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  268 v 270 cam

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Author Topic:   268 v 270 cam
Calcat
Journeyman

Posts: 75
From: Los Angeles, CA
Registered: Feb 2002

posted 10-06-2002 03:49 AM     Click Here to See the Profile for Calcat   Click Here to Email Calcat     Edit/Delete Message   Reply w/Quote
Changing cams and could use some recommendations. .030 over 302 63cc chevy valves, 68 heads I ported. K code manifolds, stealth intake/600vs. Stock converter and 3.00 gears for now. I'm leaning toward the 268H (sorry Alex) because I think the 270 wants more converter, more cr, and steeper gears. 68 Cougar spends 90% of time on streets/freeway. Any thoughts?

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Fastback68
Gearhead

Posts: 1746
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-06-2002 10:13 AM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
Stored away somewhere in my archives is a good reason for getting a 268 over a 270 for an old 289/302. Sorry I can't remember the reason, but I remember being convinced.

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sigtauenus
Gearhead

Posts: 1824
From: Beaufort, SC
Registered: Jun 2000

posted 10-06-2002 02:32 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
I've ran a 268H in my 302 for the past 7 (80,000 miles) years or so. It has a good idle, smooth with just a nice little hint of roughness to let you know its not stock. I never really utilized its full potential though, kept stock exhaust manifolds on it and a single plane 4-v intake and 4100 carb. I have one of those digital cameras that takes video with audio, so if you want, I could record a couple seconds of it idling and email it to you, but I won't be home until around Thanksgiving. Right now I'm, ahem, trusting my wife to keep the gears lubed every couple weeks.

I am very please with it, but am probably going to go with the 270S for the next rebuild. I figured I'd go with Alex's recipe, with the full up headers, shelby intake/carb, high compression,etc, etc.

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ice'68
Gearhead

Posts: 127
From: Fresno, CA
Registered: Apr 2002

posted 10-06-2002 02:32 PM     Click Here to See the Profile for ice'68   Click Here to Email ice'68     Edit/Delete Message   Reply w/Quote
I'd go with the 268H if it is an old 289/302. With your gearing and use, it'd work out much better.

[This message has been edited by ice'68 (edited 10-06-2002).]

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MidLifCrisis
Gearhead

Posts: 282
From: USA
Registered: Oct 2001

posted 10-06-2002 05:26 PM     Click Here to See the Profile for MidLifCrisis   Click Here to Email MidLifCrisis     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by sigtauenus:
I've ran a 268H in my 302 for the past 7 (80,000 miles) years or so. It has a good idle, smooth with just a nice little hint of roughness to let you know its not stock. I never really utilized its full potential though, kept stock exhaust manifolds on it and a single plane 4-v intake and 4100 carb.
I am very please with it, but am probably going to go with the 270S for the next rebuild. I figured I'd go with Alex's recipe, with the full up headers, shelby intake/carb, high compression,etc, etc.

Sigtauenus:
Did you ever time you car on the track with this combo? What kind of times did it turn if you did?

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sigtauenus
Gearhead

Posts: 1824
From: Beaufort, SC
Registered: Jun 2000

posted 10-06-2002 07:26 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by MidLifCrisis:
Sigtauenus:
Did you ever time you car on the track with this combo? What kind of times did it turn if you did?

Nope, never took it to the track. It has nice acceleration for an engine built at home with spare parts, but probably nothing impressive.

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