AI 200cc heads&fow#'s. Guess my dyno.
#1
AI 200cc heads&fow#'s. Guess my dyno.
I just got my AI 200cc CNC ported heads bolted on & can’t wait to get everything going and tweaked on. They look sick, like the pics they put on their site of the 190’s with all the flanges cut. They also machined everything so it fit together without having to grind on bolt holes.
http://www.advancedinduction.com/images/CNCLT1VCR.jpg
All I care about is what it runs, but everyone wants to “race” the flow bench so lets get that out of the way first.….
Lift Intake Exhaust (no pipes)
.100 72.1 60.4
.200 148 116
.300 205 153
.400 247 173
.500 275 188
.600 284 194
.700 285 197
I know they all pretty much look the same these days. Ai says the actual flow numbers don’t mean much & that there are different ways to get the same flow or dyno number, but one of those ways will perform better than the others. We’re gonna find out soon.
Obviously the heads alone are just a part of the story. Here is the low down on the rest of the car:
355 cid LT1 block with a stock crank, Manly sportsman rods, 4.030” Mahle Powerpack’s, Main & head studs, double roller chain W/ e-water pump, solid roller, comp pro mag 1.6 rockers, AI ported “street/strip” LT-1 intake, AS&M 58mm TB, hooker 1 ¾ long tubes, slp 2OTL, 42 lb SVO’s. I’ve got a m6, 4.56’s in a moser 12bolt.
The car is full weight with all existing factory options & systems present and accounted for, and a nice PG amp and complimenting speakers. Ok, maby not all of them ( !EGR, !CAT ECT…)
I had wanted a hot 355 for street duties that I’ll drag race a few times a year. I wanted 440+ rwhp and at least 120mph traps. I wasn’t sure about the solid, but after my experience with the comp-r’s I told Phil I wanted to try the morel hydraulics with the new head and cam. He suggested a mild SR to eliminate the hassle of a HR. He also pointed out that the added spring pressure would serve as ‘insurance’ since I mayyyy, COUGH #! miss a COUGH gear at some point COHGH/ HACK, over rev the engine. Not to worry though I am confident in my ‘mad rowing skillz’ . Sorry guys, no specs on this cam, but it ‘s about 10deg smaller than the usual suspect cams that go in most of the faster solid 355’s, and the same .050” duration I see 355/383 HR guys run. I am told It’s not as aggressive as the XE lobes people run and is like 8X something degrees to 200 something or another. In short, they say it’ll drive like a smaller cam, I guess we’ll see.
I have a mail-order tune from CAM, and will get on the dyno as soon I can. I just want it to run hard when we take it to the track afterwards, but dyno days are always cool. My old Ai topend with a HR went high 11’s so hopefully it’ll be faster this time!
So what do you guys think?
http://www.advancedinduction.com/images/CNCLT1VCR.jpg
All I care about is what it runs, but everyone wants to “race” the flow bench so lets get that out of the way first.….
Lift Intake Exhaust (no pipes)
.100 72.1 60.4
.200 148 116
.300 205 153
.400 247 173
.500 275 188
.600 284 194
.700 285 197
I know they all pretty much look the same these days. Ai says the actual flow numbers don’t mean much & that there are different ways to get the same flow or dyno number, but one of those ways will perform better than the others. We’re gonna find out soon.
Obviously the heads alone are just a part of the story. Here is the low down on the rest of the car:
355 cid LT1 block with a stock crank, Manly sportsman rods, 4.030” Mahle Powerpack’s, Main & head studs, double roller chain W/ e-water pump, solid roller, comp pro mag 1.6 rockers, AI ported “street/strip” LT-1 intake, AS&M 58mm TB, hooker 1 ¾ long tubes, slp 2OTL, 42 lb SVO’s. I’ve got a m6, 4.56’s in a moser 12bolt.
The car is full weight with all existing factory options & systems present and accounted for, and a nice PG amp and complimenting speakers. Ok, maby not all of them ( !EGR, !CAT ECT…)
I had wanted a hot 355 for street duties that I’ll drag race a few times a year. I wanted 440+ rwhp and at least 120mph traps. I wasn’t sure about the solid, but after my experience with the comp-r’s I told Phil I wanted to try the morel hydraulics with the new head and cam. He suggested a mild SR to eliminate the hassle of a HR. He also pointed out that the added spring pressure would serve as ‘insurance’ since I mayyyy, COUGH #! miss a COUGH gear at some point COHGH/ HACK, over rev the engine. Not to worry though I am confident in my ‘mad rowing skillz’ . Sorry guys, no specs on this cam, but it ‘s about 10deg smaller than the usual suspect cams that go in most of the faster solid 355’s, and the same .050” duration I see 355/383 HR guys run. I am told It’s not as aggressive as the XE lobes people run and is like 8X something degrees to 200 something or another. In short, they say it’ll drive like a smaller cam, I guess we’ll see.
I have a mail-order tune from CAM, and will get on the dyno as soon I can. I just want it to run hard when we take it to the track afterwards, but dyno days are always cool. My old Ai topend with a HR went high 11’s so hopefully it’ll be faster this time!
So what do you guys think?
#5
Here is a short vid of my car starting up and cruzing the streets.
http://videos.streetfire.net/video/4...63001d65d6.htm
Nothing crazy, just trying to get some miles on it before the dyno.
http://videos.streetfire.net/video/4...63001d65d6.htm
Nothing crazy, just trying to get some miles on it before the dyno.
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#10
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Originally Posted by engineermike
120 mph is good for low, low 11's - even if the car just has a decent launch.
On that note, I ran a low 11 and only trapped 115. I never thought anything about it until someone noted that it was an "unusual" trap speed for that ET. I attribute it to my unlocked, shitty converter. I suspect I lost some mid range and top end power and is the result of my low trap. With a lockup, I think I could have run a high 10. Thoughts?