01-16-2018, 09:55 AM | #85 |
Drives: SS 6 speed of course Join Date: Jan 2016
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there was a 400 cid corporate limit before 1970. Vette and COPO among the exceptions. I guess Caddy also as all their engines
were bigger than 400 cid. There was a real issue when the small block went to 400 cid. Want confusion and I would not know this unless I had one. A 1977 400 cid, 4 bbl, 4 speed Firebird was a chevy 4 bbl 350 small block in parts of California and Hawaii.... the auto birds got a 403 olds (sold as a 400) only the optioned manual WS6 package w72 engine was a Pontiac 400 cid 4 bbls.. a very rare bird. I don't know outside of these areas but yep if you checked 4 speed, 4 bbl and did not pay for the WS6 handling package etc... it was a chevy 350 4bbl. Not that I minded, if you did NOT check the 400 cid box you got the 301 4bb 4 speed, by then the Poncho engines had cast iron rods and were going down to the hated 301 that even with a turbo (came in 1979) could not beat the average 240Z. I'm not stretching to say that a 289 2bbl with a 350 CFM carb of a 390, dual cherry bombs with a 3 speed manualm one legger 2.89 Mustang was more than a match for 301 bird 4 speed.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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01-16-2018, 10:35 AM | #86 | |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
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01-16-2018, 10:38 AM | #87 |
Drives: 21 Bronco Join Date: Jun 2012
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I thought the LT7 was the turbo DOHC for the mid engine vette?
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01-16-2018, 03:04 PM | #88 |
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IMO, the mid engine DOHC V8 vett is a myth. The handwriting is on the wall when Ford went to a V6 twin turbo in the GT40, and long before the Hellcat, Dodge was looking at a twin turbo Pentastar V6... if there is an engine in the a mid-engine vett, which I doubt, it will be a twin turbo V6.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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01-16-2018, 07:36 PM | #89 |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
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01-16-2018, 08:11 PM | #90 |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
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Didn't that post on the corvette forum mention 650 hp and 850 hp, those motors would have to be twin turbo's to make that kind of horse.
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01-16-2018, 08:26 PM | #91 | |
Drives: 2016 F150 Join Date: May 2014
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01-16-2018, 11:57 PM | #92 |
Drives: 2015 SS 1LE Red Hot, 1970 Chevelle Join Date: Apr 2012
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Ford went to a TTV6 in the GT for racing regulations and as a flagship for Ecoboost. That doesn’t mean GM has to follow their path.
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01-17-2018, 04:58 PM | #93 |
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Only if you are made out of money is a twin turbo DOCH mid engine Vette is a good idea. Just IMO of course.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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01-17-2018, 04:59 PM | #94 |
Drives: 2015 SS 1LE Red Hot, 1970 Chevelle Join Date: Apr 2012
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Why would a DOHC mid engine Corvette have to be expensive?
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01-17-2018, 04:59 PM | #95 |
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My thought process falls under cost.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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01-18-2018, 10:56 AM | #96 |
Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
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Find me a "cheap" mid engine anything, find me a cheap twin turbo V8 anything, this is not the first mid engine GM speculation Vette, this is not the first twin turbo mid engine V8 car, this is not the first DOHC Vette, not one parameter above is "cheap". My IMO conclusion is it ain't cheap. Reading the top Z/28 threads the common thought was too expensive and too track focused. Let's pretend we are talking engine only a DOHC 5.4 liter V8, I would speculate because of external size it will fit only in the Camaro (NA only) and new mid engine Vette. That means the total cost of design, tooling, parts, training, support is born out by a very very limited model which are sold at huge profit vs a minimal profit 4 banger Camaro. I personally don't see it and it we do IMO it is going to be jaw dropping expensive.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
Last edited by oldman; 01-18-2018 at 11:12 AM. |
01-18-2018, 01:14 PM | #97 | |
Drives: 2015 SS 1LE Red Hot, 1970 Chevelle Join Date: Apr 2012
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Quote:
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01-18-2018, 04:00 PM | #98 |
Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
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Really, 30 years ago and 20 years ago and 140 HP.. they were cheap cause they were cheap. But I like to play a base MR2 Spider was = $24,500 and the corolla with the same engine base was $12,600. Yep about twice the cost to make it mid engine... real cheap.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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