[shagadoodle]

k so yesterday bought the 2 5/8 mini tach for my car and wired it in and set it to 8 cylinders. I wired the ground to the - side of my voltage guage and the + to the hot on the voltage guage also. And the green went to the - side of the coil. At an idle the tach reads 600 rpm and like 500 in drive when i rev it up the tach will go up but i start hearing my exhaust crackle at around 3000-3500 rpm according to my tach. The exhaust is 2 inch with glasspacks...which i believe are stock at least it looks stock. i don't try to go past the crackle and can't take it on the road due to not having insurance to see how it does but can it go past that? is it reading wrong? im just curious cause my dad says its working fine but idk to me it just doesn't feel right when it crackls and its only 3000 rpm.

[Print Dad]

Originally Posted by shagadoodle

k so yesterday bought the 2 5/8 mini tach for my car and wired it in and set it to 8 cylinders. I wired the ground to the - side of my voltage guage and the + to the hot on the voltage guage also. And the green went to the - side of the coil. At an idle the tach reads 600 rpm and like 500 in drive when i rev it up the tach will go up but i start hearing my exhaust crackle at around 3000-3500 rpm according to my tach. The exhaust is 2 inch with glasspacks...which i believe are stock at least it looks stock. i don't try to go past the crackle and can't take it on the road due to not having insurance to see how it does but can it go past that? is it reading wrong? im just curious cause my dad says its working fine but idk to me it just doesn't feel right when it crackls and its only 3000 rpm.

Hello Shagadoodle,
Listen to your dad. He is right.
The tach seems to be working just fine. As far as higher revs.- - -It is not a great idea to just high rev the motor. Not great for the motor. When you do put the car on the road you will have a much better idea for what the motor can do. You should be able to take her to 5,000 no problem but>>>>>>>

Don't be in a rush to high rev. When the car is LEGALLY on the road. Take her out to a deserted place and try her out. Take her up to 4,000 rpms and see how she feels. The tach is just an instrument to check rpm's. It doesn't help the motor go faster or slower. The way the cars runs and how high she will rev depends on a lot of things. Things like timing, tune-up, carb set up, valves etc. will all have a great impact on the ability of higher revs.

So ,my last piece of advice.

SHaggy..DON"T take the car out with out insurance. Repeat....not even for a quick blast. Take it from an old man who has attended to many funerals and bailed out too many friends from jail

Be patient...listen to your dad and be well...... Print Dad

[shagadoodle]

Rightyo Idk its just new to me lol seeing the rpms on that thing. im used to seeing the rpms on a 4 banger saturn and those can go all the way up to 5k but lol I did take the mustang around my gravel road today staying in first gear the whole time lol....i love the power of the v8...when i first took off i had to counter steer left and right to keep the whole car from sliding....i never went over 2500 rpms but made it to 30 mph on my speedometer! lol not to shabby i have to say when i get a job my dad says he'll pay for insurance if i pay for gas ! till then ill be fine lol next project is either
A. complete cowl (one side to the other) and floor pan repair
or
B. start on the 5 lug swap which honestly i don't want to do right now lol cuz im happy with my 4 lug set up and rims as long as i treat my stang nice on the road it should be alright. plus don't got enough money to do that. I got the $ to buy the cowl and floor pans.