AI 243 heads with stock cam
05-27-2012, 05:56 PM
#1
AI 243 heads with stock cam I went to the DYNO yesterday by Geoff with my 243 AI 226 heads that where milled .008 with a .045 head gaskets and the car made 353 hp and 355 tq. The car is a auto with yank 3600, BBK header, fast 92, stock cam. I have a 230/238 cam from Geoff and it will be going in sometime in the next few weeks. I didnt dyno the car before but I think I picked up a solid 35 hp to the wheels.
05-28-2012, 09:36 AM
#3
I think I would have expected higher number's. Most full bolton only car are making 350-360 (with stock heads & cam). So without the heads but still having full bolton's your car is only making 320rwhp?
was the convertor locked or unlocked?
your 11.97@112.2 is very good for just bolton's in a full weight car.
Could be a stingy dyno.
was the convertor locked or unlocked?
your 11.97@112.2 is very good for just bolton's in a full weight car.
Could be a stingy dyno.
05-28-2012, 02:00 PM
#6
I will have to check with Geoff on the converter being locked. The car was never dyno tuned just basic tunning on the street. I just wanted to pull it and make sure the tune was not way off and get a base line before the cam. We could have maybe got a little more out of it but I didnt want to waist time on it being the cam is going in shortly.
05-28-2012, 02:18 PM
#9
I would say its going to be more then that auto cars with stalls dyno 318 to 328 all day long. So 30-35 to the wheels is going to be close to 50hp with just a head swap and no other changes. I will try to get to the track in the next couple of weeks, Im expecting to see 114 mph if the heat doesnt kill it.
05-28-2012, 07:37 PM
#10
On The Tree
iTrader: (7)
Join Date: Nov 2009
Location: Tigard, Oregon
Posts: 171
Likes: 0
Received 0 Likes
on
0 Posts
Nice job! That stock cam will not be able to take advantage of your new found head flow, in fact its surprising to see that much gain with just heads imho, with that cam i wouldn't be surprised if you get 425rwhp+ and 390tq
05-29-2012, 01:06 PM
#11
Very sturdy and not surprising. AI knows how to optimize a given setup and work heads accordingly. That's a reliable *** setup right there. That would be knocking on the door of 400rwhp in an M6 (maybe over if converter unlocked) and no worries about spring changes. Put some Kooks or ARH 1 7/8 headers on it, tune it properly, and drive the **** outta that thing like it is!
05-29-2012, 02:19 PM
#14
10 Second Club
iTrader: (1)
Join Date: Sep 2007
Location: In Uranus!
Posts: 1,500
Likes: 0
Received 0 Likes
on
0 Posts
I think I would have expected higher number's. Most full bolton only car are making 350-360 (with stock heads & cam). So without the heads but still having full bolton's your car is only making 320rwhp?
was the convertor locked or unlocked?
your 11.97@112.2 is very good for just bolton's in a full weight car.
Could be a stingy dyno.
was the convertor locked or unlocked?
your 11.97@112.2 is very good for just bolton's in a full weight car.
Could be a stingy dyno.
Dyno's aren't accurate when reading a stalled auto car.
05-29-2012, 02:54 PM
#15
Most bolt-on cars made 350-360rwhp? I don't think this is accurate.. Maybe through a 6-speed but not an auto. When my car was a bolt-on car and a 4200rpm stall it only made 298rwhp and ran a 12.60@107mph. Stock it went 13.60@104mph. Then I went H/C/I the car made 447rwhp and ran a 10.90@123mph 1.46 60ft..
Dyno's aren't accurate when reading a stalled auto car.
Dyno's aren't accurate when reading a stalled auto car.
06-03-2012, 10:22 AM
#18
Awesome! I'm suprised it picked up that much, especially wihout messing with the WOT tune that much. Those heads must really flow at low lift. Without a lot of dyno magic, you won't find a bolt on only stalled auto putting out this much. Period. Great numbers man.
Just curious, why did you do the heads first and not cam? Thanks for the post, I've been looking for something like this for a while.
Just curious, why did you do the heads first and not cam? Thanks for the post, I've been looking for something like this for a while.
