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Dyno Day for the 1996 Mustang GTS with PI Heads and Comp 262 Cams
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- Опубліковано 24 бер 2021
- Does degreeing the cams and adding stronger valve springs increase power? This is an interesting video to me because I like to see numbers and what changes can make to those numbers. Bit of a back story on this engine. I built it a few years ago on a budget and tight timeline. I didn’t degree the cams and used factory valve springs. It made 265 whp in that configuration. I eventually ended up getting valve float so I took it apart earlier this year and replaced the valve springs with stronger ones from Comp. Since I had it apart I also degreed the cams and the driver side was off by one degree and the passenger side was off by 4.
It’s a Teksid block with -11cc Manley pistons, PI heads, Comp 262 cams, BBK intake plenum, BBK shorties, OR X-Pipe, and Magnaflow turndowns.
Website: JohnSmithRacing.com
Decent numbers considering the mild modifications. Good job!
Those are some nice numbers!!! Now port the heads and intake, and go on e85
Timing your cams on a 2v is extremely important! Literally you're timing two power curves together, meaning each bank of cylinders will make power at different rpms. So, timing a cam will change when the intake valve opening and closing events occur, thus changing compression of each side of the engine. Matching each side will line up the power curve into one, which is much easier to tune and makes for a better running engine. Rember if you do want to time your stock PI cams, advancing the cams will change the curve to peak at a lower rpm and retarding the cam will change the curve to a higher rpm. Adding a power adder like no2 you want to retard the cam so the engine will be able to deal with the cylinder pressure and at the higher rpm, the piston is at the dwell point for a shorter amount of time.
put that motor in a go cart then we are talk'in
Nice numbers man for an N/A two valve 👍🏻
Thank you, keep watching I plan to build a 400+ hp 2V soon.
Nice!
I'ma say the 248 on the door is in reference to the 248a option code for the 1996-98 Mustang Gt . . Factory lightweight. No power seats/windows. No mach 460 sound system, no fog lights, Factory rear spoiler delete. T45 with Factory 3:27 gears/ trac-lok diff. GTS was the 1995 version of this. I own a 96 248a myself .
That's correct. Mine doesn't even have rear defrost or ABS. It also only had 2.73 gears but know its got 3.55. I love it!!
@@JohnSmithRacing yeah no abs in mine but I do have rear defrost lol .. there can be different options along with the 248a .. power interior , mach 460 , etc. . Guess someone checked the 2:73 box when ordering the one you got. Hey BTW what the dimensions on your tire setup?
@@codyramos3200 The fronts are 275-40-17 and the backs are 315-35-17. I also run a Maximum Motorsports 1/4 inch spacer on the front and longer hardened studs all the way around.
I have a 96 248a in bright tangerine. Love all the factory weight reduction, makes making it lighter even easier
@@sategllib2191 bright tangerine.. I haven't seen that color in years ! Only a random drivers door at the junkyard in recent time..
Do you think ptv clearance would be an issue using this 262 cam on pi heads swapped to a npi block?
That's a good question. If they do clear, it will probably be pretty close. To help with clearance, Modular Head Shop sells stock valves that have a ground down head for another 0.030 clearance or so. They might also be able to answer that question.
When you degree in the cams, are the advanced, if so how many degrees?
@John Smith Racing are you using the stock 3-4cc dish pistons that the teksid blocks came with ? Pi heads n teksid block = 11.4:1ish static compression ratio ..
No, the engine has -11cc dish pistons. I believe the CR is around 10:1
What the best shift points with the 262 cams? Because I wanna put them in my 06 crownvic police interceptor
Thats decent mate, so 30rwhp? We didn't get the 2v's over here in Aus which is a shame. Did you gain usable rpm?
It seems like it did. If you look at the graph he took it to 6500 rpm and was falling off but not that bad. The Comp 278's would probably extend the rpm a bit more but I don't know if I want to sacrifice the low end torque to do so.
@@JohnSmithRacing Yeah I feel that, I just did the cams on mine. Lots some below 3500 but made nice gains up top, big cams though. Looks like you're happy with it anyway, 30whp.. I would be!
pistons -11
put a turbo in there and end it
Awesome setup, are the heads ported or stock?
Thank you, we did a mild hand port on the heads. Basically just cleaned up the casting flash and port matched.
@@JohnSmithRacing ok thanks
Long tubes on E85 i guarantee you it will be over 300 whp
E85 just doesnt pick up much NA unless you have a much wilder combo. It needs more air, not more fuel.
@madmod no but with his 10:1 compression there is Def gains to be had and with that and headers it works be over 300 which is what he said. Just headers alone would put it over 300 it's already over 290.
50 hp.. ?
What is your compression ratio with the head swap?
Around 10.5:1
@@JohnSmithRacing is that too high to run a supercharger on 93 octane?
@@krownvikkhris3004 The next higher combination would have put it at 13.5:1 and that's probably too high for the fuel here in CA.
Are u running non pi heads