Head & intake ?

Deuce450

Deuce450

Club Member
I'm looking at buying heads(trick flow ported by Ron Sharp), intake(holly systeMax ported by Ron Sharp), 38#inj & maf, this set up was on a 347 that worked well. My question is will it work on my 306 or will it be to much? I have a GT40 intake and heads, 24#inj, with a B303 cam. What are your thoughts?
 
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you might have to change the pistons becuase its a twisted wedge head. im not 100% sure on it though but chances are you will have too.
 
Do you plan on re-using your B303 and 24lbs injectors?

The heads and intake will work fine with your 306. Just keep the cam duration under 224 and the PTV clearance should be fine. TFS stage I or II cam with a 1.6 rocker should respond well.
 
SVTSINR said:
Do you plan on re-using your B303 and 24lbs injectors?

The heads and intake will work fine with your 306. Just keep the cam duration under 224 and the PTV clearance should be fine. TFS stage I or II cam with a 1.6 rocker should respond well.
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Yes I was thinking about using the B303 cam but I also could pickup the cam thats in the 347 now. I do not have the specs on that cam at this time. The thought is that cam has been set up for the H and I combo thats on the engine. Being my 306 is less cubes than the 347 would that combo work?


I was thinking about using the 38# inj. to help support later mods. Should I stay with the 24#'s?


Thanks Dan, I forgot about the big a$$ 1 7/8 headers also.

I know I have more questions than answers but all input good or bad is needed. Thanks Motown
 
If you are looking at staying away from flycutting the pistons to match the TW's, I would contact a reputable custom cam guy. With the advancements made with lobe profiles you can make plenty of power without cutting on anything. A cam company can make up for less duration by speeding up the lobes (ramp rates), but sometimes this can lead to P/V clearance issues. As long as you tell them EXACTLY what you have you'll be fine...oh, some food for thought: comp cams is not the place to go for a custom grind.

Also, the 1 7/8 primaries are a bit too much for this size engine, unless you plan on spinning it to 7500+ RPM. 1 3/4" primaries are typically go to around 600 HP (in general).
 
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Deuce450 said:
I was thinking about using the 38# inj. to help support later mods. Should I stay with the 24#'s?


Thanks Dan, I forgot about the big a$$ 1 7/8 headers also.
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I would stick with the 24lbs until you need more. Even if you had a tuner you would have to lean it way out for N/A on 38lbs injectors.

With the 306 I would stick with combo's that work. 1 5/8 headers and a off the shelf TFS cam would be an economical way to go. Plus we always change are combo's anyway so it's not worth the extra $150 for a custom cam your going to swap out next year.
 
come on guys 1 5/8 headers 24 lb injectors b cam.....this guy isn't ganna make any power with that bullshit.... lol.......
 
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1bad Lad said:
come on guys 1 5/8 headers 24 lb injectors b cam.....this guy isn't ganna make any power with that bullshit.......sorry mike had to say something lol.......
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I hope this is an attempt to be funny.

There are so many cars out there not running worth a crap because of the bigger is better mentality. For the heads, compression, and the cam (and the resultant RPM) that will likely be well suited for those, a 1 5/8 to 1 3/4 (at the most) primary will be plenty. On top of that the 24 lb injectors would be better suited than the 38's. I don't think anyone was supporting the use of the B cam as it was ground off technology from the 80's.

Now if he really wants this thing to make some power even N/A, a new set of pistons to get the comression up will be needed. A nasty little solid roller to allow to run up to 7500 or more or a high-rev piece from AFM will be a must. Then he can use the 38# injectors or a suitable carb. I would at that point scrap the intake an get a spider type.

Or he could keep all of the injection stuff, 38 lb injectors, the intake, the heads, put a blower on it and hope it doesn't knock windows in the pistons (or lift the ring lands, or split the block, etc.).

Its not that we don't want him to make power, but rather keep him from making a dumb mistake and wasting his time.



Here is a link that will give some idea how far you can take a small header and 38# injectors.

http://www.the-arnolds.net/Cobra/

Look in "combos compared"
 
1bad Lad said:
QuickLX said:
I hope this is an attempt to be funny.

no ur right i was just playin i don't know shit about engines my bad.......lol
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We don't question your knowledge, we all know where you work.

I have a hard time recommending a $300 custom cam for someone who knows they are going to build something bigger with a power adder. I also feel the cam that is match with the heads would be fine with the 306.

I say run the combo Mike and if you need some low end, just spray it out of the hole.

