Cam for a 406?

[CHRIS.O]

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This is either the 292 or the XE284 which is similar to the 292 but the XE line is much more aggressive. I am leaning toward the 284, hes had both cams in different stuff and I am pretty sure I remember the box and part number starting with XE for the s10's engine.

 

[Smokes442]

Yeah i here ya, Awhile back i got to puching in #s through wallace racing calcs, I was running 12.5s with another name brand car, nothing more then a junkyard shortblock, car weighed around 3200 with me, 2800 stall & 3.7s gears, 1.80 60fts., According to the cal. my RWHP was 290-295, MPH was 105, around the same calculation, I ran 10.8s at 3150 about 5yrs. ago (other name brand lol), calculators showed around 420-425 RWHP, so i just can't see mid 12s at that level unless your at 38-3900 lbs. I have seen this alot on the chevy boards, high HP #s & crappy ETS out of cars that aren't that heavy "what gives" :shock:

 

[CHRIS.O]

You know man I wonder the same thing about the et's. 12's are absolutely no joke but I've seen lt1 and ls1 f bodies with bolt ons running in the 12's. I've seen cam only lt1 cars running low 12's. So yea it is kind of weird. Weight wouldn't be a factor in that comparison either, they weigh about the same. Actually my formula with 1/4 tank, no driver came in around 3450 lbs. Maybe it is weight distribution or something. I have very little experience drag racing G body cars aside from a little stop light action when I was a dumb teen.

 

[chevy2480]

Well here goes one for you my buddies cutlass was 3760 with him in it car went 11.62 @112. He dynoed car it only made 346rwhp. His motor was a 383 striker 10.2 to 1 comp cam with 520/525 lift 286duration AFR old 195 heads victor it intake. 4.10 gears and 700r4 3500 stall

Never dynoed my old combo Which was a 406 11:1 dart iron eagle 215 crane SNS 518/536 solid flat tappit. Th350 3200 stall 3.42 gears car went 11.79@110 with a 1.67 60ft. Heads where a little big and car would get lazy top end. Car tipped the scales fully dressed at 3445. With me in it.

Motor in signature in same car with bad trans and 4.10 gears went 11.18@117 60ft unknown computer screwed up. With everything In signature car gained 200lbs and now is 3645 with me.

There is so many variables that change a cars et. I have seen cars that should go 10 go 12's seen car that shouldn't go faster then 13's go low 12's. Motors are like women they give it up every now and then. Lol

 

[Smokes442]

Back about 5 yrs. ago in Tx, i was at my local outlaw track, this little S10 pulls in the waterbox (about a 2000 model), it was a shortbox 2wd., sat level, looked very tame, had some small DRs on the back, the guy that built it was in his late 50s, early 60s, he pulls up to the line, clicks off mid 7s in the 1/8, tagged & legal, he was not running nitrous, it was all motor, the truck just "worked", then your next S10 comes up with a beefy 454 & goes 7.2s WTF lol go figure. My 97 Z28 6sp. ran 13.3s with just bolt-ons & 160K miles & 4.10 gears, 60fts. were 2.0s so that wasn't the reason for the good ETs, I'll bet there wasn't but 275 RWHP & there not what you would consider light. I'm guessing 35-3600 with me. (i'm 145), ya lightweight.

 

[Smokes442]

Well here goes one for you my buddies cutlass was 3760 with him in it car went 11.62 @112. He dynoed car it only made 346rwhp. His motor was a 383 striker 10.2 to 1 comp cam with 520/525 lift 286duration AFR old 195 heads victor it intake. 4.10 gears and 700r4 3500 stall

Never dynoed my old combo Which was a 406 11:1 dart iron eagle 215 crane SNS 518/536 solid flat tappit. Th350 3200 stall 3.42 gears car went 11.79@110 with a 1.67 60ft. Heads where a little big and car would get lazy top end. Car tipped the scales fully dressed at 3445. With me in it.

