack of "low-end"...

 

M

micks90lx

New Member

Sep 17, 2005

35

0

0

Alaska

Feb 7, 2006

#49

• Feb 7, 2006

• #49

Yeah and see mine I would have to say its boggy on the bottom end and comes alive around 3800 rpms. Before that it just feels like, theres something there, its just working to hard to get it....kinda like the car is confused if you know what i mean. The power just comes in in stages....pulls hard in this rpm, then backs off, then starts pullin hard again, then backs off...untill it gets to 3800, then my tach is buried before I know it.

 

ninety15.0

New Member

Mar 10, 2004

1,336

0

0

Feb 7, 2006

#50

• Feb 7, 2006

• #50

ditch the plat. plugs, bump up the timing, maybe pull the valve covers and check the valve lash. how many miles on the rebuild when you had the dyno pull done? was it completely broken in....motor might just be tight!

 

M

micks90lx

New Member

Sep 17, 2005

35

0

0

Alaska

Feb 7, 2006

#51

• Feb 7, 2006

• #51

there was 1500 miles on it. I guess I will get some new plugs and run the timing up to about 15. valve lash will be the last resort considering id have to take the intake off.

 

vikingpower

New Member

Dec 6, 2004

656

0

0

CWU Ellensburg, WA

Feb 7, 2006

#52

• Feb 7, 2006

• #52

I use one of the plugs that Trick Flow recommends on the spec sheet, probably the autolites now that I think about it. I also set the timing to 16 or 18 degrees using the stock pointer (I've never degreed the thing for TDC- should've done that when the damn heads were off!), but they definitely like more timing than the iron E7's. Before I put the heads on I took one of them to AutoZone and threaded the plug in the head to make sure it stuck into the chamber the right distance, it was damn perfect so go with what T.F. recommends.

 

vikingpower

New Member

Dec 6, 2004

656

0

0

CWU Ellensburg, WA

Feb 7, 2006

#53

• Feb 7, 2006

• #53

micks90lx said:

there was 1500 miles on it. I guess I will get some new plugs and run the timing up to about 15. valve lash will be the last resort considering id have to take the intake off.

Click to expand...

I set mine at 1/4 turn after zero lash. Try more timing, keep bumping it up until you get a little pinging at WOT and then back it off about 2 degrees (4 if you wanna be on the safe side).

 

8

8950HO

New Member

Mar 31, 2005

658

2

0

Feb 7, 2006

#54

• Feb 7, 2006

• #54

Bosch platinum +4 plugs are crap...a sales gimmic imo.

A friend of my brothers bought them on sale for 1/2 price and threw them in his 92 stock 5.0L stang.
The engine had a slightly rougher idle,pinged more and just didn`t seem to have the same acceleration as before.He pulled them out after 500 miles and threw them in the garbage,and threw in copper core plugs.Problems solved.

Copper core plugs are what you want in a performance engine,as copper is a much better conductor of electricity than platinum.

Platinum plugs are for the average car driver that wants to try and go 100k before changing plugs.They last longer,that`s it.For performance they suck.

 

M

micks90lx

New Member

Sep 17, 2005

35

0

0

Alaska

Feb 7, 2006

#55

• Feb 7, 2006

• #55

yeah viking thats what mine are set at right now is a 1/4 turn after zero lash also. I do remember that when putting the stud girdles on. well I will go get some plugs tomorrow i guess. I was just looking at the spec sheet, has anybody ran the NGK plugs? they were on there and I use to have great luck with them in my bikes....just dont know about the cars

 

8

8950HO

New Member

Mar 31, 2005

658

2

0

Feb 7, 2006

#56

• Feb 7, 2006

• #56

micks90lx said:

yeah viking thats what mine are set at right now is a 1/4 turn after zero lash also. I do remember that when putting the stud girdles on. well I will go get some plugs tomorrow i guess. I was just looking at the spec sheet, has anybody ran the NGK plugs? they were on there and I use to have great luck with them in my bikes....just dont know about the cars

Click to expand...

I have NGK V-Groove copper core UR45`s,(I think that`s the number)in my car.No complaints.

 

Woodrow

Founding Member

May 19, 2002

183

0

0

Atlanta/Auburn

Feb 7, 2006

#57

• Feb 7, 2006

• #57

If you cant figure it out take it to Pro Speed Performance
770 222 5015 in dallas arguably the best tuners in ga

 

prochargedfox

New Member

Nov 2, 2005

16

0

0

Des Moines

Feb 7, 2006

#58

• Feb 7, 2006

• #58

Well considering stock you would make around 175hp to the wheels, you made 87hp more. Thats not too bad. Everyone expects bigger numbers that they come out with. Trust me I know. My car made 225rwhp w/ the install of my procharger. I was very disapointed. I should have made around 350rwhp. You just have to mess around with it more and you can get more out of it.