New track times...still not happy - Page 2

82 GT · 03-22-2005, 12:45 AM

According to my cam card, the cam makes it's peak power at 5500.
I'm gaining 22 mph between the 1/8 mark and the traps, which I'm told is good. I'm wondering just how much my carb, and intake is hurting me with gains like that.
I'm starting to lean towards improper timing in the dizzy or it's coming in too late.

HotRoddin · 03-22-2005, 01:38 AM

For the most part I agree with Rev & Dark5.0

My opinion would be to lose the Carter (they were crap 30 years ago, and unless they have made major changes to it, i'd say they are probably still crap).

I personally think a 650 with that combination is just cutting it to close to the edge. Get a 750 and spend some time getting it right on. Move up to an RPM or a Victor Jr. That motor is gonna want to suck some serious atmosphere.

I think you're flirting with the edge of the envelope with that stall too ... I'd move that up a little as well, even with the 4:10's

The heads are hard to judge ... to get stocker 351 heads to perform for spit with your combo, you would have to really do some extensive work on them, and it would have to be by somebody that knows his Shite. If it was just some joe blow that did the head work, they could very well be worse than they were out of the box, and thats not very good.

At any rate, let us know what you do and how it turns out !!

82 GT · 03-22-2005, 03:12 PM

Hey hotroddin, remember wayyyy back a year or so ago when I was still building this engine and you wanted to know how it turned out?
Well...you read it...13.4's out of the box with pretty much no tune.
It will do much better when I get the parts it wants.
Hey, it's the first engine I ever built and it seems to be a pretty good one that just needs fine tuned.
BTW, the guy that ported my heads is a very good guy and would recommend him to anyone.
When I was getting parts around for my engine I asked people who to go to for machine work and head work and they all said either this guy or a speed shop that was in the next town.
I'm going to get an advance kit for the dizzy and find out what exactly my total timing is and when it comes in.
I'll keep you posted

03-22-2005, 12:45 AM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Re: New track times...still not happy According to my cam card, the cam makes it's peak power at 5500. I'm gaining 22 mph between the 1/8 mark and the traps, which I'm told is good. I'm wondering just how much my carb, and intake is hurting me with gains like that. I'm starting to lean towards improper timing in the dizzy or it's coming in too late. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

03-22-2005, 01:38 AM	#2
HotRoddin cranky old man Join Date: Sep 2001 Location: Longview Texas Posts: 683	Re: New track times...still not happy For the most part I agree with Rev & Dark5.0 My opinion would be to lose the Carter (they were crap 30 years ago, and unless they have made major changes to it, i'd say they are probably still crap). I personally think a 650 with that combination is just cutting it to close to the edge. Get a 750 and spend some time getting it right on. Move up to an RPM or a Victor Jr. That motor is gonna want to suck some serious atmosphere. I think you're flirting with the edge of the envelope with that stall too ... I'd move that up a little as well, even with the 4:10's The heads are hard to judge ... to get stocker 351 heads to perform for spit with your combo, you would have to really do some extensive work on them, and it would have to be by somebody that knows his Shite. If it was just some joe blow that did the head work, they could very well be worse than they were out of the box, and thats not very good. At any rate, let us know what you do and how it turns out !! __________________ Under Construction: 64 Falcon 372 cu in. stroker 1:72 rod ratio 6.250" rods (long rod), Comp Cams XE274 230/236 520/526 @ .050, Scorpion Rollers, Roush 200 irons, 10:1 Keith Blacks, Hedman long tubes, 750 Holley DP, Edelbrock Victor Jr., C4 3500 stall, gears and tires to be anounced.

03-22-2005, 03:12 PM	#3
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Re: New track times...still not happy Hey hotroddin, remember wayyyy back a year or so ago when I was still building this engine and you wanted to know how it turned out? Well...you read it...13.4's out of the box with pretty much no tune. It will do much better when I get the parts it wants. Hey, it's the first engine I ever built and it seems to be a pretty good one that just needs fine tuned. BTW, the guy that ported my heads is a very good guy and would recommend him to anyone. When I was getting parts around for my engine I asked people who to go to for machine work and head work and they all said either this guy or a speed shop that was in the next town. I'm going to get an advance kit for the dizzy and find out what exactly my total timing is and when it comes in. I'll keep you posted __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

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