hyd roller vs solid flat tappet cam

[julven]

I am sure there is alot of things that can affect the answer to this Question but I am not asking for a exact number just close enough number that we can make a good choice. Which will make the most horse power on average hydr or sft cam? I am trying to talk my dad out of a solid flat tappet cam on his SBC street motor that he is building. He feels the solid will make more power and it might but I want to see if it is enough to justify having the valve train maintains. He wants to drive it allot. If it helps it will be on one of your grinds in a 4.070x3.48 w/6.0 rods 10.5:1-11.0:1 comp, 210cc RHS Alm. heads,Victor intake and 750 Race Demon carb in a 68 Camaro all steel.Thanks in advance.Jason

[Jay Allen]

I am sure there is alot of things that can affect the answer to this Question but I am not asking for a exact number just close enough number that we can make a good choice. Which will make the most horse power on average hydr or sft cam? I am trying to talk my dad out of a solid flat tappet cam on his SBC street motor that he is building. He feels the solid will make more power and it might but I want to see if it is enough to justify having the valve train maintains. He wants to drive it allot. If it helps it will be on one of your grinds in a 4.070x3.48 w/6.0 rods 10.5:1-11.0:1 comp, 210cc RHS Alm. heads,Victor intake and 750 Race Demon carb in a 68 Camaro all steel.Thanks in advance.Jason
On a Chevy, this is a tough question. The lifters availble for a SBC aren't as good as the SBF link-bar junk. If it were me and I could do "almost" anything.......I would have the lifter bore honed to Chrysler .904" diameter. Then I'd use a SFT MOPAR lobes but they'd be on a Chevy. You'd run a good SFT spring and this was be bad ass. if done "right", spring life will not be a concern and valve adjustment will be kept to a minimum.

I actually do this a lot.

Let me know if I can be of further assistance.

[julven]

Thanks Jay, we will start looking and preparing for that.Jason

[julven]

Okay Jay I talked with our machine shop about this .904 lifter and they said on the block we have (a old 60's production block) they did not feel comfortable going that big.Our machinist wanted us to talk with you about using a Ford lifter .875 to see if you felt like that would be big enough for what you were thinking about doing.Thanks Jason

[Jay Allen]

Okay Jay I talked with our machine shop about this .904 lifter and they said on the block we have (a old 60's production block) they did not feel comfortable going that big.Our machinist wanted us to talk with you about using a Ford lifter .875 to see if you felt like that would be big enough for what you were thinking about doing.Thanks Jason
If a .875" fits, then a .904" fits.

.904 - .875 = .029"

That is .0145" per side.

I'll gladly speak with him.

PM me a number.

[julven]

Thanks Jay I may have to call on you to do that but for now I am going to try some other said to be good machine shops north of us and see what they have to say.Thanks again Jason