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Search: Posts Made By: KCS
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06-18-2019, 12:02 PM
Replies: 31
Views: 1,738
Posted By KCS

It depends. If its just a mild street/strip...

It depends. If its just a mild street/strip build, you can get away with tight clearances but as you make more power and turn more RPM, you need to loosen it up.
06-17-2019, 07:51 PM
Replies: 17
Views: 780
Posted By KCS

4.200” has been done which leaves about .200”...

4.200” has been done which leaves about .200” between the bores. Probably need to use an MID kit rather than a dry sleeve.
06-17-2019, 12:40 PM
Replies: 31
Views: 1,738
Posted By KCS

That same catalog also tecommends .001” of...

That same catalog also tecommends .001” of clearance for every 1” of journal diameter in performance applications.
06-16-2019, 08:30 AM
Replies: 17
Views: 780
Posted By KCS

I don’t think its been done on a standard deck...

I don’t think its been done on a standard deck block, but I think theres room for a 4.30” stroke. That would get you about 478ci with a 4.20” bore.
06-14-2019, 06:32 AM
Replies: 631
Views: 33,217
Posted By KCS

I thought you meant Coefficient of Discharge like...

I thought you meant Coefficient of Discharge like as a ratio of observed flow to area. That’s how I understood the definition of CoD which I still can’t grasp how it would be of any value to someone...
06-13-2019, 06:23 PM
Replies: 631
Views: 33,217
Posted By KCS

How do you use something like coefficient of...

How do you use something like coefficient of discharge to select a head?
06-13-2019, 10:41 AM
Replies: 39
Views: 2,427
Posted By KCS

I’m sure it works, but I never saw high enough...

I’m sure it works, but I never saw high enough pressures with the 10295 and 10296 pumps on the LSX blocks I built to ever cause any desire for less volume. The Dart block was supposed to have the oil...
06-13-2019, 06:29 AM
Replies: 9
Views: 768
Posted By KCS

Thats a Comp camshaft. The top row is the...

Thats a Comp camshaft. The top row is the intake/exhaust lobe part numbers. The second row is hydraulic roller (HR) with a 116 LSA ground with 2 degrees of advance (+2).
06-12-2019, 11:07 AM
Replies: 631
Views: 33,217
Posted By KCS

Absolutely. General concensus is that .55mach is...

Absolutely. General concensus is that .55mach is the max average airspeed a port can maintain before losing power, and only the best port designs can do that. A shitty Ford 302 windsor head for...
06-12-2019, 10:52 AM
Replies: 39
Views: 2,427
Posted By KCS

Isn’t that oil pump meant for the Dart blocks?

Isn’t that oil pump meant for the Dart blocks?
06-12-2019, 10:46 AM
Replies: 631
Views: 33,217
Posted By KCS

MCSA diameter is usually 90% of the valve...

MCSA diameter is usually 90% of the valve diameter, so you would be looking at about 2.49sq inches for a 1.975” valve.
06-11-2019, 03:34 PM
Replies: 1
Views: 555
Posted By KCS

You have to make sure the pin bores in the rods...

You have to make sure the pin bores in the rods and pistons are the same size (ie .927, .945”, etc) and that the sum of half the stroke, the rod length, and the piston compression height is not too...
06-11-2019, 10:19 AM
Replies: 2
Views: 559
Posted By KCS

Etching is better, but I don’t think stamping is...

Etching is better, but I don’t think stamping is going to ruin the rods. Just sand the raised metal off the stamps and run it.
06-09-2019, 08:02 AM
Replies: 140
Views: 10,668
Posted By KCS

I don't really see what's difficult about it, but...

I don't really see what's difficult about it, but I agree, the average consumer is probably better off ordering a shelf cam or a custom from PatG, Ed Curtis, etc. If you know what you're doing, you...
06-08-2019, 09:13 PM
Replies: 8
Views: 908
Posted By KCS

Depends on the valvejob, but you should see a...

Depends on the valvejob, but you should see a gain just from the compression alone.
06-08-2019, 09:11 PM
Replies: 140
Views: 10,668
Posted By KCS

Comp just helped Ben Strader with a cam that was...

Comp just helped Ben Strader with a cam that was stable to 11,000RPM. I’m curious what other companies can same the same.
06-08-2019, 08:23 AM
Replies: 66
Views: 3,296
Posted By KCS

Either way can be reliable, it's usually your...

Either way can be reliable, it's usually your choice of engine builder/machinist that will make or break the combo.

Personally, I think you would like the 402ci combo better since it's mostly a...
06-07-2019, 08:26 AM
Replies: 631
Views: 33,217
Posted By KCS

Disharge Coeffiecient, how do you use that to...

Disharge Coeffiecient, how do you use that to pick cylinder heads?
06-06-2019, 12:15 PM
Replies: 209
Views: 10,659
Posted By KCS

Worst build thread ever.

Worst build thread ever.
06-03-2019, 06:07 PM
Replies: 84
Views: 5,278
Posted By KCS

Can’t really see much of the ports or valvejob,...

Can’t really see much of the ports or valvejob, but it doesn’t look all that great. They didn’t blend in the top cut or do any work to the chamber at all.
05-29-2019, 09:22 AM
Replies: 20
Views: 2,712
Posted By KCS

Was that on gasoline or E85?

Was that on gasoline or E85?
05-27-2019, 10:52 AM
Replies: 26
Views: 16,298
Posted By KCS

FWIW, the LS3 intake valve also has less margin...

FWIW, the LS3 intake valve also has less margin on the head diameter, so you gain about .5cc of combustion chamber volume compared to L92 valves.
05-27-2019, 10:40 AM
Replies: 631
Views: 33,217
Posted By KCS

A lot of power in an NA engine is from continuing...

A lot of power in an NA engine is from continuing to fill the cylinder after BDC. The more velocity the air has coming into the cylinder, the more the cylinder can be filled as the piston is moving...
05-27-2019, 09:46 AM
Replies: 12
Views: 2,526
Posted By KCS

I’d be surprised if that cam didn’t have PTV...

I’d be surprised if that cam didn’t have PTV problems with those flat top pistons.

What transmission will this he paired with?
05-26-2019, 05:54 PM
Replies: 31
Views: 2,397
Posted By KCS

My old 6.2L had a cam almost exactly like that...

My old 6.2L had a cam almost exactly like that one with unported 241 heads, an LS1 intake, 1-3/4" headers, and 11:1CR. I made over 400whp before 5200RPM with that combo on PatG's Mustang dyno. The...
Showing results 1 to 25 of 482
 


 
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