Project Puff and Stuff - 6-71 Blown Boss 302

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Post  dfree383 on January 16th 2014, 12:49 pm

Here's the start...... Got a kit coming from Dyers, this should be a blast!


Project Puff and Stuff - 6-71 Blown Boss 302 Image_zps0f00a4fe


Last edited by dfree383 on January 16th 2014, 12:54 pm; edited 1 time in total
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Post  dfree383 on January 16th 2014, 12:53 pm

Here's the balance of the build so far

5.0 roller block
Ford racing forged crank 3.0 stroke
5.4 scat 4340 I beam rods
Probe flat top pistons
Ford racing balancer

Had Phillip Oakley do the machine work

F303 hydraulic roller and parts from Lem

Set of open chamber 351c 4V heads 

More to come
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Post  richter69 on January 16th 2014, 6:01 pm

Good luck.....
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Post  dfree383 on January 16th 2014, 6:43 pm

Going to put it in a 32-34 Ford street rod
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Post  bbf-falcon on January 17th 2014, 5:09 am

Thats gona be a suueet build Dave,have fun.

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Post  85bigblockfox on January 17th 2014, 9:52 am

Is all that going into a factory roller block?
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Post  dfree383 on January 17th 2014, 11:14 am

85bigblockfox wrote:Is all that going into a factory roller block?

Yep..... I consulted with the witch doctor and a little voodoo magic is being channeled for it.  Laughing

We are looking at a 20% under drive for 7-8 pounds of boost and is is a purely street driven application
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Post  supervel45 on January 18th 2014, 4:57 am

dfree383 wrote:Here's the start...... Got a kit coming from Dyers, this should be a blast!


Project Puff and Stuff - 6-71 Blown Boss 302 Image_zps0f00a4fe
That is a very nice intake. Could you give some more info about it. Did not know they still had one for 6-71's and 302 4v head blower conversion's AKA Blown Boss. I'm sure you calculated your under drive ratio and all, to you appliciation. The 20% just struck me as a high underdrive percentage. Are the Blades Teflon tipped? I was running 7% (not 100% positive on this number, seems like Small block was 9% ) underdrive on my 6-71, which was Weiands BBC ( Jeg's sent me the wrong Cogs) set up on a 355cid, and it put out 10lbs of boost. When I flipped the pulley's it produced 15 Psi in overdrive. This was with a 112 degree Lobe seperation mech. roller 241/251 at .050" lift .570-.590 lift. With this cam it had no problem hitting 7000 rpm quickly. I was supprised at how smoth the cam idled with the Huffer, as when I had it ground I was expecting a little more lope at idle. The heads where poor at 287cfm intake 183cfm exhaust. I did have about 50 more cubes though, which makes alot of difference, as do other variables. Anyway that's a killer look looking setup your building.

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Post  DFI429 on January 18th 2014, 5:48 pm

dfree383 wrote:F303 hydraulic roller and parts from Lem

Dave, was the F cam preferred?  Over the years I've always read a general distaste for the "alphabet" cams in the 302.  Just wondering  Question
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Post  dfree383 on January 18th 2014, 7:54 pm

DFI429 wrote:
dfree383 wrote:F303 hydraulic roller and parts from Lem

Dave, was the F cam preferred?  Over the years I've always read a general distaste for the "alphabet" cams in the 302.  Just wondering  Question

They work fine for the goals of this project. They are old and better stuff does exist, but they do work fine and last
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Post  dfree383 on January 18th 2014, 7:55 pm

The intake is an offy tunnel ram base with a blower top that's installed by Dyers
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Post  supervel45 on January 19th 2014, 12:56 am

What are going planning for fuel supply, carb, injection, other?

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Post  dfree383 on January 19th 2014, 1:28 am

I have 2 600 eddies I'm going to try and a pair of 600 holleys I may give a go
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Post  66prostreetfairlane on January 23rd 2014, 12:21 pm

that's going to be a cool setup for the street and in a nice light car like that it should move real good too! Twisted Evil 
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Post  Dave C. on January 23rd 2014, 12:35 pm

Why don't more guys run blowers at the track?

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Post  richter69 on January 23rd 2014, 1:38 pm

because 1980 wants its power adder back......
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Post  738drvr on January 23rd 2014, 3:52 pm

Dave C. wrote:Why don't more guys run blowers at the track?

Pure and simple. Weight and cost. Back before turbos and cent. blowers, it was nitrous or the big huffers. The big -71 blowers are big, heavy, generate lots of heat as well as power and are expensive. Nitrous was a lot cheaper. Now with the advent of turbos and Prochargers, Paxtons, Vortechs, etc... We have a lot more options. We have seen some developments with nitrous use and delivery. Big blowers are really old school. They are very cool looking and work well but for the money, you can do a procharger or a turbo set up and make more power all under hood for a lot less weight/heat. I have a nitrous car, BDS blower car and want to build a turbo/cent. 600" engine for my T'bird. I like all three.

What's your flavor?
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Post  dfree383 on January 24th 2014, 2:39 pm

richter69 wrote:because 1980 wants its power adder back......

The iron chef called and he wants his strainer back....
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Post  dfree383 on January 27th 2014, 10:15 am

Bottom ends together, waiting on parts to finish the top end

Project Puff and Stuff - 6-71 Blown Boss 302 Image_zps960ea24b

Project Puff and Stuff - 6-71 Blown Boss 302 Image_zps4505cb6b
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Post  Darrin Gorham on January 27th 2014, 5:46 pm

About twenty years ago I was at BDS and they had a few engines from every family in the showroom. They had a Boss302 with a real low profile intake 671 and their electronic bugcatcher hat . Best looking engine in the room!

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Post  Darrin Gorham on January 27th 2014, 5:48 pm

What are you going to put it in Dave?

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Post  res0rli9 on January 27th 2014, 8:41 pm

Darrin Gorham wrote:What are you going to put it in Dave?

"( Going to put it in a 32-34 Ford street rod )"

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Post  jasonf on January 28th 2014, 12:46 am

Your missing all the stuff on top... Smile

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Post  dfree383 on January 28th 2014, 9:28 am

It's on the way, the Dyers kit is at the polishers.
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Post  4thHorseman on January 28th 2014, 4:08 pm

dfree383 wrote:Going to put it in a 32-34 Ford street rod

Bad ass!

 Twisted Evil


I have something similar in the works.  BBF with a 671 at very low boost.  More for the look/sound than anything.  I really dig the old school hot rod looks.
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