so what's gonna be better...

[gwaii]

i have a decision to make...

i'm building a 351w to be a reliable mid rpm(4500-5000) motor that will pull from 1000-1200 rpm,i plan on using gt40 heads off a 5.0,an edelbrock performer rpm intake with a holley 625 vac secondary.

here's my quandary.i have the option of going with a flat-tappet engine running an edelbrock performer rpm cam,or a stock roller cam setup from a '96 f-series.

i know the engine in my '94 f 350 likes to rev past 5000 with no problem,just wondering if there's any clear advantage one way or the other that i may not be aware of.it's just about time to start this build,i have both blocks sitting ready.just a matter of which one to use.

 

[baddad457]

I would do the stock roller cam (in a roller block) but add a set of full roller 1.7 rockers to it. (Cobra 1.7 rollers or Crane Energizer 1.7's) This cam works great with a carb.

 

[AgPete139]

I vote the roller as well, Gwaii.

 

[gwaii]

i was kinda thinking that might be the better choice.it means that i've bought a new edelbrock cam just to stick it on the 'next time' shelf....but this engine is going to get some serious use so i'd like to do it right the first time...within the budget constraints i'm working under(that means only using parts i have at this point).edit-i can add those 1.7 rockers to the budget easilly,i have all the bottom end stuff,like arp's and a girdle and windage tray,and a balance is in the budget.shipping the parts off-island to have it done will cost more than the balance,unfortunately.

i've played with a lot of stuff in my time,but cam choice has never been one of my strong points.

thanks guys

 

[baddad457]

You won't need the girdle and other stuff for what you're doing. A stock rebuild with the better heads and induction will do you fine. You've basically choosen to do a solid 300-350 FWHP motor with that combo.

 

[shane96ranger]

X3 for the roller cam!

 

[gwaii]

You won't need the girdle and other stuff for what you're doing. A stock rebuild with the better heads and induction will do you fine. You've basically choosen to do a solid 300-350 FWHP motor with that combo.

that's exactly the range i was looking for.i was looking at bracing the bottom end just for personal peace of mind.i know the 351 is a stout block,but hey-a little extra material down there won't hurt anything

 

[purplehaze]

Not sure if you know, but just a heads up the 5.0 gt40 head bolts holes gotta be drilled out to 1/2'' to fit on a 351.

 

[gwaii]

Not sure if you know, but just a heads up the 5.0 gt40 head bolts holes gotta be drilled out to 1/2'' to fit on a 351.

yup,i was aware of that one.

thanks for the tip though