Well as some of you know I have started a 73 project with my 16 year old son and know I am getting ahead of myself but am curious as to how hot this little car will be, can anybody make some educated guesses on what this car is going to do based on the following info: 302, Edelbrock Performer RPM heads, Edelbrock Air Gap intake, .496/223 intake, .520/232 exhaust cam, hydraulic, 1.6 roller rockers, MSD ignition/wires, Edelbrock 600 CFM carb, Hedman Headers with high flow exhaust (unsure which yet) C4 Tranny w/shift kit, 3.80 rears, 2500 stall, B&M Star shifter. Edelbrock says this set up is made to make power from 1500 to 6500 RPM and needs minimum of 3.70 rears or lower and 2500 stall. it is geared way tall right now and doesnt have a stall but wakes up nicely once going although the carb needs to be rebuilt and a good tune. Anybody?
I had a similar set up on a 65 mustang. High/mid 12's at 107 ish, only difference was mine was a roller motor.
I say with that combo he will loose his license in 9 months Oh that is not the prediction you were looking for? In alll seriousness, I would say mid to high 13's at around 103-105 mph.
It will be too fast for a 16 year old he would be better off with a 170 six cylinder three on the tree
You sure got that right. IMO, kids are too damned spoiled these days. Personally, I'm afraid of my kids joining the university of hard knocks and crash coursing autmobile physics too suddenly. Especially when you consider that any old Honda or Saturn you would buy them for a first car can still hit 130+ with just a slight tailwind. And most any of us here that own more powerful V6/moderately weighted sedans can also see that 150MPH isn't out of the picture either. Learned respect is always the best teacher.. but we still have to do our part as parents to prevent too many hard knocks from being accumulated too quickly. Having said that.. knowing my adrenaline junkie self.. and knowing that my kids have similar tendencies.. I would NEVER.. EVER.. consider giving them that much power coupled with an old low tech chassis and poorly designed brake system. Despite their always excellent skill levels with all things motorized, pushed, or slid.. that potentially a BAD RECIPE.. for all! Heavy cautionary thought is well advised. As for power estimates.. here's my biggest hurdles on just throwing power/accelleration numbers out there. More details about the cam grind being used would be great. Final static compression ratio(nore that this is not the same as advertised). 0 deckheight? Actual gear currently being used is most helpful for ET guesses. Stock 3.00 rear gear will make you feel like you got caugth on the line and then forced to reel in their rear bumper before having to change gears and start the process all over again. The engine will not stay up on the cam for very long. The car will be VERY fast.. maybe TOO FAST for a youngin'?. But.. on the bright side.. 30-40 MPH rolling starts will be a hoot. More detail about the exhaust size, specific muffler and overall design that's being considered would be good too. Otherwise.. if you want us to stab into the dark here(and without getting back into the safety aspects)?.. I'd guess the motor will be around 340-360HP with torque peak around 4,200-4,400 rpm. Which means that 2,500rpm stall speed is still too low for a moderate midrange cam like that, IMHO. Around 3,000 stall speed would really wake that thing up off the line(the motor is small'ish, has short'ish stroke and really likes torque/gear multiplication).. and be a more appropriate compromise while still allowing for heavy street driving.
yeah worn out linkage that jams in second gear so that every time a speed shift is tried you gotta get out and unjam it lol
Lmao Well thanks for all the replies, I assumed it is going to be fast, yes too fast for a 16 year old, however my first car was a 1966 Ford Fairlane GT, 390 H.O. that a grown gear head had built, it had what we called a 3/4 cam back then, headers, borg warner super T-10 toploader 4-speed, one big azz Holley carb, was punched over 0.30, the heads had been worked although I didnt understand what any of that stuff meant..........I had worked and worked, saved up my money and the guy wanted $1000, this was in 1978 mind you, I had $800. He took it, I learned how to drive in that car and even went to the state police to take my driving skills test (my cousin drove it there and couldnt handle it worth a flip) the trooper looked at the car then at me, told me to start it up and please try to picture his face when this thing came to life, lol. Anyway after making 4 right turns around a block and pulling back in he said "son 2 things, you have been driving this car alot to handle it already and your going to be getting in alot of trouble" he was right on both accounts. Anyway I got sidetracked but it seems todays kids (mine especially) are not the gear heads and power handlers that my group was back in the day but I'm wanting it to be geared low so it will hop to but not run 150 mph. Thanks for the input now ya'll have me worried....however my son promised he was never going to ever punch it hard, just cruise and I believe him I wish I still had that GT, I won't even say what I traded it for
Good guess I found the numbers with the power graph provided by Edelbrock for this exact set up, they say 367 H.P., 340 FT. LBS. torque. It makes it's power in the rpm range 1500-6500 so you just danged about nailed it....whew, this is alot in that light car