Mike, you should also look at the link that quickLX posted, he has some good stuff under the emission 306 link. I think it gives a good idea what to expect and the 4.30 gears you will need to put it in the power band.
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SVTSINR said:
1bad Lad said:
We don't question your knowledge, we all know where you work.

I have a hard time recommending a $300 custom cam for someone who knows they are going to build something bigger with a power adder. I also feel the cam that is match with the heads would be fine with the 306.

I say run the combo Mike and if you need some low end, just spray it out of the hole.

Mike, you should also look at the link that quickLX posted, he has some good stuff under the emission 306 link. I think it gives a good idea what to expect and the 4.30 gears you will need to put it in the power band.
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well i have talked to mike and i know what his goals are and i have a camshaft sittin on my desk for a really good price. i am not going to release the specs because if mike does decide to uy it then i dunno if he wants his specs released but i can assure u its a very healthy camshaft. but if he wishes i will put the specs online just to get everyones opinion and then he can make his decision form there. i mean we are talkin about a 306. can not expect any kind of big power out of it on motor without gettin a little bit radiacal with parts. now yea u can boost it or spray it with a small cam and heads and get some power but its obviously not a blower car and he's not hittin it with a 300 shot so if he wants to put down a number at the track then it's ganna take some good parts and i think we all know this.....now a big factor is if he goes with a spider intake or stays with factory style intake....if he goes to a spider he should be able to put down a real nice number. :)
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1bad Lad said:
SVTSINR said:
well i have talked to mike and i know what his goals are and i have a camshaft sittin on my desk for a really good price. i am not going to release the specs because if mike does decide to uy it then i dunno if he wants his specs released but i can assure u its a very healthy camshaft. but if he wishes i will put the specs online just to get everyones opinion and then he can make his decision form there. i mean we are talkin about a 306. can not expect any kind of big power out of it on motor without gettin a little bit radiacal with parts. now yea u can boost it or spray it with a small cam and heads and get some power but its obviously not a blower car and he's not hittin it with a 300 shot so if he wants to put down a number at the track then it's ganna take some good parts and i think we all know this.....now a big factor is if he goes with a spider intake or stays with factory style intake....if he goes to a spider he should be able to put down a real nice number. :)
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Good points Lad,
I've never spoken with Mike so I don't what his goals are for the year. I do know he drives his car alot during the summer and I was trying to be conservative so he could still enjoy it.

BTW don't edit your post that have good info in them..
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SVTSINR said:
1bad Lad said:
Good points Lad,
I've never spoken with Mike so I don't what his goals are for the year. I do know he drives his car alot during the summer and I was trying to be conservative so he could still enjoy it.

BTW don't edit your post that have good info in them..
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sounds good. well if he does go with the combo i have recommended to him he will easily have a 10 second car so we'll see what happends....:)
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The cam out of the 347 should be fine (what RPM are you going to spin). What size chamber/ flow numbers did the heads put out? If Ron did the intake, it should be a good piece as well. I was running a Holley intake and TFS heads from Ron and it was just about maxing out a set of 30lb injectors...so you might not be to far off with 38's depending on the power level/ type of driving - racing you'll be doing.
 
Well after reading these, I should have posted what I was hoping to get out of the car this year.

I want the car in the 11's, on motor, thats it. Now, with that said it must stay streetable. I do drive it to work (30 mile round trip) 3-4 times in the summer. I like to hit Tele. or Woodard on a Fri. or Sat. night. I have a limited budget that I want to spend so let say $2,000. Yes I have talked to Lad and what he said makes since, but like Svtsinr stated I don't want to waste money or time on something that will not work. The most important part is I must enjoy driving the car and my son must enjoy it as well.
 
i would run the cam i have for u. the kook long tubes and the intake ported by ron sharp and some of our top line heads. that would be a sweet ride. keepin the stock style intake and havin the efi is ganna allow for good power and good streetability.
 
To run 11's won't be hard. With a stock 302 shortblock, some ported TFS heads and a stock Holley Systemax my car went 11.40's @3,200lbs. I'm working on the same type set-up, something to take the kids to the car show with, cruise around a bit, but goes mid-10's (n/a 306). Good luck with the new combo.

Deuce450 said:
Well after reading these, I should have posted what I was hoping to get out of the car this year.

I want the car in the 11's, on motor, thats it. Now, with that said it must stay streetable. I do drive it to work (30 mile round trip) 3-4 times in the summer. I like to hit Tele. or Woodard on a Fri. or Sat. night. I have a limited budget that I want to spend so let say $2,000. Yes I have talked to Lad and what he said makes since, but like Svtsinr stated I don't want to waste money or time on something that will not work. The most important part is I must enjoy driving the car and my son must enjoy it as well.
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