Motor in signature in same car with bad trans and 4.10 gears went 11.18@117 60ft unknown computer screwed up. With everything In signature car gained 200lbs and now is 3645 with me.

There is so many variables that change a cars et. I have seen cars that should go 10 go 12's seen car that shouldn't go faster then 13's go low 12's. Motors are like women they give it up every now and then. Lol

But you can only minipulate Physics so much, RWHP & race weight go hand & hand, assuming everything is up to stuff in the tune including suspention. Those 2 combos you showed me make "perfect" sence as to where they should be at ET & MPH for the weight/HP level along with 60fts. thereabouts. So if you think you 500 HP engine should only run 12s in a 33-3400 car then somethings way wrong.

 

[chevy2480]

Back about 5 yrs. ago in Tx, i was at my local outlaw track, this little S10 pulls in the waterbox (about a 2000 model), it was a shortbox 2wd., sat level, looked very tame, had some small DRs on the back, the guy that built it was in his late 50s, early 60s, he pulls up to the line, clicks off mid 7s in the 1/8, stagged & legal, he was not running nitrous, it was all motor, the truck just "worked", then your next S10 comes up with a beefy 454 & goes 7.2s WTF lol go figure. My 97 Z28 6sp. ran 13.3s with just bolt-ons & 160K miles & 4.10 gears, 60fts. were 2.0s so that wasn't the reason for the good ETs, I'll bet there wasn't but 275 RWHP & there not what you would consider light. I'm guessing 35-3600 with me. (i'm 145), ya lightweight.

You also need to remember ET is determined by your 60ft have a low 60ft et will show it. It's not horsepower that gets you going it is torque so good torque will get you moving then it's HP that needs to come in at an perfect rpm where tq and HP meet hit that sweet spot and your golden. HP pulls you the remeander of the track.

 

[chevy2480]

Not saying a 500hp motor should only run 12's a 500 HP motor in that light of a car should IMO should go 11's. All I am stating is simply that some time things don't seem right. I have seen 400hp crate motors in 3700lb cars go high 11's. Like I said many variables come into play.

 

[Smokes442]

Back about 5 yrs. ago in Tx, i was at my local outlaw track, this little S10 pulls in the waterbox (about a 2000 model), it was a shortbox 2wd., sat level, looked very tame, had some small DRs on the back, the guy that built it was in his late 50s, early 60s, he pulls up to the line, clicks off mid 7s in the 1/8, stagged & legal, he was not running nitrous, it was all motor, the truck just "worked", then your next S10 comes up with a beefy 454 & goes 7.2s WTF lol go figure. My 97 Z28 6sp. ran 13.3s with just bolt-ons & 160K miles & 4.10 gears, 60fts. were 2.0s so that wasn't the reason for the good ETs, I'll bet there wasn't but 275 RWHP & there not what you would consider light. I'm guessing 35-3600 with me. (i'm 145), ya lightweight.

You also need to remember ET is determined by your 60ft have a low 60ft et will show it. It's not horsepower that gets you going it is torque so good torque will get you moving then it's HP that needs to come in at an perfect rpm where tq and HP meet hit that sweet spot and your golden. HP pulls you the remeander of the track.

So does torque, torque is HP, always has been, torque doesn't just play a role in 60fts., its all accross the board, Yeah ET is determained by your 60ft., But theres a line there to in calculating, You do know a car running 14s will not have a 60ft. of 1.5s right!!, but a car running 11.0s shouldn't have a 60ft. of 1.9s either, All you need to do in determaning what a car should run ET is by its "weight" & trap MPH, then you can narrow it down along with the 60fts. they should be running for that ET range. Just remember it isn't just HP that moves masses, its more the torque, We can have the exact'd same vehicle, everything the same, but i'm making 50 more lb. ft. torque then you, who do you think will run faster, even up top at the end of the track. "torque"

 

[Smokes442]

But i understand what your saying, Now from those 2 combos you listed the RWHP/weight seem right for the ET & MPH, 60fts. in the 1.6s are close to for high 11s, so those cars are working.