521 2bolt block
+9
tfsbbf466
bbf-falcon
LivermoreDave
IDT-572
kjett
richter69
kim
cool40
v-twin
13 posters
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521 2bolt block
v-twin September 19th 2013, 12:56 am
I have a 521 with scat cast crank ,2 bolt block jon kaase heads, comp kaase 726 lift cam,diamond 36cc dish pistons .My question is how much more can it take It's in a 2000 mustang 3.73 gear 275 pros 9.90,s on motor on spray 8.93 150 1/8 is 1.29 60' 5.712 122.68 car weight is 3300# that's at bristol,tnn
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
cool40 September 19th 2013, 2:04 pm
The crank would be first to go.2bolt blocks are tuff as long as the tune is good.
cool40- BBF CONTRIBUTOR
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Re: 521 2bolt block
kim September 19th 2013, 3:51 pm
Rods and crank are the short fuse in the combination, and I only mention rods, because OP didn't. 2 bolt blocks, pretty damn stout as long as the RPM is kept down.
kim- Posts : 700
Join date : 2009-06-27
Location : Tucson AZ
2bolt block
v-twin September 20th 2013, 12:20 am
well let me ask in a different way is 8.90s' safe It will go 8.60s' I don't want to hurt it before I build a good engine this winter .Right now it is smooth and runs great for what it is
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
cool40 September 20th 2013, 1:06 am
if you gona build a new one this winter then thrash it! 
its hard to say what a cast crank can take. stay on the safe side with the tune and maybe you wont find out.
its hard to say what a cast crank can take. stay on the safe side with the tune and maybe you wont find out.
cool40- BBF CONTRIBUTOR
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richter69- Posts : 13649
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Re: 521 2bolt block
kjett September 20th 2013, 8:13 am
Amenrichter69 wrote:spray the rods out of it........
kjett- Posts : 1169
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Re: 521 2bolt block
IDT-572 September 20th 2013, 8:29 am
If it is a motor sport 2.5 inch crank pin cast crank made by scat, you probably wont break it.
I may be wrong on who made that crank for Ford. But it has a good bit of overlap, and the cast Scat cranks are very tuff.
I may be wrong on who made that crank for Ford. But it has a good bit of overlap, and the cast Scat cranks are very tuff.
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Re: 521 2bolt block
LivermoreDave September 20th 2013, 9:07 am
cool40 wrote:if you gona build a new one this winter then thrash it!
richter69 wrote:spray the rods out of it........
kjett wrote:Amenrichter69 wrote:spray the rods out of it........
..... or, take care of it! An engine as you describe should have value. Offer it for sale while in good condition and reinvest the funds.
Dave.
LivermoreDave- Posts : 972
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Re: 521 2bolt block
v-twin September 21st 2013, 1:30 am
It's for sale . Will trade on block and heads . Would prefer new parts . Will be at Bristol oct 5 with car. I have to run Willard kinzers black corvette. He's 85 years old but dam he's good. My only chance is he will be late or red light. It's a best of 2 out of three . We raced last night and I red lighted ,after that someone broke and oiled down his side of the track. Race was put off to oct, 5. So I may put a nx port nos on it this coming week. Because we will start where we ended . Go to racethis on face book for pictures and video
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
scat crank aw brown rotating kit
v-twin September 21st 2013, 1:34 am
IDT-572 wrote:If it is a motor sport 2.5 inch crank pin cast crank made by scat, you probably wont break it.
I may be wrong on who made that crank for Ford. But it has a good bit of overlap, and the cast Scat cranks are very tuff.
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
spraying the rods
v-twin September 21st 2013, 1:43 am
the engine braking is not the problem ,its the 150 mph with oil on the tires, yes I know the guard rail will slow it down.
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
bbf-falcon September 21st 2013, 8:42 am
That's a nice running Mustang. It WILL run probably 2 tenths faster away from Bristol.
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bristol
v-twin September 21st 2013, 9:25 pm
come to Bristol oct 5 heads up racing, there's a few 760 cars. Most are mid to high 8's. You will be paired to your best time 1 tenth breakout . Last week 9.40 was cutoff out off the 16
v-twin- Posts : 52
Join date : 2012-02-15
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Location : johnson city,tennessee
Re: 521 2bolt block
bbf-falcon September 21st 2013, 10:03 pm
Bristol is a beautiful facility for sure. The only thing I have against it is the air for racing. Sounds like a fun time,Good luck;)
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air
v-twin September 21st 2013, 11:25 pm
yes it is bad but everyone has the same problem,so it's not just one person. My 8.93 recalculated to 8.60 with good air. IT recalculated to 3800 feet
v-twin- Posts : 52
Join date : 2012-02-15
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Re: 521 2bolt block
tfsbbf466 September 22nd 2013, 10:09 pm
I have a scat crank 514 that i just started spraying with a 73 jet. Plan to hit it with 93 After a tighter converter goes in. Good to know they hold up. Do the smaller stroke cranks hold up better? Mine is 4.15
Car is flying. With that big of a dish I'm assuming the compression is pump gas friendly. Do you street drive it?
Car is flying. With that big of a dish I'm assuming the compression is pump gas friendly. Do you street drive it?
tfsbbf466- Posts : 180
Join date : 2012-03-08
521
v-twin September 23rd 2013, 1:47 am
yes drive it to the track pump gas. 3.73 gear 2.75 m/t pro's 3300 lbs . 9.90 on motor at Bristol which is 2-4 tenths slower. When I first went to the track they didn't believe it was pump gas ,but one person in a Camaro saw me at the gas pumps. 8.93 150.8 with racing fuel and nitrous.
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
nitrous.f October 8th 2013, 8:58 am
so with that being said about how fast you are running! would that be the hp limit for that crank? from all the info Iam getting from this site and other sites the scat 9000 cranks are probably good for a low 9 sec to high 8sec car which is more than most are looking for! but for anything above this you are going to need a forge crank no question asked!
nitrous.f- Posts : 294
Join date : 2011-06-05
2bolt 521
v-twin October 9th 2013, 1:01 am
I'm pulling engine next week, engine will be for sale. Going with new short block
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
nitrous.f October 16th 2013, 8:56 pm
iam very impressed with what you have done with a #3300lb car! look at it on youtube and I like what I seen from the video! iam building one a little bigger but with the same interals! much run lighter car to 2700lbs. so I should be able to run the times iam looking for based on your car and times! thanks a million!
nitrous.f- Posts : 294
Join date : 2011-06-05
Re: 521 2bolt block
v-twin October 16th 2013, 10:47 pm
more info and vids on face book ,, type in racethis.
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
v-twin October 16th 2013, 11:09 pm
I've been tryingrichter69 wrote:spray the rods out of it........
v-twin- Posts : 52
Join date : 2012-02-15
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Location : johnson city,tennessee
Re: 521 2bolt block
v-twin October 16th 2013, 11:11 pm
Where will you be running?nitrous.f wrote:iam very impressed with what you have done with a #3300lb car! look at it on youtube and I like what I seen from the video! iam building one a little bigger but with the same interals! much run lighter car to 2700lbs. so I should be able to run the times iam looking for based on your car and times! thanks a million!
v-twin- Posts : 52
Join date : 2012-02-15
Age : 76
Location : johnson city,tennessee
Re: 521 2bolt block
nitrous.f October 17th 2013, 8:25 am
iam from Cleveland ohio! hey v twin iam not on facebook,so can you put some of those videos on here so I can see more! thanks!
nitrous.f- Posts : 294
Join date : 2011-06-05
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