Is it worth it ??
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Is it worth it ??
I have an 05 (A4) with the following mods
1. Vararam CAI
2. FTI 2800 converter
3. Ported stock LS2 Intake
4. Kooks Headers
5. Tune by Cartek
I have run a best of 11.61 @ 118 mph and want a little more ET...however I don't have the $2000 + for a cam... can anyone throw some suggestions...
I'm "OLD"
(70 yr) and have to drive 100 miles each way to Englishtown... I Bracket Race" so I HAVE to be "CONSISTENT" (no Nitrous, or power adder)
I know I could go to GTO spare tire wheels but don't want to be changing tires every time I race..
I was thinking of going to 1.8 RR and have the heads ported ? good or not... any other suggestions ??
Thanks
1. Vararam CAI
2. FTI 2800 converter
3. Ported stock LS2 Intake
4. Kooks Headers
5. Tune by Cartek
I have run a best of 11.61 @ 118 mph and want a little more ET...however I don't have the $2000 + for a cam... can anyone throw some suggestions...
I'm "OLD"
(70 yr) and have to drive 100 miles each way to Englishtown... I Bracket Race" so I HAVE to be "CONSISTENT" (no Nitrous, or power adder)I know I could go to GTO spare tire wheels but don't want to be changing tires every time I race..
I was thinking of going to 1.8 RR and have the heads ported ? good or not... any other suggestions ??
Thanks
Instructor
Joined: May 2010
Posts: 108
Likes: 0
From: St Martinville Louisiana
I think a fast intake is a great mod for the LS2 engine. It should pick up a few more mph and at least 2 to 4 tenths over your ported stock intake. I think Z06 mufflers with a MTW will also help and left in closed positon is as quiet as stock.
Last edited by teetheriot; Mar 8, 2013 at 04:05 PM.
Thread Starter
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Dennis the ported FAST intake will probably cost me $900-$1000 + the cost of porting and installation + putting the car back on the Dyno... I have 3.15 gears now, but yes 3.73 sounds good (I had 3.73's in my 1996 C4) and ran 12.23 and never had the heads off .. just 1.6 RR
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
yes you would pick up 30 lift and 2 duration but i doubt you would see any gain, you can find a used one fast 90 92 ported, i remember running 11.62 with converter in december 40 degrees then gears took me to 11.62 in 90 degree weather, fast 90 took me down to low 11s, your car runs about like mine with the same mods except i weigh more
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
Dennis the ported FAST intake will probably cost me $900-$1000 + the cost of porting and installation + putting the car back on the Dyno... I have 3.15 gears now, but yes 3.73 sounds good (I had 3.73's in my 1996 C4) and ran 12.23 and never had the heads off .. just 1.6 RR
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
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Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Dennis the ported FAST intake will probably cost me $900-$1000 + the cost of porting and installation + putting the car back on the Dyno... I have 3.15 gears now, but yes 3.73 sounds good (I had 3.73's in my 1996 C4) and ran 12.23 and never had the heads off .. just 1.6 RR
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
Dennis the ported FAST intake will probably cost me $900-$1000 + the cost of porting and installation + putting the car back on the Dyno... I have 3.15 gears now, but yes 3.73 sounds good (I had 3.73's in my 1996 C4) and ran 12.23 and never had the heads off .. just 1.6 RR
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
What do you think of 1.8 RR in my C6 and maybe an underdrive pulley.. might pick up .2 and it would be a lot less $$
I'm thinking I would need new valve springs, and push-rods to keep the correct geomertry... I don't have any idea how much gain I'd get from just 1.8 RR and pulley but the did help my C4 when I switched from 1.5 to 1.6 RR .. I was told by going to 1.8 RR on my car now I'd get app .25-.30 more lift....??
Last edited by irok; Mar 9, 2013 at 01:22 AM.
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
Team Owner
Joined: Feb 2001
Posts: 27,252
Likes: 131
From: Short Hills, NJ
Rockers can be a 'hit or miss' type of deal.Yes they're cheaper than a cam of course but that's still A LOT of money for only 7 or 8 (or even 10) horsepower (if that).
And if he was going to get a FAST intake on there (which I do agree yields a VERY nice gain) I wish he'd have skipped having had his factory LS2 manifold ported (which DID help him by the way) first, he could've put that money towards the new FAST. I believe a few of us had even suggested that before he had it done.
Other brands are a little cheaper but don't have nearly the same level of quality. 
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
I agree this will really be a great boost. Also a Fast 90 or 92 (one of the best head guys told me there was no gain in the 92 on the flow bench), so buy the cheapest used one you can find. These 3 items will really knock off some ET.