okay I want to replace my cam, rockers, lifters, pushrods, and intake manifold. And I've got a few questions. (I'm using summitracing part numbers here, though I'm not stuck on ordering form them or anything, thats just where I went)
(edit: forgot to say, its a '87 if that matters)
would CCA-K12-268-4 work? any "better" suggestions?

WND-7546 ?

CCA-1318-16, or would these proform PRO-66915 work fine as well? (much cheaper, so...would they work fine aka no worrys about quality, not really worrying about them being equal in any other way)

also can i get a recomendation on pushrods? what about heads? anything i can do to them, or a relatively cheap replacement?

and finally what about headers? My exhaust isn't the greatest but its not as back as stock (by how much i'm not sure, eventually i'm going to replace it, but that comes later) its one of those fake duals 2 1/2" where the passenger side pipe bypasses the muffler and the driver side goes through it, so it "looks" legal :P


and finally I don't want a new engine, really. Cause I wanna wait on that till i can afford to replace and tranny, and anything else that might not hold up under alot of power.

Thanks,
Chris

 

'87 does matter, because you have factory roller lifters, and the center two intake manifold bolts on each side are at 72 degrees instead of 90 degrees like the rest like '86-earlier manifolds were.

I wouldn't get anything you listed. They're poorly matched with each other and don't reflect a particular performance or use goal.

If we can assume this is a street driver, start with an intake that accepts a spreadbore and has the '87-up bolt pattern. That will be a Performer or Action+ type manifold (Holley might also make a Street Dominator in that type, not completely sure). That limits the powerband to about 5500 RPMs, which is fine for a street driven 305. This also means I'm recommending you keep your stock carb and distributor (if you still have them).

For a cam, a Comp XR268-ish (Xtreme Energy type for factory roller lifters) would be a decent choice. You'd keep your factory lifters and pushrods. The Comp Pro Magnums are fine, but keep them to 1.5:1 - no need for 1.6. Proforms are posers - stay away from them.

The heads are 081 castings, which were some of the best factory castings made, believe it or nor. You'd have to go Vortecs to do better. Have 1.94" intake valves installed, do basic port clean-up work, and they'll do you well.

Headers such as Hooker 2055HKR, and free-flowing 3" of your choice the rest of the way back.

The stock air cleaner has to be modified or replaced. Dual snorkel.

 

I was planning on keeping the stock carb. also my reasoning for the single plane manifold was that I'm not dragging the car, where I want power is not from a dead stop, but while i'm already movin. and the car cruises at about 1,200 rpms anyway.. (not exactly argueing, just trying to clarify and see if you still think i shouldn't go single plane...then decide for myself)

I need to replace the lifters.

I'm about to create a dual snorkle, and run the intakes to my grille.

thanks,
chris

 

dual plane would still be better for your purpose

why would you need to replace roller lifters? are they damaged?

 

so should i stick with my stock manifold? (probally not?) I really don't want EGR do I?(doesn't seem like it, but hell I barely understand EGR :P)

 

Off the top of my head, I think most the XE series factory roller shelf grinds would require valve guide boss work. However, if you are going to do head work, then having the guide bosses milled down would not be an issue.

If you're looking for a factory roller cam to put in without head modification, try looking at the LT1 cam.

The manifold can stay. It is not considered a restriction as long as the heads, cam, and exhaust are stock. Even warmed over mods, it's not really a restriction.

 

the XE CCA-12-769-8 would need head work? I thought SpitotRs305 said it would use stock lifters?

emm you say the intake manifold isn't a restriction as long as heads cam and exaust are stock...when i'm changing all these?... is it or not? :P


okay...
CRN-10751-16 these rockers?

and assuming i don't keep stock
HLY-300-67 this manifold?

 

I don't see a lt1 cam at summit or jegs, do i have to go through GM..or does hawks have them?

also, the lt4 hot cam wouldn't work would it?

 

The LT1 cam comes out of factory LT1 motors. Look on eBay. $50 is pretty common I think.

That cam you posted just above is a solid roller. Aside from the fact that it's way too big, you need a hydraulic roller. About .470-.480" is the lift cut off on factory heads. The heads limit the lift, not the lifters.

As for rockers, for the price, the pro magnums are the best rocker.

Yes, the Hot cam has too much lift.

That intake would work, from the looks of it. But no, even after changing all of those things, it's not really a restriction.

 

i never said you didnt need to change them for that cam because i didnt bother to look at which cams you had selected if you are going with a hyd roller cam then there would be no reason to swap out the OE roller lifters... but if you are going solid roller then yes you would have to... you didnt mention you wanted a solid roller cam

 

but what is wrong with this cam... http://store.summitracing.com/partde...8&autoview=sku

you are trying to go a little to wild with the cam what might be a big cam in a 350 will be very big in a 305

this cam is a upgrade and shouldnt require any work to the heads and accomplish what you are looking for with out haveing to spin to engine to 7K to reap the benifits

 

I assumed since mention was made of working on the heads that the guides would be cut for postive stem seals, which also gives more room for valve travel, and appropriate springs would be installed. That's what I get for assuming, I suppose.

If that is done, this would be a nice cam http://store.summitracing.com/egnsea...115+4294887624 . It doesn't say "computer compatible", but the carb wouldn't mind (TPI would be a different story). I'd go that route rather than the 4x4 series.

There is a lift limit with stock factory roller lifters, but this isn't getting close.

The Holley intake is fine. You absolutely do not want a single plane - you'd make that poor 305 a real dog.

Just stick with the Comp Pro Magnum rockers in 1.5 ratio. You really can't do better than them, although they are a bit of overkill, but better than anything else linked. The Magnums would be more than adequate.

 

Yea, stay away from a single plane. I have the Weiand Action+ EGR manifold on my motor and like it a lot.

It is not the same as the non EGR Action+, it is more like the Weiand "Stealth" but with an EGR port. The Weiand Stealth (not to be confused with the Holley Stealth Ram intake) will flow well to 6500-6800 rpm and has the spread bore carb mount that you need.

If you are planning on running the stock carb with the ECM connected I personally would try the LT1 roller cam as suggested in above posts.

I also have the comp SS Roller Rockers and like them a lot. Very strong pieces that are rebuildable.

 

hey five7 which cam on that page are you talking about?

just wondering what you think

 

There are days I don't much like Summit's site. . .

The CCA-08-500-8.