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  #31 (permalink)  
Old 04-01-2013, 07:08 AM
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re S.I.R.

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Originally Posted by 69 widetrack View Post
Vinnie, the S.I.R.? Are you talking about the track just outside Saskatoon?

Ray
that was Seattle international raceway.

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  #32 (permalink)  
Old 04-01-2013, 07:13 AM
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camel bump heads

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Originally Posted by KyleG View Post
I enjoy my 461 double hump heads. They have been tinkered with a little. Studded, guide plates, the small stuff. Not sure if the springs are the stock style springs. Not trying to steal the thread, but how much are these holding me back compared to the other heads in question?
It depem
nds on what is under the heads? The flow numbers are not terrible and if you have a mild engine then not much.especially a 327 or smaller,the flow numbers are fair.
To quote tech,its all about the combination not just one part.I would think a modern head could add 30 plus hp,again,not knowing whats under the heads its just a guess.If you match all the components to the head flow then new design heads can be worth over a hundred hp in perfect combination,,
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Old 04-01-2013, 07:25 AM
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OKay Vinnie, there's an S.I.R. (Saskatchewan International Raceway) just outside of Saskatoon...why they call it International I don't know...but thought maybe you had spent some time in the Prairies in the late 70's or early 80's.

Ray
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Old 04-01-2013, 07:26 AM
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Quote:
Originally Posted by vinniekq2 View Post
It depem
nds on what is under the heads? The flow numbers are not terrible and if you have a mild engine then not much.especially a 327 or smaller,the flow numbers are fair.
To quote tech,its all about the combination not just one part.I would think a modern head could add 30 plus hp,again,not knowing whats under the heads its just a guess.If you match all the components to the head flow then new design heads can be worth over a hundred hp in perfect combination,,
Thanks for the reply! Right now it is 350, .030 over, pistons are flat tops, 4 valve relief (Quoted on here as rebuilders pistons), cam is 508 lift with 313 duration (flat tappet), torkii 2 intake(Not sure if spelled right lol), 750 holley vs. Also has long tube headers, hei. No idea on cr.... Think that somes it up. Is this considered, mild?
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Old 04-01-2013, 07:40 AM
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heads

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Originally Posted by KyleG View Post
Thanks for the reply! Right now it is 350, .030 over, pistons are flat tops, 4 valve relief (Quoted on here as rebuilders pistons), cam is 508 lift with 313 duration (flat tappet), torkii 2 intake(Not sure if spelled right lol), 750 holley vs. Also has long tube headers, hei. No idea on cr.... Think that somes it up. Is this considered, mild?
If the engine has the correct deck height its a good candidate for better heads.If the cam is a flat tappet hydraulic,it will have a lumpy idle.( i prefer a solid cam with those specs)
The torkerII intake is not my favourite but it works ok.750 is a good size carb.If the H.E.I. is stock,then that needs serious attention.

what is this engine living in? Have you ever raced it?When I had my 67 Camaro I tried a lot of combinations similar to what you are running.
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  #36 (permalink)  
Old 04-01-2013, 07:43 AM
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prairies

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Originally Posted by 69 widetrack View Post
OKay Vinnie, there's an S.I.R. (Saskatchewan International Raceway) just outside of Saskatoon...why they call it International I don't know...but thought maybe you had spent some time in the Prairies in the late 70's or early 80's.

Ray
never been past Calgary.Ive watched and pitted in Calgary,never raced there. Raced at Seattle international/Bremmerton/Mission old and new
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Old 04-01-2013, 07:49 AM
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Quote:
Originally Posted by vinniekq2 View Post
If the engine has the correct deck height its a good candidate for better heads.If the cam is a flat tappet hydraulic,it will have a lumpy idle.( i prefer a solid cam with those specs)
The torkerII intake is not my favourite but it works ok.750 is a good size carb.If the H.E.I. is stock,then that needs serious attention.

what is this engine living in? Have you ever raced it?When I had my 67 Camaro I tried a lot of combinations similar to what you are running.
It is hydraulic. Does have a really lumpy idle lol Its in my 70 c10. It is my dads old child hood hot rod. lol When we rebuilt it, we tried reusing what we could for now. reason for the intake and the gm hei still... It WILL be getting high rise and not sure on other dizzy. Behind it is 2200 stall, turbo 400, 4.11.

Not trying to hijack the thread, but what would be other good head choices? And mostly, why? I am still trying to learn the difference in the heads. I understand they have different valves sizes, porting, duh. I'm just still trying to discover what all are for performance gains.. Mostly, why the performance gains. I like to learn...
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