who has built a 289 street strip mav or comet

Sounds like your getting there. Your gonna have to tune it to death but 11's are possible. For comparison you have some better parts in your motor than I do and mine will run high 12.20's with mid 1.7 60fts. And 7.80's in the 1/8th.

 

good tires and a nice launch, you will be sub 13's if you have posi. I was running 13.80 - 13.20's on a pepboys motor with exhaust gasket matched junk heads small valves/ 3.80 posi T-5 with Mickey thompson ET streets. I had 240 RWHP the car weighed 2950. Every car acts different, every track is different. Just build it and have a ball.. you will find the weak points eventually

 

i figure im in the 12.50s to 60s range now,hoping now that i added a floor shifter,and can shift it now it will go faster, it was in drive by the 100 ft mark ,i also added a mild shift kit,it was slow shifting into drive ,did a buck before going in, now it shifts firm into all gears,1st to 2nd was slow ,before,im hoping for 7s this summer,i think it would go faster 1/4 times its pulls so hard out the big end,im also going to replace the stock fuel pump with a 110 gal a hr mech pump, the bottom end is hipo 289 stuff what ever that is lol, it does have arp rod bolts,polished beams,it looks to be balanced i did see some grinding on the rods,flat top pistions,id go bigger on cam but didnt want pistion to valve clearance problems,it does have some dur,so should make power,im hoping to pick up 4 or 5 tenths ,i bought some 27/10 et streets this year,alittle taller but hoping that shifting will make up for the loss in tire height,this thing goes crazy at about 4800 rpm,but that was at finsh line before now should be there or higher the whole way down,id like to get up to us41 and run some 1/4 mile this year ,and if the meet is near a track im going to race it there

 

the 289 is a 28oz balancer and fly wheel bolt a 50 oz on there and shes gonna come apart

 

When you say Boss..................what I picture is a set of Boss 302 heads on a 289 block........................back in the day they used to call this a Clevor..............................do you have a picture of the heads you took off and replaced with the AFR's?
So, did you remove the heads that were on the motor?
What were the heads casting numbers?

The 289HiPro had 3/8" rod bolts, where the stock 289/302 had 5/16" and although people say they are the same rod, my early 289HiPro rods had a bigger/square bottom end. The Boss 302 had the same rods although the top of the rod bolts on the Boss were oval and the HiPro's were square.
The HiPro had a high nodular iron crank and the Boss was steel and cross drilled.

 

what do you have on the rear to aide in limiting the axle wrap? A set of cal-tracs are ideal but I have used slapper bars, (bent them) and have also used other "slide a link (much like the cal trac) it seems you are on your way to a fun summer

 

i have cal tracs i love um it doesnt spin a tire on the starting line,i dont think i could get it to spin on starting line lol,and the heads that came off are 1972 cleveland 2 bbl heads,it was a boss clone motor, i have the heads and intake boxed up,and rapped to protect them from damage,if i get them out i will get the id #s,i knew it wasnt a real boss when i got it ,but i thought it would be cool in my maverick,but it got a water leak in the front of the intake some where so i ran accross the heads so went that derection

 

it had a 50oz one on it but it was for a c6 trans so to big to fit in my c4,could it have been balanced for a 50oz,maybe i need to check into that,i havent felt any vib.,in the motor

 

The secret to slapper bars is to extend them so that the rubber lines up with the front eye of the spring. Set the right snubber with a 1/4'' clearance and the left (drivers) side at 1/2 .''
This set up got me into the 12s. It also got GRUMPY JENKENS deep into the 10s.
As far as the 289 vs 302, my second 302 stretched rods @ 7000 rpm so my engine builder and I decided to blueprint a STOCK 289 bottom end with good bolts and go from there. I grew up racing 2 strokes so a high winding 289 was music to my ears.....8800-9000 launch and pull the handle 3 more times @ 8200. Did I mention I don't use a rev limiter....never needed one!

 

I just had an off the shelf set from Autozone ... they were crap, my suspension was stock and the rear leafs were worn out, I had them adjusted correctly, just too much power.. (no it was just cheap parts)

 

all i can say is wow .......lol, i looked at your comet pics i love the look ,and that launch is badass,thanks for input

 

Thanks. Just to make sure there is no misunderstanding, those pics were after the car was tubed and a 3 link installed which helped me into the 11s.
I was merely stating that a good ladder bar set up has a lot of potential.

 

I was using slapper bars on the white maverick in profile pic did 1.49 60ft wheels up to 2ft in the air,but I like cal tracs better

 

I'm running ladder bars that were put on the car in 1978 when it started running NHRA B/SM...............they work ok, and with the old motor/trans and headers it did a 1.410 60' with the tires just off the ground. Here is a picture of the ladder bars and as I said they work Ok, but if I were to do it over again I'd probably use CalTracs.................they have gone 8's on more than one drag car.

 

I love a double adjustable ladderbar setup, but its cool to just have a cal trac setup. There just so simple to work with,I mean you can move the ladderbar up in the front and put a car on its bumper easy with a loose converter