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Forum: Engine Tech   10-15-2015, 03:12 PM
Replies: 46
Views: 2,141
Posted By supervel45
Holley #4779 or #4781. I doubt you will go back...

Holley #4779 or #4781. I doubt you will go back to a #3310 after you try one of them dailed in right.
Forum: Engine Tech   10-15-2015, 02:58 PM
Replies: 46
Views: 2,141
Posted By supervel45
Does your diaphram have a check ball or a pressed...

Does your diaphram have a check ball or a pressed in restriction, and if it is the ball type, I assume the ball is present, and the diphram rubber is in good condition and the cork gasket is present...
Forum: Engine Tech   10-15-2015, 02:26 PM
Replies: 45
Views: 2,484
Posted By supervel45
Never said it would be ideal. This one would be a...

Never said it would be ideal. This one would be a good canidate for decking the block to zero which would put him at 9.7/1. So I take it you do not believe the numbers in the build I linked? Better...
Forum: Engine Tech   10-15-2015, 11:31 AM
Replies: 45
Views: 2,484
Posted By supervel45
Relax.:cool: Like I said if you want sound and...

Relax.:cool: Like I said if you want sound and top end performance the Isky 280 would work for a shelf grind. Is it the best cam out there and can a custom cam out perform it, no and yes. Will a well...
Forum: Engine Tech   10-15-2015, 11:08 AM
Replies: 29
Views: 1,460
Posted By supervel45
Very good idea, an old school trick that works....

Very good idea, an old school trick that works. For $50 dollars it would be hard to go wrong.
Forum: Engine Tech   10-15-2015, 10:53 AM
Replies: 46
Views: 2,141
Posted By supervel45
http://www.jegs.com/InstallationInstructions/500/5...

http://www.jegs.com/InstallationInstructions/500/510/510-20-13.pdf Not from my experience and not what Holley says on the secondaries. I will concur somewhat on the vent tube if it is...
Forum: Engine Tech   10-14-2015, 11:15 PM
Replies: 46
Views: 2,141
Posted By supervel45
You might try a Black spring in the secondaries...

You might try a Black spring in the secondaries which is the heaviest spring and see how it does. Your power valve is a little high but it will likely just cause bad fuel economy and not a lean...
Forum: Engine Tech   10-14-2015, 08:13 PM
Replies: 46
Views: 2,141
Posted By supervel45
I am still trying to figure out how blocking the...

I am still trying to figure out how blocking the choke tower with an air filter lid would cause it to run lean.:cool:
Forum: Engine Tech   10-14-2015, 04:13 PM
Replies: 29
Views: 1,460
Posted By supervel45
How good a deal $ ? I would look very closely at...

How good a deal $ ? I would look very closely at the exhaust valves for signs of sunkin seats/valves and the color of the valves for evenness. If they don't look good and the price is over $100.00 I...
Forum: Engine Tech   10-14-2015, 04:04 PM
Replies: 29
Views: 1,460
Posted By supervel45
I was trying to quote the OP Dave, sorry about...

I was trying to quote the OP Dave, sorry about that. I did not say it was 100% way to tell, but it would be more likely that they were. Did you have any problems running unleaded gas with them or did...
Forum: Engine Tech   10-14-2015, 02:37 PM
Replies: 29
Views: 1,460
Posted By supervel45
You can look at the back of the exhaust bump...

You can look at the back of the exhaust bump through the exhaust port and see if the hole is drilled. If it is I would suspect they are more likely to have hardened seats? Ford also likely produced a...
Forum: Engine Tech   10-13-2015, 12:44 PM
Replies: 45
Views: 2,484
Posted By supervel45
http://www.fordmuscleforums.com/dyno-board/465194-...

http://www.fordmuscleforums.com/dyno-board/465194-dyno-tested-very-mild-460-ford-last-week-dyno-sheet.html Here is an old Dyno Sheet on a...
Forum: Engine Tech   10-13-2015, 12:37 PM
Replies: 45
Views: 2,484
Posted By supervel45
A lot of guys back in the late 70's and 80's...

