What rpm do you think i will come thru the traps at ?

Everything from the motor to the wheels

Moderator: John_Heard

Post Reply
Message
Author
434 nova
Posts: 95
Joined: Fri Dec 28, 2007 12:32 pm

What rpm do you think i will come thru the traps at ?

#1 Post by 434 nova » Wed Jun 02, 2010 1:25 am

Car has 28 inch tall tire 4500 stall and 4.10 gears. What rpm do you think i will come thru the traps at i am trying for 7200 rpm i may have to step up to 4.56 gears. thanks

User avatar
supernova
Posts: 2552
Joined: Sat Feb 02, 2008 7:35 pm
Location: Ft.Worth Tx

Re: What rpm do you think i will come thru the traps at ?

#2 Post by supernova » Wed Jun 02, 2010 5:18 am

1/8 mi. or 1/4 mi. ? I have 4.30 gears a 28" tire with a powerglide and should cross at 6900-7000 rpm's on the 1/8 mi......
Last edited by supernova on Wed Jun 02, 2010 10:18 am, edited 1 time in total.
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: What rpm do you think i will come thru the traps at ?

#3 Post by clutchdude » Wed Jun 02, 2010 9:57 am

I also have 4.30 gears and go thru the 1/4 at 7000.....really depends on how much power you have and the weight of the car.

427belair
Posts: 284
Joined: Tue Aug 15, 2006 10:23 pm
Location: greatfalls,mt

Re: What rpm do you think i will come thru the traps at ?

#4 Post by 427belair » Wed Jun 02, 2010 10:53 am

My car runs 135 mph in the 1/4 turns right around 7k through the traps. 28x10.5 tire with a 4.3 gear. You need to factor in converter slip into the rpm at the stripe.

434 nova
Posts: 95
Joined: Fri Dec 28, 2007 12:32 pm

Re: What rpm do you think i will come thru the traps at ?

#5 Post by 434 nova » Wed Jun 02, 2010 2:25 pm

I am looking for 1/4 mile car weights in around 3200 and car has a 434 sbc making 650 hp.

clutchdude
Posts: 165
Joined: Wed Nov 22, 2006 6:10 pm
Location: Lancaster CA.

Re: What rpm do you think i will come thru the traps at ?

#6 Post by clutchdude » Wed Jun 02, 2010 3:27 pm

My guess would be 4.30 or 4.56 is what will be needed.....but if you have 4.11's now...i would start with them.

434 nova
Posts: 95
Joined: Fri Dec 28, 2007 12:32 pm

Re: What rpm do you think i will come thru the traps at ?

#7 Post by 434 nova » Wed Jun 02, 2010 5:13 pm

Is there a formula or calculator to determine trap speed? thanks

427belair
Posts: 284
Joined: Tue Aug 15, 2006 10:23 pm
Location: greatfalls,mt

Re: What rpm do you think i will come thru the traps at ?

#8 Post by 427belair » Wed Jun 02, 2010 8:47 pm


Post Reply

Who is online

Users browsing this forum: No registered users and 15 guests