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Re: 512 low deck on the dyno
[Re: HardcoreB]
#2958961
08/30/21 10:37 AM
08/30/21 10:37 AM
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Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,504
So. Burlington, Vt.
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As I recall, when that cam was first used....... it was in the 470 with the 240 heads. And there was a spring change done on the heads as well, to K-motion K-950’s, which have a higher rate and a higher lift capacity...... to facilitate the planned rocker ratio test.
At .700 lift, the K-950’s would have almost 100lbs more force than the springs that come on the TF heads.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: 512 low deck on the dyno
[Re: AndyF]
#2959096
08/30/21 05:40 PM
08/30/21 05:40 PM
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Joined: Mar 2009
Posts: 2,464
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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I would expect the same thing. Putting a TF270 head on a 800 hp engine would most likely turn it into a 750 hp engine.
I think the TF head is perfect for a stock block bracket guy. If you have a stock block then you don't really want an 800 hp head since you'll crack the block. So a super nice CNC head that delivers 700 to 750 hp right out of the box is a perfect solution. Guys who have stepped up to aftermarket blocks should also step up to a head with more capability since there is no reason to limit themselves to 750 hp. i guess i am this guy . Sometimes you need to limit the car for safety . My car is legal to 10.00 , cage restricted , so no need for the extra HP . I have no desire to go faster as that entails cage upgrades , SFI recert/replacement , going to a delay box , might as well go a roller cam , licence upgrade , and really i would need a tow car and trailer . I split a stock block @ 650ish , now have a World iron block .  Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: 512 low deck on the dyno
[Re: AndyF]
#2959106
08/30/21 05:55 PM
08/30/21 05:55 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Stop tempting me to EFI the dart. I already have the O2's, fuel system....and my 1050AN doesn't like my 451 unless the n20 is activated.
Is this a 4.25" stroke/6.535" rod/2.200" journal combo? A Sniper 4500 would bolt on your combo fairly easily. I think it is a 440Source rotating assembly but I'm not positive. Parts have been hard to come by recently so the engine shop uses what they can find. After seeing Dwayne's 4500 flanged street dominater intake in my GTS thread this could work. Is the terminator any taller than a normal Holley? This has been an informative thread thanks for posting up on your results.
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Re: 512 low deck on the dyno
[Re: racerx]
#2959606
08/31/21 05:26 PM
08/31/21 05:26 PM
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Joined: Mar 2009
Posts: 2,464
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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I split a stock block @ 650ish , now have a World iron block
Tex .....kind of curios was this a tall deck or a short deck block and what weight?......Thaxs. Racerx . RB block . Just under 3700lbs . It was stuck in the 10.50s with CNC source heads , started showing a smidgen of moisture in oil then blew a little oil out but ran great . Swapped TF270s on thinking heads but nope . Went faster still broken . I imagine most after breaking a block would if possible then step up the block to avoid a catastrophic failure and possible vehicle damage . That was my thinking . Still have my stock stroke 440 less worrid about that . Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: 512 low deck on the dyno
[Re: tex013]
#2959701
08/31/21 09:05 PM
08/31/21 09:05 PM
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Joined: Aug 2008
Posts: 4,071
Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,071
Mo.
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I split a stock block @ 650ish , now have a World iron block
Tex .....kind of curios was this a tall deck or a short deck block and what weight?......Thaxs. Racerx . RB block . Just under 3700lbs . It was stuck in the 10.50s with CNC source heads , started showing a smidgen of moisture in oil then blew a little oil out but ran great . Swapped TF270s on thinking heads but nope . Went faster still broken . I imagine most after breaking a block would if possible then step up the block to avoid a catastrophic failure and possible vehicle damage . That was my thinking . Still have my stock stroke 440 less worrid about that . Tex Thanks 
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