4 cam , but always called DOHC ( dual cam ) ... please explain --- - Page 2 - ZR-1 Net Registry Forums

secondchance · 12-22-2012

Does that mean Bugatti W16 motor would have 8 cams? - 2 cams per head and 4 heads?
Should we call this OCQH - Octa Cam Quad Heads?

alwayscode390 · 12-22-2012

Quote:

Originally Posted by captcorvette

If memory serves when I was in the Cop business it was radio code for Drunk or under the influence but not violent. Perhaps he is making a play on words that he likes the sauce a bit?

BINGO ... I have had this username for the last 14 years LOL ... lots has changed , and I no longer drink. You are only the 3rd person in all those years that has figured it out and said something.

Thanks for the knowledge guys ... I appreciate it ---

DaveK · 12-22-2012

Quote:

Originally Posted by secondchance

Does that mean Bugatti W16 motor would have 8 cams? - 2 cams per head and 4 heads?
Should we call this OCQH - Octa Cam Quad Heads?

It would still be DOHC. Two cams per head. I don't think anything has been made in the auto industry that was more than two cams per head, I think some planes experimented with three.

Dave

KGV · 12-23-2012

Jay leno put a 427 SOHC from the 60s into a Cobra replica.

http://www.jaylenosgarage.com/at-the...tml#item=83460

Ken

Fully Vetted · 12-23-2012

There's also a DOHC 427. Way nasty..

Paul Workman · 12-23-2012

Quote:

Originally Posted by Fully Vetted

There's also a DOHC 427. Way nasty..

Yeah...Bob G's 427 LT5...And yeah, it's WAY NASTY!

Blue Flame Restorations · 12-23-2012

Quote:

Originally Posted by Paul Workman

Yeah...Bob G's 427 LT5...And yeah, it's WAY NASTY!

Ah, ha! My new screen saver!!! Can't wait to do mine. I'll be collecting parts during 2013 for a 013-014 build.

Eye candy!

Paul Workman · 12-23-2012

Quote:

Originally Posted by Blue Flame Restorations

Ah, ha! My new screen saver!!! Can't wait to do mine. I'll be collecting parts during 2013 for a 013-014 build.

Eye candy!

I made the mistake of driving Pete's car, right after I got my 500 package running. I almost wanted to tear it apart again and add some cams...It just never ends!

Bob G said if I drove his car, I'd prolly have to mortgage the house. I'll make a point NOT to do that any time soon!

I envy you tho! (If I had your tallent, I'd burn mine!)

P.

Blue Flame Restorations · 12-23-2012

Quote:

Originally Posted by Paul Workman

I made the mistake of driving Pete's car, right after I got my 500 package running. I almost wanted to tear it apart again and add some cams...It just never ends!

Bob G said if I drove his car, I'd prolly have to mortgage the house. I'll make a point NOT to do that any time soon!

I envy you tho! (If I had your tallent, I'd burn mine!)

P.

You have low expectations. LOL

My car has cams and is a blast to drive. I just want mine to be a litle more exclusive, I guess??? Not really sure why I want to do it. Not a cheap whim.

My motor was just a temporary thing, in my mind. The bottom end has more miles than the car. I want to use my #'s matching block, so I figure "what the hell", might as well collect parts and build a 427. I like the sound of it. Pete's doing the work (his talent).

I just get to pay for it.......

Hog · 12-23-2012

Chevrolet also did a chain driven SOHC 427 BBC test engine back in 1964/65 that ran 12.5:1 compression and it made 660hp at 6800rpm and 532lb/ft torque at 4000rpm.
They also did a pushrod 427 with hemispherical heads that ran an 11.3:1 cr and made 628hp at 6400rpm and 552 lb/ft torque at 4400rpm.
These engine were strictly testbeds to see what output was possible from 427 cubes. From this period the L-88 and ZL-1 engine were born.

L-88 12.5:1CR Chevrolet rated it at 430hp at 5200rpm, and dynoed at 560hp at 6400rpm(the engines power peak).
This was confirmed later with testing, with tube headers, 115 H&H race fuel L-88 no. 21550 made 437hp at 5200rpm and 560hp at 6200rpm. The owner did not want to take the engine to its red line.

For 1968 Chevrolet issued seperate AMA specs(dated October 15, 1967) for the L-88 Corvette. Chev rated it at 430hp at 4600rpm/485 lb/ft at 4000rpm with a 12.5:1 CR.

A 1967 L-88 427 Vette with 11:1 CR instead of 12.5:1 and stronger rods hit 186 mph in the 1970 24hrs at Daytona.

The 427 has and will always have a special place in the hearts of all Chevrolet enthusiasts. GM built the 427 until 1998 in the medium duty trucks with its tall deck block and extra piston ring, then picked it up again in a much more exciting package, the LS7 in the C6 ZO6.

That 701 hp 427 with the custom cams/headers is sweet. Did it ever get into a car?

peace
Hog

12-22-2012	#11
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,730	Re: 4 cam , but always called DOHC ( dual cam ) ... please explain --- Does that mean Bugatti W16 motor would have 8 cams? - 2 cams per head and 4 heads? Should we call this OCQH - Octa Cam Quad Heads? Last edited by secondchance; 12-22-2012 at 05:55 PM.

12-23-2012	#14
KGV Join Date: Mar 2009 Location: Germany Posts: 46	Re: 4 cam , but always called DOHC ( dual cam ) ... please explain --- Jay leno put a 427 SOHC from the 60s into a Cobra replica. http://www.jaylenosgarage.com/at-the...tml#item=83460 Ken

12-23-2012	#15
Fully Vetted Join Date: Sep 2012 Location: Rockwall, Tx Posts: 1,504	Re: 4 cam , but always called DOHC ( dual cam ) ... please explain --- There's also a DOHC 427. Way nasty.. __________________ _________________ 1994 AB/Grey #141 430 RWHP/392 RWTQ FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener BBC - Bling By Carter: Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover

12-23-2012	#20
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,271	Re: 4 cam , but always called DOHC ( dual cam ) ... please explain --- Chevrolet also did a chain driven SOHC 427 BBC test engine back in 1964/65 that ran 12.5:1 compression and it made 660hp at 6800rpm and 532lb/ft torque at 4000rpm. They also did a pushrod 427 with hemispherical heads that ran an 11.3:1 cr and made 628hp at 6400rpm and 552 lb/ft torque at 4400rpm. These engine were strictly testbeds to see what output was possible from 427 cubes. From this period the L-88 and ZL-1 engine were born. L-88 12.5:1CR Chevrolet rated it at 430hp at 5200rpm, and dynoed at 560hp at 6400rpm(the engines power peak). This was confirmed later with testing, with tube headers, 115 H&H race fuel L-88 no. 21550 made 437hp at 5200rpm and 560hp at 6200rpm. The owner did not want to take the engine to its red line. For 1968 Chevrolet issued seperate AMA specs(dated October 15, 1967) for the L-88 Corvette. Chev rated it at 430hp at 4600rpm/485 lb/ft at 4000rpm with a 12.5:1 CR. A 1967 L-88 427 Vette with 11:1 CR instead of 12.5:1 and stronger rods hit 186 mph in the 1970 24hrs at Daytona. The 427 has and will always have a special place in the hearts of all Chevrolet enthusiasts. GM built the 427 until 1998 in the medium duty trucks with its tall deck block and extra piston ring, then picked it up again in a much more exciting package, the LS7 in the C6 ZO6. That 701 hp 427 with the custom cams/headers is sweet. Did it ever get into a car? peace Hog