[wicked93gs]

1/4 mile calculator shows a 10.7

Not likely...he is running a 9" rear end....which will eat up 15% of that power...probably another 10% through the trans and driveshaft. Calculator says a best case scenario of 11.2 seconds with that factored in...if he has the traction and assuming a 3100lb weight on the finished car. More realistic is to say 11.5 or so....but my guess also means nothing. Its actually why I think aiming above 350HP is kinda futile...you start chasing diminishing returns and adding a lot of stress on the engine and make the car into an unstreetable race car at a certain point.

It would be more effective run through an 8.8" rear end with REM polished gears and an aluminum driveshaft instead...that would put him right at 11.0 with hopes of hitting a 10.9...but its more work to build an 8.8 to handle that type of power...would require a truss system and I would personally go with 9" bearing ends to get around all the c-clip eliminator goofiness....alternatively he could also add 30 more HP to the engine for the same effect...but that option just makes the engine more high strung and unstreetable than it already is.

P.S. To the OP...sorry for talking about you in 3rd person here, just trying to make the grammar sound correct for a reply to someone else. Is there a reason other than bragging rights you are trying to hit a 10 second 1/4 mile time? Is it a competition car?

 

[wicked93gs]

Lol no problem, it made it very easy to follow lol. I guess there's not really a reason for it to run 10's, it was just a goal of mine. I plan on racing it frequently but there isn't a track near me other than occasional drag races at an airport, and the cars there are all boosted or new corvettes, challengers etc. So I'm trying to keep up lol! but with an old school set up.

.. and my two buddies have a chevy and a dodge so I gotta stay out front lol

Heh, its a tall order to keep up with cars 50 years newer. They have too many advantages....a new Challenger or Charger can make 700HP and be perfectly streetable, much tougher to do the same on an old pushrod engine with a carb. To make huge HP numbers and be streetable with something like a 351w you are better off running EFI and turbocharging it(just copy what works for new dodges...force more air down its throat), even if you did that though, you lack the AWD, the traction control, etc. I do a lot of modifications to my 66 because I enjoy it...but I am pretty sure I would still be out-handled and out-accelerated by any new Mustang GT off the showroom floor...maybe even the ecoboost 4 cylinder...but hey, at least I don't drive a plastic car, so I am good.

P.S. My first classic mustang was a '67 Coupe....and its still my favorite year and body style...the design was near perfect that year.