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Post by bigc01fwdv8olds on Sept 29, 2014 8:52:24 GMT -6
Hey guys just wanted to know what all performance wise I could do to my car. I plan on redoing the exhaust and putting w CAI on it but what else is out there that I could do to it?
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plato442
Aurora Driver
Life, Liberty, and the pursuit of Oldsmobile...
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Post by plato442 on Sept 29, 2014 22:32:09 GMT -6
Madtuner used to offer ECM tuning. JET offers a power flow Mass airflow sensor. Cadillac offers a 4.6L! Not much in the sense of bolt on after market! A modified exhaust and air intake is a great start! There are aome great posts on here about salvaging other GM cars and adapting them to our Auroras
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tigger
Administrator 
Posts: 2,844 
Staff Member
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Post by tigger on Sept 29, 2014 23:13:53 GMT -6
...Cadillac offers a 4.6L! Can I get an Amen?! |
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Post by bigc01fwdv8olds on Sept 29, 2014 23:28:36 GMT -6
I know this might sound like a odd idea but has anybody done a gxp 5.3 swap on these cars? My brother owns a gp gxp and we were comparing our cars one day and the aurora is wider and longer than the gp gxp. Just an idea I've been tossing around in my head. I know it would take a lil bit of fabrication on the front end and a whole different computer setup.
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Post by Kersh on Sept 30, 2014 8:34:31 GMT -6
While a potent combination in stock form, there is a massive weak spot of the 5.3/4T65HD assembly...the transmission. a heavier car may exacerbate the issue. Swap wise, I don't think it would be that big of a deal if you're willing to put in the time and have the ability to wire in a new PCM to work with a car it was never really designed for. The 3.5's ran the 4T65 so you might find it easier to start with a 3.5 powered car (or a 3.5 subframe)
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Post by bigc01fwdv8olds on Sept 30, 2014 10:34:06 GMT -6
Ok thanks for the advice now I have another question can the cams out of a 4.6 fit in our 4.0s if will it increase power or loose it?
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Post by Kersh on Sept 30, 2014 11:02:54 GMT -6
The cams are physically the same (will bolt in place of each other).
The 4.6 275hp uses specs very similar to the 4.0.
If you get cams from a STS motor (300hp), the cams are better, but will require computer recalibration to take advantage of the better flow.
Some info I've gathered:
1. 1993 - 1998 Cadillac (LD8 (VIN Y )
• Valve Timing (With Ramp at 0.100 mm Lift)
• Intake Opens 9 degrees BTDC
• Intake Closes 55 degrees ABDC
• Exhaust Opens 51 degrees BBDC
• Exhaust Closes 13 degrees ATDC
• Valve Lift
• Intake 8.6 mm 0.339 in
• Exhaust 8.6 mm 0.339 in
• Duration (@ 0.100 mm Lift)
• Intake 244 degrees
• Exhaust 244 degrees
• Valve Overlap (@ 0.100 mm Lift) 22 degrees
.
1993 - 1999 Cadillac (L37 (VIN 9)
• Valve Timing (With Ramp at 0.100 mm Lift)
• Intake Opens 13 degrees BTDC
• Intake Closes 73 degrees ABDC
• Exhaust Opens 51 degrees BBDC
• Exhaust Closes 13 degrees ATDC
• Valve Lift
• Intake 9.4 mm 0.370 in
• Exhaust 8.6 mm 0.339 in
• Duration (@ 0.100 mm Lift)
• Intake 266 degrees
• Exhaust 244 degrees
• Valve Overlap (@ 0.100 mm Lift) 26 degrees
.
1999 Cadillac (LD8 (VIN Y )
• Valve Timing (With Ramp at 0.100 mm Lift)
• Intake Opens 8 degrees BTDC
• Intake Closes 55 degrees ABDC
• Exhaust Opens 51 degrees BBDC
• Exhaust Closes 13 degrees ATDC
• Valve Lift• Intake 8.6 mm 0.339 in
• Exhaust 8.6 mm 0.339 in
• Duration (@ 0.100 mm Lift)
• Intake 243 degrees
• Exhaust 244 degrees
• Valve Overlap (@ 0.100 mm Lift) 22 degrees
.
2000 - 2003 Cadillac (LD8) 1.68 Rockers
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 236 degrees
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 242 degrees
• Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
• Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
• Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 1.98 degrees
• Camshaft Timing @ 0.150 mm (0.006 in) Lift
• Intake Opens 5.6 degrees BTDC
• Intake Centerline 113.0 degrees ATDC
• Intake Closes 236.8 degrees ATDC
• Exhaust Opens 222.5 degrees BTDC
• Exhaust Centerline 107.0 degrees BTDC
• Exhaust Closes 13.8 degrees ATDC
.