A lot of guys back in the late 70's and 80's would throw on a set of DOVES and a 280 cam in their low compression 460's with a 68-71 timing chain headers SCJ intake 850DP and call it a day. If you...
Forum: Engine Tech   10-13-2015, 12:12 PM
Replies: 46
Views: 2,141
Posted By supervel45
I think I would put a restricter jet in that...

I think I would put a restricter jet in that large of a return fuel line also.
Forum: Engine Tech   10-13-2015, 12:09 PM
Replies: 46
Views: 2,141
Posted By supervel45
I would not get too wrapped up in a generic...

I would not get too wrapped up in a generic Holley chart, and I would avoid comparing jets between different list number carbs. That 830 DP is a Competition model aimed a race engines with very...
Forum: Engine Tech   10-13-2015, 11:54 AM
Replies: 46
Views: 2,141
Posted By supervel45
The more restrictive the air filter the more rich...

The more restrictive the air filter the more rich they tend to run. It also reduces the CFM through the carb. making it act like smaller one if the A/F where the same.
Forum: Engine Tech   10-13-2015, 01:20 AM
Replies: 46
Views: 2,141
Posted By supervel45
It would be nice if you had another known good...

It would be nice if you had another known good carb to throw on there to try but, if you don't keep working with what you have. You should have plenty of jet for your setup and that carb if it has...
Forum: Engine Tech   10-13-2015, 12:10 AM
Replies: 46
Views: 2,141
Posted By supervel45
My 42 My 429 was very similar with more cam...

My 42
My 429 was very similar with more cam and less compression. When I ran a 780 Holley 3310-1 with 73 78's it ran fine and I believe the rear power valve was even blocked. You may want to check...
Forum: Engine Tech   10-12-2015, 11:48 PM
Replies: 45
Views: 2,484
Posted By supervel45
http://wallaceracing.com/cr_test2.php ...

http://wallaceracing.com/cr_test2.php I come up with 9.15 with 22cc dish .030" in the hole and 75cc chamber. There are pro's and con's to using...
Forum: Engine Tech   10-12-2015, 12:04 AM
Replies: 45
Views: 2,484
Posted By supervel45
http://www.compcams.com/Company/CC/cam-specs/Detai...

http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1490&sb=2 This one?
Forum: Engine Tech   10-11-2015, 11:54 PM
Replies: 45
Views: 2,484
Posted By supervel45
You could go with a 280 cam and get by, it would...

You could go with a 280 cam and get by, it would not be right, but would make a nice freeway flyer especially in second gear pulls. That would be about as big as I would want to go with what you...
Forum: Engine Tech   10-11-2015, 08:20 PM
Replies: 45
Views: 2,484
Posted By supervel45
So you have a Comp 268H10 now? You want it to...

So you have a Comp 268H10 now? You want it to sound good and are not worried about a perfect combination? Step up to a 270 in a Isky or Comp grind or the Thumper and live with the decreased bottom...
Forum: Engine Tech   10-11-2015, 01:31 AM
Replies: 45
Views: 2,484
Posted By supervel45
Are you going to change gears and what is the...

Are you going to change gears and what is the stall speed at now? How much port work are you planning? I like the Edelbrock Performer RPM cam but, you will need to upgrade your combo for it to work...
Forum: Engine Tech   10-08-2015, 12:28 AM
Replies: 29
Views: 1,202
Posted By supervel45
http://www.cometic.com/technical.aspx ...

http://www.cometic.com/technical.aspx Check into your surface prep on the block and heads with the Cometic gaskets, to make sure it is proper.
Forum: Engine Tech   10-08-2015, 12:17 AM
Replies: 29
Views: 1,202
Posted By supervel45
I would consider the cam installed straight up...

I would consider the cam installed straight up per cam card instructions, and describe it as being installed 4 degree's retarded at the gear, if asked by others, to avoid confusion. You would have to...
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