Cam vs. Mileage
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TECH Junkie
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Joined: Jul 2005
Posts: 3,782
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From: Port Neches, TX
Cam vs. Mileage How much cam will the LS motors take before gas mileage takes a big hit? I've been wanting to do a mild buildup on the '03 LS-1 motor in my '47 Ford (work in progress), but it will only have room for a 15 gal tank...
Russ
Russ
Thread Starter
TECH Junkie
iTrader: (11)
Joined: Jul 2005
Posts: 3,782
Likes: 7
From: Port Neches, TX
The car should weigh around 3000, will have a 200R4 OD auto with lockup, 3.50 gear and 29" tire. My calc's show ~ 1640 @ 60 mph and 1914 @ 70 mph. I plan on running a PI Vigilante with stall based on cam. I want this to sound and run like a low 12 second car, yet with fairly decent mileage. I have NOT ruled out a turbo eventually, my GN powered S-10 runs 11.80's with a 235" six and pulls 18 mpg if I drive with sanity.
Russ
Russ
Highway mileage with the CheaTR cam is unchanged from stock.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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28 mpg stock m6 3.42 10 bolt
22 mpg with my 222/228 .581/581 114 m6 3.73 gears 10 bolt
20 mpg after 5.3 truck heads
15 mpg with my 242/245 .638 .638 112 m6 4.10 gears 12 bolt
all of these are averages I drive equal amounts of highway and city
22 mpg with my 222/228 .581/581 114 m6 3.73 gears 10 bolt
20 mpg after 5.3 truck heads
15 mpg with my 242/245 .638 .638 112 m6 4.10 gears 12 bolt
all of these are averages I drive equal amounts of highway and city
Ive gotten into the single digits before, but my RPM's never fell below 4k either for about 7 mins. On the freeway in my cam car I can see high 20's for the milage. Sometimes ill do my own skip shift around town. I know I could hit 30 if I draft something big like and big SUV or 18 wheeler, just scared of rock chips. I have a 221/221 btw.
