Ford 6.2 potential

[SupStk]

Just a quick calculation.

Stan

Code: Select all

Engine Size =  378.9687 ci

Dyno Barometric Pressure = 29.921 - Dyno Vapor Pressure = 0.0 - Dyno Air Temperature = 60.0

                                 Fuel           UnCorr  UnCorr UnCorr Correct   A/F
  RPM   Horse  Torque   BMEP    lb/hr     BSFC      HP  Torque   BMEP  Factor  Ratio    SCFM    VE%
 7000   701.1   526.0  209.3   270.96    .3870   700.2   525.3  209.0  1.0013  13.00   769.1  100.2

I'm curious on the specifics you used for that model?

[Stan Weiss]

Just a quick calculation.

Stan

Code: Select all

Engine Size =  378.9687 ci

Dyno Barometric Pressure = 29.921 - Dyno Vapor Pressure = 0.0 - Dyno Air Temperature = 60.0

                                 Fuel           UnCorr  UnCorr UnCorr Correct   A/F
  RPM   Horse  Torque   BMEP    lb/hr     BSFC      HP  Torque   BMEP  Factor  Ratio    SCFM    VE%
 7000   701.1   526.0  209.3   270.96    .3870   700.2   525.3  209.0  1.0013  13.00   769.1  100.2

I'm curious on the specifics you used for that model?

That is not the results of a engine simulation so I do not have any engine specs.If that is not what you are asking then I am not sure what you are looking for.

Stan

[Casper393W]

We are having our own intake adapters made... We are going to run a Yates Style intake.. Our plan is to run small block nitrous races...

My buddy is having the block Sonic tested.. to see how far we can go safely on the bore.... Our biggest decision is on the crankshaft.. We are building this engine as a Max effort N20 build.... We are shooting for 14 to 1 compression... So we will need a custom winburg crankshaft made... We have found a place that can do the came for us...

The goal for the car is we will need to run 4.70's in the 1/8th to be competitive so it's going to be interesting

[mfdcar51]

I would purchase a set of the adapters if someone is making them!

[Casper393W]

When we get our adapters finished I will post pics and maybe we can make that happen! I'm wanting to build a milder street version for my truck and run a tunnel ram... There was a guy that swapped one in a Fox body mustang.. it had a completely stock bottom end with heads that were just cleaned up and a set of cams.. they we're 240/250 @ .050 .590/.601 lift on a 114 lsa.. that car runs in the high 9's @ 140mph!

[mfdcar51]

I have viewed pics of that car! Looking forward to your progress! I have a 2012 F250 6.2 for a daily driver.

[Rowdy Yates]

I like..... Hadn't read over this in a while... But 9.8 compression and low lift Cam made 600 it's a Ole book-marked thread. I'm scared of your mind.. LMAO. 14+ Comp sounds perfect, thought.... see if you can run the new LT1 ring size 1mm 1mm 2mm. Now if only a larger lift Cam could be used 650ish to further use those heads. That dyno test looks like Speedtrigger with the Ls 402 and OTB Dart Ls3 heads. 700hp is the new 600 NA on pump gas. Basic stuff 11.5 compression, small solid roller 24x dur. - 64x lift 708 fwhp. 800 NA with a factory iron block and factory heads from GM, Ford and Dodge is just to easy. Just with the Ford you gotta have everything done custom. Again your the man.

https://www.yellowbullet.com/forum/show ... p?t=793890

[Casper393W]

There is no doubt... I'm concerned with the Rocker Arms... The small hyd lash adjuster in the tip of the Rocker limits lift to around .600 lift. We will be working on a solution for that... When comparing to the GM counter parts that are making 700hp... They have the penalty of having heavy hyd roller lifters and pushrods etc. With a OHC arrangement we should be able to have a lighter more stable valvetrain setup! I will post some pics of the heads later tonight

[midnightbluS10]

Livernois has some stuff for the 6.2, including a cam and follower kit. You may want to check with them and see if they have a solution. I didn't check specifics when I saw it on their website the other day so it may be nothing. Just thought I'd throw it out there.


Edit: nevermind. I guess it doesn't have rockers/followers in the kit.

[Casper393W]

Thanks for the info, A guy that we know Todd Warren who is big in specing cams for Mod motors has found a source for the billit blanks for these engines... livernois doesn't publish specs for their cams...

I read in the thread that was linked above. That the cams he was was running had a 118 LSA... He was giving away quite a bit of power with that setup....in a NA app.

[JRice]

I remember back in 2009-2010 when I was at SAM we had a set of those heads show up. With some welding on the roof of the port around the spring pocket we got them to flow over 400cfm.

Later that week a couple guys showed up to the school, took the heads with them, and nothing was ever said about them again....

[Casper393W]

I remember back in 2009-2010 when I was at SAM we had a set of those heads show up. With some welding on the roof of the port around the spring pocket we got them to flow over 400cfm.

Later that week a couple guys showed up to the school, took the heads with them, and nothing was ever said about them again....

Wow that is crazy!

I have seen a cutaway of those heads and they are thin around the spring pocket forsure! Do you guys install bigger valves in them?

[Rowdy Yates]

There's alot on the table with just compression. After doing a quick re read the CSA after Foxlakes work was 3.4 with what was said 350 cfm it has the space at the port opening, sounds about right that welding is needed on the upper intake runner below the spring pads to match that nice opening. With a 3.4csa 400 CFM should be achievable with 2.165 - 2.20 valves . That's vs a Ls port that typically needs around a 3.2 CSA with a 2.20 + valve. I know there different heads just a Reference ψ. Have you decided on crank size with rods with that nice deck height? With the valve sizes mock it up with the intended valve wanted with the bore wanted. I had to use 1.55 ex. valves on the Ls7 to fit a .030 bore. If you can do something about the rockers?? Welding/ with added material for the pads and porting your top end should take care of that. What is the problem with camming over. 620+ honestly, 670.....no 700's perfect as I'm a solid roller Lover( I know you talked about the lash adjusters). Stroke, compression with Rpm = HP. I based my 408 with Ls3 heads Super Vic. & 11.5 compression at 740ish @ 7500. Ls7 heads with 13.2 compression 8k should net 800+. Both have less than 400 CFM and less compression. Your thoughts are on point.

[n2xlr8n]

I will post some pics of the heads later tonight

I'd like to see them when you can post.

[Casper393W]

Here are just a few pics. You can the inspiration from the Cammer in the rocker arm placement... They actually in my opinion made it better due to lowering the cam under the rockershaft's making it a narrower head. The rocker arm ratios are 1.53 for the 6.2 compared to the 1.3 of Cammer...

The Cammer head as cast with a 2.30 intake valve with a round port flowed around 340 CFM based off of what I have read...

I can't wait to see how much we get out of it!