Big Joe pontiac 301 stroker build

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tjs44
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Big Joe pontiac 301 stroker build

Post by tjs44 » Tue Dec 11, 2018 10:33 am

Guys,Joe helped me build a engine that pretty much everyone said would never work.It was a lowly 301 short deck 80-81 economy block.Its a really long read because we ran into so many diff areas that had not gone into.God bless Joe Sherman!Tom
http://forums.maxperformanceinc.com/for ... p?t=710524

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Re: Big Joe pontiac 301 stroker build

Post by pdq67 » Tue Dec 11, 2018 5:51 pm

What size did this end up at, CI and "B & S"....

pdq67

tjs44
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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Tue Dec 11, 2018 6:35 pm

383,4.035 and 3.75 as I remember,might have to go back and read it to confirm.Tom

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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Tue Dec 11, 2018 6:43 pm

383.77 Tom

Curtis Mc
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Re: Big Joe pontiac 301 stroker build

Post by Curtis Mc » Wed Dec 12, 2018 10:32 am

Nice work.

I read the whole thing and was feeling a little let down as you provided a lot of details along the way and then around page 17-18, after the first dyno which was respectable but outside of expectations, you made a clearance change. Then the next meaningful update was that you and Joe opened up bearing clearances and then wham-o, your expected power was there. My "disappointment" if you will, was what clearances and by how much?

Great stuff, just looking for a little more detail of what appears to be a pretty significant change.

Thanks!

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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Wed Dec 12, 2018 10:40 am

Joe used Scat BBC rods in the build and he must have missed something in the side clearance of the rods.The engine started loosing HP on the dyno and we shut it off.When opened up there were a couple big ends of the rods going blue.The engine was eating itself up as the oil could not get out.Replaced the rods,cut the crank 10,put in new bearings with the proper side clearance on ALL rods and life was good.Joe was embarrassed he missed it.Human mistake.Really no magic,just proper clearance.Just glad we caught it before something REALLY bad happened.Tom

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Re: Big Joe pontiac 301 stroker build

Post by Curtis Mc » Wed Dec 12, 2018 11:38 am

Thanks, makes sense, in all regards.

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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Wed Dec 12, 2018 12:35 pm

Our own Jon Schmidt made to spacers for the build.Tom

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Re: Big Joe pontiac 301 stroker build

Post by ClassAct » Wed Dec 12, 2018 1:19 pm

Can you tell us more about the cylinder heads and what work was done to them? Did you use a 30 degree seat on the intake valve?

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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Wed Dec 12, 2018 7:53 pm

Dave at SD performance did them,he did a 260 CFM CNC port job on them,no clue on the seat specs.He chose a 2.05 intake and left the 1.66 exhaust because of the small bore.They were originally on a low performance 455.#15s.I know they floes 260@600.Tom

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Re: Big Joe pontiac 301 stroker build

Post by gnicholson » Wed Dec 12, 2018 10:04 pm

It may be in the link you posted but what made you guys decide to start with a 301 as light duty as they are?

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Re: Big Joe pontiac 301 stroker build

Post by tjs44 » Wed Dec 12, 2018 10:23 pm

Because EVERYONE said I could not do it.Was all my idea,Joe just did the build and did the dyno work.There were so many issues to overcome.I like challenge.Just started a old school RA V build with some new school additions.This stuff keeps me off the streets and getting in trouble.Tom

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