Inliners International
Posted By: 74 chevy need help with 292 head/valve - 08/11/10 03:51 PM
I am putting together a 292 six to go into a 74 chevy pickup.
I am trying to get 300 Hp, more torq,good pull & better sound for this truck. is this asking to much?
what valve should I put into this head? the block is going to be bored 30 over & a little better than mild cam,
not sure what tranny I am going to use just yet.
I am using a 390 4 barr. carb & headers that I am found at a swapmeet.I have watched all the diff. ways to put togather motors/heads.I got leo's book. help I am confused
I am new in the inline crowd.
Posted By: Harry 6674 II 5760 Re: need help with 292 head/valve - 08/11/10 04:37 PM
I'm also new to this six banger stuff but from what I've read is 1.94-1.60 is the sizes of choice. Thats what I'm going with and I'm looking for about 500 hp sooner or later.
Posted By: panic Re: need help with 292 head/valve - 08/11/10 06:10 PM
You have the book.
What does it say?
You just need cyl head work,raise compression,mild camshaft.

Lump port,porting,camshaft w/appropriate specs,talk w/comp cams for that,mill the cyl head.

I am thinking the 390 carb might be a bit small,but will work just fine.

If you really want some added torque,add some DCOE Webers,but they are pricey.

I always prefer a soild cam over a slow reacting cam,epecially a Clifford hyd cam & there price is not great either. Not impressed w/their cams @ all.My car would always run better running other cams than w/a Clifford cam.

I ran solid cams on the street & they do not require much adjusting after they are broken in.

When choosing a solid over a hyd cam,,,you can run up to about 10 degrees more duration for example,,A hyd cam w/a duration @ .050 of 210 degrees duration, & with a solid cam w/roughly same specs,you can increase cams duration of 220 degrees duration @ .050 & get about the same idle quality,,,but will make more power everwhere + added top end power.

MBHD

Posted By: tlowe #1716 Re: need help with 292 head/valve - 08/12/10 01:52 AM
Yep 1.94/ 1.60 are good valves sizes to go with. While reworking the head , doing the bolt in lumps and port/ relieving the head will be needed to get to the 300 hp level.

The 390 carb will come up just shy of the 300 mark, still a good choice.
A Clifford 270 cam and Clifford intake will also help. Tom
Posted By: 74 chevy Re: need help with 292 head/valve - 08/12/10 11:44 AM
I have seen on here that someone did dino test on the 292
How can I get the info or can I buy it?
I know yall all pitched in to get it,,please
Posted By: panic Re: need help with 292 head/valve - 08/12/10 11:46 AM
Sorry, my mistake - I do that a lot.
Posted By: 74 chevy Re: need help with 292 head/valve - 08/12/10 11:46 AM
the 390 carb I thougt was the best carb to go on the 250?
what would be best? I guest I am wrong
Posted By: Harry 6674 II 5760 Re: need help with 292 head/valve - 08/12/10 04:56 PM
I would think a 600 would work good. I have a 302 stock small block chevy that came with a 780 but it will spin pretty tight.
Posted By: Twisted6 Re: need help with 292 head/valve - 08/12/10 07:39 PM
no need to pay for that info.It can be Free \:\)
many have also used the 450 and the Edelbrook 500cfm.
Posted By: 74 chevy Re: need help with 292 head/valve - 08/15/10 08:21 PM
how can i get the info?
I would love to see the info from the dino testing!!!
Posted By: 74 chevy Re: need help with 292 head/valve - 08/15/10 08:31 PM
How about the holley 650 double pumper.I have a new one from my vega 283 days. I have one still in the org. box, I got it in 1985 for the vega I was building then..I sold it when my son was born.. you know the old better half said to get rid ofit..can I rejet it & use it??
 Originally Posted By: 74 chevy
how can i get the info?
I would love to see the info from the dino testing!!!

Pay your fees to Tlowe,then you can have all the dyno testing info he did.


MBHD
Posted By: tlowe #1716 Re: need help with 292 head/valve - 08/15/10 10:16 PM
PM sent.
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