2000 - 2003 Cadillac (L37) 1.68 Rockers
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 246 degrees
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 251 degrees
• Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
• Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
• Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 2.04 degrees
• Camshaft Timing @ 0.150 mm (0.006 in) Lift
• Intake Opens 0.0 degrees ATDC
• Intake Centerline 122.0 degrees ATDC
• Intake Closes 251.0 degrees ATDC
• Exhaust Opens 225.5 degrees BTDC
• Exhaust Centerline 106.0 degrees BTDC
• Exhaust Closes 20.5 degrees ATDC
.
2004 - 2008 Cadillac (LD8) 1.68 Rockers
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 236 degrees
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 242 degrees
• Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
• Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
• Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 1.98 degrees
• Camshaft Timing @ 0.150 mm (0.006 in) Lift
• Intake Opens 1.3 degrees BTDC
• Intake Centerline 117.0 degrees ATDC
• Intake Closes 237.9 degrees ATDC
• Exhaust Opens 226.1 degrees BTDC
• Exhaust Centerline 111.0 degrees BTDC
• Exhaust Closes 5.1 degrees ATDC
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2004 - 2008 Cadillac (L37) 1.68 Rockers
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 246 degrees
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 251 degrees
• Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
• Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
• Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 2.04 degrees
• Camshaft Timing @ 0.150 mm (0.006 in) Lift
• Intake Opens 0.3 degrees ATDC
• Intake Centerline 122.0 degrees ATDC
• Intake Closes 246.0 degrees ATDC
• Exhaust Opens 229.3 degrees BTDC
• Exhaust Centerline 110.0 degrees BTDC
• Exhaust Closes 11.2 degrees ATDC
Olds cam specs
1995 - 1999 Cadillac (L47 (VIN C )
• Valve Timing (With Ramp at 0.100 mm Lift)
• Intake Opens 9 degrees BTDC
• Intake Closes 55 degrees ABDC
• Exhaust Opens 51 degrees BBDC
• Exhaust Closes 13 degrees ATDC
• Valve Lift
• Intake 8.6 mm 0.339 in
• Exhaust 8.6 mm 0.339 in
• Duration (@ 0.100 mm Lift)
• Intake 244 degrees
• Exhaust 244 degrees
• Valve Overlap (@ 0.100 mm Lift) 22 degrees
Shelby Series I
Valve Timing (With Ramp at 0.100 mm Lift)
• Intake Opens 13 degrees BTDC
• Intake Closes 73 degrees ABDC
• Exhaust Opens 51 degrees BBDC
• Exhaust Closes 13 degrees ATDC
• Valve Lift
• Intake 9.4 mm 0.370 in
• Exhaust 8.6 mm 0.339 in
• Duration (@ 0.100 mm Lift)
• Intake 266 degrees
• Exhaust 244 degrees
• Valve Overlap (@ 0.100 mm Lift) 26 degrees
2001 - 2003 (L47) 1.68 Rockers
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 236 degrees
• Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 242 degrees
• Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
• Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
• Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 1.98 degrees
• Camshaft Timing @ 0.150 mm (0.006 in) Lift
• Intake Opens 5.6 degrees BTDC
• Intake Centerline 113.0 degrees ATDC
• Intake Closes 236.8 degrees ATDC
• Exhaust Opens 222.5 degrees BTDC
• Exhaust Centerline 107.0 degrees BTDC
• Exhaust Closes 13.8 degrees ATDC
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Post by Marc on Sept 30, 2014 12:39:59 GMT -6
The 320 HP 4.0 in the Shelby Series 1 used the 300 HP Northstar cams.
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Post by bigc01fwdv8olds on Sept 30, 2014 15:16:38 GMT -6
What year sts motor would I look into for the 300 hp cams pre 2000's or like 2001-05 4.6?
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Post by Kersh on Oct 1, 2014 6:24:17 GMT -6
I believe it would be 2000-2005, but to be sure, you'd need to check the part number from one of the cams to verify what years they were used on.
If you get cams from a 2000-2003 you're safer.
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plato442
Aurora Driver
Life, Liberty, and the pursuit of Oldsmobile...
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Post by plato442 on Oct 1, 2014 9:29:58 GMT -6
the VIN 9 L37 4.6L (STS & DTS) have larger intake cam shafts. CHRF offers larger cams also
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