Thread: 305 stroker with 3.750 crank

Tweet

305 stroker with 3.750 crank. has anybody done this and what clearance issue's are there. How much massaging is needed to clear block, counter weights, rod bolts or cam.

An exercise in futility. You can make more power with a boneyard 350 and it's cheaper. But to answer your question, the usual culprits are the rod bolt at the cam lobe and the big end of the rod at the pan rail. Check for interference also at the pin end of the rod at the underside of the piston crown. If you use Scat capscrew rods, you will not have any bolt/lobe interference.

Tech first off thank you for the info. I appreciate the help.

But over the last 2 days I have spent hours on this forum reading threw 100 pages of post reading each post that had anything to do with 305 engines. Yes it was actually 100 pages I have learned a lot read a lot of articles. I realize I need more info before picking a cam and the final selection will be determined between me and the tech people at the company I choose to pick a cam from. But asking a opinion on here is just part of the info gathering to have a more knowlegable base what company to go with.Allso what part of 305 class do you not understand. In My previous post I stated it must be a 305 I am aware of the 350 305 debate but the rules are clear IT MUST BE A 305 so you constantly telling everyone to go to a 350 will fall on deaf ears here. I know if you have said it once you ave said it a 100 times on this forum. Learned a lot off this forum but the 305 is just as buildable as a 350 IMO so cut a little break to the people that are building them they have thier reasons to do so.

With that said has anybody had any experience putting a 3.750 crank in a 305 any advice would be appreciated.

Allso experience with Sig Erson cams what do you think of them.

Can you tell us what your intentions are for this build? I'm with Techinspector that this is a bit of an odd combination.

The 3.75 stroke is typically in a 400 motor (stock) and uses a 5.565" rod.

It is for a local dirt track class must be a 305 block.

I agree, not much point to that. Put the parts in a 350 block, or just run a good 350. A mouse is a mouse, but a dog is a dog!

Don't feel bad 305racer, I also am experimenting with a 305 stroker. My reasons for doing it are,1.Why throw away a perfectly good 305 block,lets see what it can do!,and 2.Everybody's got a 350 stroker.
One day I'll finish my little engine and put it on the engine dyno to give these nay-sayers something to chew on!

Originally Posted by Sinister

Don't feel bad 305racer, I also am experimenting with a 305 stroker. My reasons for doing it are,1.Why throw away a perfectly good 305 block,lets see what it can do!,and 2.Everybody's got a 350 stroker.
One day I'll finish my little engine and put it on the engine dyno to give these nay-sayers something to chew on!

Looking forward to hearing the results.

Might be a little while...I've got more pressing concerns at the moment!

Oh, by the way, it'll be going in my avatar camaro when it's done. In case you were wondering.

Hey Sinister,

I for one like your plan. No reason for everyone to think the same, a little spice is always nice. It may or may not be futile but its damn cool when you find out for your self. Especially when your spending "Sinisters" money.

Let us know how it works.

Roland

Sure if you have to buy an engine . Then you can Find 350's Locally most of the Time From your Craigs List . But if you have a Clean SB 305 it can be built . I have Built 1975 Chevy 262 SB's that Raged on Much bigger Engine Car's

I have posted a few replies here nothing bad but hey are not showing up this is a test to see if i am being censored

Originally Posted by 305racer

I have posted a few replies here nothing bad but hey are not showing up this is a test to see if i am being censored

All new posters have to have threads approved by the moderator for the first few posts.... Keeps out a lot of the spam and other riff-raff.... Bill (Mr. Mustang) would explain the whole reason and process to you if you wanted to send him a PM..... Ain't nothing personal, just gives him a chance to catch the porn posters and others before they get started...

I guess not, The reason for a 305 is that the car is in a 305 class so the nay sayers can refrain by rules it has to be a 305 block so any help would be appreciated. I know i can not logically pick a cam at this point let me rephrase what brand of cam would most choose?