air fuel chart
2016 GT Premium
Looks a little rich to me. I would think that an NA car would need to be at least 13:1 if not 13.5:1. If you show that chart to your tuner he might be able to lean it out a little. Looks like a pretty bad ass motor though . I bet if you get the tune cleaned up, get a bigger throttle body, and put in some race gas so you can bump the timing you could probably see 400 to the wheels out of that combo
2015 Charger Hellcat
2.4" upper pulley, ID1300 injectors, BAP, E85 tune, Cat Delete Pipes, One Piece Drive Shaft, Diff Brace, 305/35/20 555R's for the street and 305/45/18 MT ET Street R's for the track. 9.97@142 Best ET
85 GT
Heads and Cam plus other bolt ons
73 F250
Lifted, 35's, 460 4spd
Real name = Ray
1969 Camaro restomod/project
1967 camaro
2011 mustang procharged
93 reef blue notch blk/int
92 calypso notch blk/int
86 t-type
1972 chevelle project
Not only did I fail at building a fast mustang but I bought a yellow zo6 cause I couldn't get my little dick up.
All of our NA cars made the most power with AF's in the 12.5-13.0 range. Have you concidered retarding your cam? It'd move the rpm range up and take advantage of that intake. I'd concider putting 4.10 gears in it at a minimum if you stay NA and retard the cam.
-Paul
1995 GT 'vert
Best times on old 302 combo:
12.03 at 112.5mph NA
Best time with 9:1 compression NA dart block 331 setup:
11.50 at 121mph
Dyno'd: 415rwhp/410rwtq
2004 Z16 commemorative edition Z06
100% stock: 11.9 at 118mph
I will ask my tuner if he thinks my tune is a bit rich - seems like it to me.
I am planning to try a 75mm TB, I think the 65 may be a choke point. Plus, my upper is cut with a 75mm TB opening. Perhaps, with the extra air that will lean it out a bit also. I am planning to drop the car off with my tuner for 1 week(Ohio), he will be trying to tune out my hanging idle/stalling problem. He will also be tweaking the tune - I hope to get a 75mm TB before I give him the car.
I am also considering a custom billet cam from camshaftinnovations.com, but I am not excited about tearing apart the new engine until I am sure the problem is the cam. Some have said the stage 2 TFS cam is designed for Trick Flow heads and not the AFR 185s that I am running. Still not sure why it stopped making power at 5200????
Anyone hear of any problems running stock Ford roller lifters in a combo like mine????
2016 GT Premium
Here's an article that might lead you to believe the problem isn't the cam... http://airflowresearch.com/articles/article087/A-P1.htm 405 hp out of a stock shortblock 302. That's a flywheel #, but that's still probably around 340 ish to the tires out of a 302 with stock cam and compression. I'm not saying your cam is perfect for your application, but I don't think it's the main culprit here. Did you get the upgraded springs with the 185's? I know they recommend them for most cams, I don't know why they don't just come with them as is. There's tons of interresting articles on AFR's website. I've read most of them a couple times. Good luck with it man, I'm sure with a whole week and a bigger throttle body your tuner will be able to find quite a few more ponys
2015 Charger Hellcat
2.4" upper pulley, ID1300 injectors, BAP, E85 tune, Cat Delete Pipes, One Piece Drive Shaft, Diff Brace, 305/35/20 555R's for the street and 305/45/18 MT ET Street R's for the track. 9.97@142 Best ET
85 GT
Heads and Cam plus other bolt ons
73 F250
Lifted, 35's, 460 4spd
Real name = Ray
Thanks for sending me the article, that is pretty amazing on a stock cam. I do have the upgraded AFR valve springs. I reused the stock roller lifters - I am wondering if they are compressing to quickly with the bigger cam.
2016 GT Premium
I left a voice mail yesterday Kaufmanns to see what they would charge and if he would want to clean up another tuners problems. I tried contacting Kauffmans 3 months ago when I was looking for a tuner to burn the 1st chip for my new combo. However, I left 3 voice mails and sent 1 very detailed email to them, but they never called me back. I figured that was a red flag to avoid Kauffmans since they would be difficult to reach if I needed tech support after the tune. The tuner I went with(Don Lasota) returns emails and phone calls within 10 minutes, which means a lot to me. If Kaufmanns calls me back, then I will give them a shot.
