545 "Tune-up" , out with the old, in with the new

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545 "Tune-up" , out with the old, in with the new

Post  glenevans on December 22nd 2014, 5:56 pm

Going to make some changes to my 545 this year, so it will be a major "tune-up" ha ha The old parts: Pocket ported Dove-c iron heads with Ferrea 5000 series CJ size valves, exhaust ported to CJ gasket size, flat tappet 262* .640 lift cam, -22 cc dish probe pistons (11.1 compression), track heat 4150 intake manifold, 1050 4150 carb. The new parts: P51 heads (stock for now), solid roller .760 lift 274* cam , flat top probe pistons (14.1 compression), mafia manifold, 1150 holley dominator carb. I have never had aluminum heads or roller cams before, so will be all new to me. My 3500lb 1969 mach 1 would normally run 11.15 to 11.30 @ 121 mph here at 4400 elevation, so hopefully those times will be replaced with some "newer" quicker times !!!!!

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Re: 545 "Tune-up" , out with the old, in with the new

Post  droppedf100 on December 23rd 2014, 12:42 am

Sounds like a healthy upgrade. I personally would keep a dish piston though for pump gas capability. Unless it's track onl I guess.
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Re: 545 "Tune-up" , out with the old, in with the new

Post  FalconEh on December 23rd 2014, 1:49 am

Welcome to the 10's Cool
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Re: 545 "Tune-up" , out with the old, in with the new

Post  70FB on December 23rd 2014, 6:56 am

9.80s @800hp.
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Re: 545 "Tune-up" , out with the old, in with the new

Post  glenevans on December 23rd 2014, 11:59 am

Thanks for the replies back. I originally thought I would drive it on the street when I put this motor together back in 2009, but that rarely happened, so this go-round I'm going to try the higher compression route. With the elevation here we lose 13% of our power right off the top, shooting for low 10's and going to try to improve on the 60', maybe squeak into the nines Smile

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Re: 545 "Tune-up" , out with the old, in with the new

Post  glenevans on December 23rd 2014, 12:09 pm

Right now the car has traction bars from the 70's, M/T et streets. Going to replace that setup with cal-trac bars, stiff sidewall slicks and calvert rear shocks to try to improve on the 60' times

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Re: 545 "Tune-up" , out with the old, in with the new

Post  dirt_worker on December 23rd 2014, 12:37 pm

Yeah.....I went 10.90s w traction issues at firebird weighing 4150 lbs  w. virtually the same engine combination. I think your lighter more aero stang is gonna surprise you if you can get it to 60ft  Shocked
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Re: 545 "Tune-up" , out with the old, in with the new

Post  glenevans on December 23rd 2014, 1:13 pm

Hello Mike, can't wait to hear what your old cam sounds like in my car with the 14.1 compression. Be awesome....

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Re: 545 "Tune-up" , out with the old, in with the new

Post  4thHorseman on December 23rd 2014, 2:16 pm

I am familiar with altitude thing. I went a similar route with my '69. You can expect a solid second drop in ET right off the bat.
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Re: 545 "Tune-up" , out with the old, in with the new

Post  glenevans on December 23rd 2014, 2:31 pm

I might need to call you about setting up the cal-tracs when we get to that point, love the '69 mustangs !!!

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