408 with a glide. I did something wrong.
04-13-2012, 07:47 PM
#1
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408 with a glide. I did something wrong. Stock Ls1 intake
Stock 78mm truck style throttle body
Stock truck MAF to match
42lb injectors
Aeromotive fuel pump and regulator 58psi.
408ci 9.5 to 1 compression
Dart 225cc Pro 1 heads out of the box.
.625/.625 lift Duration @ .050 254/268 114 LSA Degreed straight up ( no advance or retard)
1 3/4" longtubes
28 degrees of timing
355hp/335torque @ 5700rpm and then DROP!
WHAT THE HELL DID I DO WRONG?
Stock 78mm truck style throttle body
Stock truck MAF to match
42lb injectors
Aeromotive fuel pump and regulator 58psi.
408ci 9.5 to 1 compression
Dart 225cc Pro 1 heads out of the box.
.625/.625 lift Duration @ .050 254/268 114 LSA Degreed straight up ( no advance or retard)
1 3/4" longtubes
28 degrees of timing
355hp/335torque @ 5700rpm and then DROP!
WHAT THE HELL DID I DO WRONG?
Last edited by cash; 04-13-2012 at 07:55 PM.
04-13-2012, 08:01 PM
#2
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whats wrong...here is the list:
stock ls1 intake/throttle body
stock maf
compression is low at 9.5
1 3/4 headers
being a 408 that thing needs to breathe. i would start with the intake/tb/maf and re dyno.
Is this through a 9 inch rear, how heavy are your rear wheels? Mustang dyno? i see power glide and those dont rob as much h.p as t350/400.
Whats your expectations with the combo?
stock ls1 intake/throttle body
stock maf
compression is low at 9.5
1 3/4 headers
being a 408 that thing needs to breathe. i would start with the intake/tb/maf and re dyno.
Is this through a 9 inch rear, how heavy are your rear wheels? Mustang dyno? i see power glide and those dont rob as much h.p as t350/400.
Whats your expectations with the combo?
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04-13-2012, 08:48 PM
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Well.... [QUOTE=Bout'ItZ28;16195450]
8.8 w/spool 4:10's 3800 stall
New Weld wheels with 26in. slick
Dynojet
450 plus would have been fine.
Now I want to max out the combo.
Is this through a 9 inch rear, how heavy are your rear wheels? Mustang dyno? i see power glide and those dont rob as much h.p as t350/400.
Whats your expectations with the combo?
8.8 w/spool 4:10's 3800 stall
New Weld wheels with 26in. slick
Dynojet
450 plus would have been fine.
Now I want to max out the combo.
Is this through a 9 inch rear, how heavy are your rear wheels? Mustang dyno? i see power glide and those dont rob as much h.p as t350/400.
Whats your expectations with the combo?
04-13-2012, 09:26 PM
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Better intake fast??!
Bigger headers 1 7/8s
And the compression is low... Did you have the motor built or buy it.. And was your plan to go NA? Is it me or the lobe separation is to high 114? I'm still learning do if some one can help me.. Drew
Bigger headers 1 7/8s
And the compression is low... Did you have the motor built or buy it.. And was your plan to go NA? Is it me or the lobe separation is to high 114? I'm still learning do if some one can help me.. Drew
04-14-2012, 01:40 AM
#12
Right now, all your parts are wrong for a 408 N/A. For exemple, I have a FAST 92 ported, 85MAF and 92mm LID for a mild H/C 347ci and I'm hesitating about going with a 102mm complete setup(MAF, LID, intake, TB). I pulled the trigger on 1 7/8 headers and new Y pipe design though!
I would slap a turbo setup with truck manifold or procharger. dont waste your money.
04-14-2012, 07:51 AM
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I totally agree!! Youre gonna spend lot of money for intake/MAF/LID exhaust and better cam. Keep all you have and get boost for the same amount$$ but way better gains!!! LS1 intake will be alright for boost while the FAST can crack under boost, not like the LS1/6 intake. Plus you have low comp.