2016 GT Premium
I hope Kauffmans calls me back. My dyno tuner agreed to mechanically check my car over and tweak the tune for free at his shop, but he doesn't have a dyno. I am not sure how he could change the tune without being sure he isn't hurting power. Perhaps he will do data logging, but I doubt it will be as accurate as using a dyno. I have to do 16 hours of driving to get my car back and forth to my tuners shop(Columbus) - I plan to leave the car there for a week. I want to be sure all the driving is worth the results that I will get.
2016 GT Premium
I know Don and he is a great guy and IMO he knows his stuff too. I disagree with the tune being the total fault here of your lack of power. You have great flowing heads and and intake that should have you making power well into the 6500rpm range, the cam is the main component holding that up. Are you sure you have 10.6:1 compression? How are all of your transitions between parts... meaning are there any lips or walls that the air is hitting as it transisitions from part to part. Example: TB to upper intake, upper to lower, lower to head, etc. All of these transitions should be as smooth as possible, make sure the gaskets are trimmed to the port size, etc.
My old combo consisted of:
AFR165 60cc pedestal mount heads
edelbrock performer intake
65mm TB
75mm MAF
stock shortblock
http://www.flowtechinduction.com custom cam
shorty headers
offroad X pipe
dynomax welded race magnum mufflers w/ stock tail pipes
4.10 gears
eec tuner
I made 304rwhp/331rwtq with this combo. I also ran a 12.3 at 110 on 315 series nitto DR's, and a 12.03 at 112.5mph on ET streets. With your combo you should be well ahead of my times and power production, hopefully we'll help to figure out why.
I STRONGLY suggest concidering looking into the cam at some point down the road after your sure you have all of the other mechanical things sorted out. For a cam I'd highly suggest contacting Ed Curtis at flow tech induction http://www.flowtechinduction.com . He can be hard to reach but he knows his stuff and has been one of the most helpful people I have ever met in this hobby... once you are a customer.
-Paul
1995 GT 'vert
Best times on old 302 combo:
12.03 at 112.5mph NA
Best time with 9:1 compression NA dart block 331 setup:
11.50 at 121mph
Dyno'd: 415rwhp/410rwtq
2004 Z16 commemorative edition Z06
100% stock: 11.9 at 118mph
I agree that my cam may not be perfect, but I think there is more to be had from this combo as it sits, especially with air/fuel at 12. I plan to try the 75mm TB and play with air/fuel before I tear apart my new engine and install a new cam. I think Don and Rob will fix my driveability/stalling problems. I will have to check the transitions at some point and the compression was advertised at 10:6 to 1 with the 58cc comb chamber. My block was not decked and I used standard head gaskets. I did a compression test last night just for fun, all cylinders were 155 give or take 3psi. I broke an AFR rocker stud a month ago and replaced all 16 with ARP 3/8 studs. When I took apart the roller rockers, I noticed several were not adjusted properly and were loose at the valve tip. I reset the lash and ordered slightly longer pushrods (6.300) since the wear pattern looked a bit sloppy. An improperly adjusted valvetrain may have also caused lower power numbers. Also, I bought a new, old stock Ford distributor and a new ICM ignition module. I found good deals on these items on eBay. I figured an electrical problem may be causing the hard, hot restart problem and they may improve power a bit also.
2016 GT Premium
Do you have an aftermarket ignition on the car? If not id reccomend a Crane hi-6s ignition box & coil. Thats what I run and im extremly happy w/ it. A custom cam will help you gain some power & rpms, but that is not the main culprit here. You should easily be running 110mph+ w/ your combo as it sits. Get the car mechenically 100% then take it to Kauffmans for an agressive tune. Im sure your car will put down 350rwhp and 370rwtq once you have everything figured out. Good luck!!
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