guch1971

Hey If you got a stroked out stock short block with a blower let me know your experience! You may or may not have read my other post about Shortblocks.. I am going to do a stroker and want to know if you have had any luck or bad luck.. Let me know so you can help me make an educated decision. I had orig decided to do the 331 for the tourqe gain, but had been worried that I might end up grenading my block.. If you pushing some power let me hear about it.
I only plan on driving the car on weekends and to the track on occasion. But when its out I do plan on running somwhat hard.. I dont plan on going over 6k RPM's but right now doing anywhere from 8 to 11 pounds of boost. ( depends on the weather) And Budget is demanding a factory style block. I know a dart would be the best choice but not an option
Hope to hear from ya..
Thanks
Guch

mjr46

you will be at the limit of a stock block.. I have a built 347 with a 100 shot on it and N/A it runs mid 11's and I've yet to spray it for that fear as it'll put me well into 10's and a safe total hp level for stock blocks is around 450 rwhp

guch1971

Thanks for the reply I dont disagree with your comment at all... But I do hear more and more people making more power.. are they just on borrowed time? (very likely) I was thinking IF I ran a 306 or 331 with 8.6:1 compression , lower girdle and valley struts the lower boost from the added C.I. stock blower pully and lower RPM maybe 5800 to 6000 could I possibly be safer or am I just kidding myseslf.. since I will most likely be in the 500plus range.. and just a ticking time bomb waiting to make me once again out of luck..
I prob was in the 400 to 450 HP range on my stock block but blew a Head gasket before the block..

primetime5.0

just not gaining anymore strength with a girdle and a valley support... all a gimick.. ive seen a stock block 302 make 570 horse.. not everyone is lucky.. its the risk you take to play!

mjr46

there will be no gauranttee on a stock block.. some blow it at higher levels and others blow it at lower levels.. a good tune is key for longevity on boosted cars

guch1971

Yeah I have heard that too about the girdle I figured it wouldnt hurt though right? How is it that companies like DSS and CHP and other can make those claims? I dont get it.... How do they get away with that?
And again.. I know you are right about the power limits.. I think I may be trying to convince myself I might be a lucky one.. On a annother note . would a 306 be more reliable than a 331 because of the material removed and side loading that the stroker will put on the cyl wall.. albeit not a huge amount.. but given the thin wall the 306 should theoretically stronger no?

mjr46

strokers are fine and the bore is no larger in them then on a 306.. the stroke is the difference

guch1971

good point.. but doesnt the 331 and even more with the 347 put a side load on the cylinder wall due to the added stroke length.. And please forgive my ignorance.. I am no engineer or even mechanic.. Thanks for all the responses!

mjr46

some may say yes some may say no because there are far worse rod ratios in other engines like some chevies I believe that have held together for years!! and proven that theroy somewhat[&:]through the test of time.......347 run fine and the side load is not as much an issue as people make it out to be as the same goes for the oil burning 347 myth.. my 347 runs great and I have a few customers with 100k 347's still runing strong.....builder is key when choosing a stroker.. talk to fordstrokers.com to clear up any stroker misconceptions

AdderMk2

stroke it or boost it... but dont bother trying to do both on a stock block.


because you are just going to start all over again