Right now, all your parts are wrong for a 408 N/A. For exemple, I have a FAST 92 ported, 85MAF and 92mm LID for a mild H/C 347ci and I'm hesitating about going with a 102mm complete setup(MAF, LID, intake, TB). I pulled the trigger on 1 7/8 headers and new Y pipe design though!
I would slap a turbo setup with truck manifold or procharger. dont waste your money.
Right now, all your parts are wrong for a 408 N/A. For exemple, I have a FAST 92 ported, 85MAF and 92mm LID for a mild H/C 347ci and I'm hesitating about going with a 102mm complete setup(MAF, LID, intake, TB). I pulled the trigger on 1 7/8 headers and new Y pipe design though!
I would slap a turbo setup with truck manifold or procharger. dont waste your money.
04-15-2012, 12:57 PM
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new cam and boost that setup lol.
If not thats crazy cam for the compr and the intake will not flow in the spots the heads and cam are looking to. This setup all over the place. If this was mine i would re cam it get a turbo setup hot and cold parts and boost away. you have a solid base for boost.
If not thats crazy cam for the compr and the intake will not flow in the spots the heads and cam are looking to. This setup all over the place. If this was mine i would re cam it get a turbo setup hot and cold parts and boost away. you have a solid base for boost.
04-15-2012, 12:59 PM
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with the money you would spend to get a fast and recam and up the compres you would have the same money into a easy turbo setup and make more power. just my .02
04-15-2012, 03:36 PM
#17
Not saying the headers aren't too small, but, I have a set of 1 3/4 stepped to 1 7/8 Edelbrocks what used to be an 11-1cr 418 and it made 469rwhp through a unlocked 80E (521rwhp locked).
Now for the Super Vic (I run one on my 418), I would not run an elbow for a NA set up. I run a 4150 adapter and a Dominator TB. I know that won't fit under an F-body cowl, but a Super Vic with a 4150 might. You will see much better results with out an elbow!
As others have stated, that compression/cam isn't the best combo. That cam should peak way beyond 5,700rpm.
Sure the intake set up could be hurting a bit, but are you sure you are not having valvetrain issues? Even with a LS1 intake I would think it could carry more RPM and make more power.
Now for the Super Vic (I run one on my 418), I would not run an elbow for a NA set up. I run a 4150 adapter and a Dominator TB. I know that won't fit under an F-body cowl, but a Super Vic with a 4150 might. You will see much better results with out an elbow!
As others have stated, that compression/cam isn't the best combo. That cam should peak way beyond 5,700rpm.
Sure the intake set up could be hurting a bit, but are you sure you are not having valvetrain issues? Even with a LS1 intake I would think it could carry more RPM and make more power.
04-15-2012, 04:47 PM
#20
Not saying the headers aren't too small, but, I have a set of 1 3/4 stepped to 1 7/8 Edelbrocks what used to be an 11-1cr 418 and it made 469rwhp through a unlocked 80E (521rwhp locked).
Now for the Super Vic (I run one on my 418), I would not run an elbow for a NA set up. I run a 4150 adapter and a Dominator TB. I know that won't fit under an F-body cowl, but a Super Vic with a 4150 might. You will see much better results with out an elbow!
As others have stated, that compression/cam isn't the best combo. That cam should peak way beyond 5,700rpm.
Sure the intake set up could be hurting a bit, but are you sure you are not having valvetrain issues? Even with a LS1 intake I would think it could carry more RPM and make more power.
Now for the Super Vic (I run one on my 418), I would not run an elbow for a NA set up. I run a 4150 adapter and a Dominator TB. I know that won't fit under an F-body cowl, but a Super Vic with a 4150 might. You will see much better results with out an elbow!
As others have stated, that compression/cam isn't the best combo. That cam should peak way beyond 5,700rpm.
Sure the intake set up could be hurting a bit, but are you sure you are not having valvetrain issues? Even with a LS1 intake I would think it could carry more RPM and make more power.
but I do agree a Victor jr or super victor would be more at home on this. my point is dont rule out running a elbow if your worried about hood clearance and air filtration.