DarthVega
2 years ago

HP decision if you could only pick one, which would you pick first? Cylinder bore vs Camshaft

theog_erectusmaximus

I'm going with bumpstick first . Most .030 over builds don't really do much for HP unless you're going with .060 over punched out stroker motor . Alot of factors in building a motor . I think id pay more attention to compression ratio and then calc an appropriate bumpstick based on the cylinder heads and whether it's NA or Boosted with a power adder.

Tue Jan 25 2022 at 5:29pm

DarthVega

@theog_erectusmaximus you’re a wise man, Bore is dependent on stroke, I had a internal laugh at a oil change facility, I asked him about a recommended high zinc oil, and he said Royal Purple with no surprise to me, he asked what I’m putting it in, I told him and showed him the 302, he then started to tell me a unbelievable story πŸ˜‚

Tue Jan 25 2022 at 5:41pm

DarthVega

@theog_erectusmaximus He told me 🀣 He had a Chevelle back in his younger years, now mind you I’ve already told him about my engine being a 283 bored to a 302,
He says his Chevelle came with a 307 now I could be wrong but I think those only came in Novas, but anyway he said he bored his 307 .20 over to a 327, I almost corrected him but I didn’t have time to argue 🀣 according to his story he did this in a engine tech class at a community college, I almost wanna doubt the Royal Purple because he recommended it 🀣 he effectively bored that engine to like a 310 or something but if he payed attention or knew anything about what he was talking about he would have not said such foolishness, if people only knew that a SBC is the same SBC stroke and bore are the only thing that separates them, yes a 350 is the same size block as the 283 don’t let smoke blowers tell you differently 🀣

Tue Jan 25 2022 at 5:54pm

theog_erectusmaximus

@DarthVega omg 🀣🀣 Thats hilarious . If only it were that easy to gain some cubes πŸ’ͺ🏽πŸ’ͺ🏽. I used factory 307 specs added the 20 over using a quick online calculator but you had it damn near 100%

Tue Jan 25 2022 at 6:31pm

theog_erectusmaximus

@DarthVega as for high zinc Royal Purple HPS , Valvoline VR1 , Amsoil Z-ROD are all excellent choices πŸ‘πŸΌ

Tue Jan 25 2022 at 6:36pm

DarthVega

@theog_erectusmaximus I trust you and them, if they heard that story from him they would ask him to not associate them with himself anymore πŸ˜‚

Tue Jan 25 2022 at 7:37pm

DarthVega

@theog_erectusmaximus I got a little more appreciation for what I have since studying stroke and bore, with cylinder sleeves I can go back to a 283 or a custom journal crank stroke it to a 364, that’s a 81 cubic inch jump, I never thought about anything other than a 302 but it’s nice to have options 😎

Tue Jan 25 2022 at 7:42pm

DarthVega

@theog_erectusmaximus oh and I stand corrected, according to Wikipedia the 307 came in Camaros Chevelles Novas and Pontiac Venturas,

Tue Jan 25 2022 at 8:56pm

theog_erectusmaximus

@DarthVega I saw they used them in marine applications alot . Production ran from 1968 to 73 and yes family cars and sedans received many of these motors. Be cautious with wikipedia anyone that creates an account and i think donates or pays $$ can add their 2 cents to any post with unverifiable information .

Tue Jan 25 2022 at 8:58pm
Show more comments (4)

nik

Can’t help much here πŸ€·β€β™‚οΈ go with what makes more power πŸ˜‚πŸ’ͺπŸ’ͺπŸ’ͺ

Tue Jan 25 2022 at 7:45pm

DarthVega

@nik powers always good πŸ‘ but I’m a torque junkie too πŸ˜‚

Tue Jan 25 2022 at 7:48pm

nik

@DarthVega definitely more torque = more fun 🀣

Tue Jan 25 2022 at 7:50pm