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Old 05-12-2012, 11:57 PM   #1
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302 to 306

How much would it cost to get my block bored out to a 306?!
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Old 05-13-2012, 12:21 AM   #2
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Quote:
Originally Posted by Storm13_5.0
How much would it cost to get my block bored out to a 306?!
Depends on your local machine shop. Are you looking to do it for performance?
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Old 05-13-2012, 12:30 AM   #3
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Quote:
Originally Posted by 93slowstang

Depends on your local machine shop. Are you looking to do it for performance?
I was looking at a complete new motor off of am a 306 didn't know I could just do that to the block...would I have to change any other parts of I go this route...I'm looking for performance gains
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Old 05-13-2012, 12:39 AM   #4
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Quote:
Originally Posted by FoxBody9315

I was looking at a complete new motor off of am a 306 didn't know I could just do that to the block...would I have to change any other parts of I go this route...I'm looking for performance gains
If you're going to bore it you might as well stroke it too. You might get a few hp by just boring it out but nothing serious. .030 over pistons are needed with the stock stroke and bored block for a 306.
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Old 05-13-2012, 01:24 AM   #5
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Quote:
Originally Posted by 93slowstang

If you're going to bore it you might as well stroke it too. You might get a few hp by just boring it out but nothing serious. .030 over pistons are needed with the stock stroke and bored block for a 306.
+1
and when slowstang says a few hp, thats what he means. you can get more hp with some long tube headers probably. now also like he said if you want to stroke it you will be adding alot more cubes. but you will still need supporting mods.
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Old 05-13-2012, 08:45 AM   #6
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I am gonna try an re do my car and motor this winter .. And I wanted to make my motor fresh and have some more power.. And I haven't found at 306 short blocks for a reasonable price
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Old 05-13-2012, 10:15 AM   #7
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You should just buy a trick flow top end kit.. That would put you to around 280-290rwhp also when you pull yours out and send it to the shop have them install a good set of pistons an rings.. Go forged if you plan to spray in the future!! Total cost if you can pull the engine yourself and re install.. Prob $2200 IMO just a guesstimate!!!!
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Old 05-13-2012, 10:31 AM   #8
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Thanks man!! Soo would they just hone it? Or take it to a 306? And what if I ever plan on boost ?
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Old 05-13-2012, 11:13 AM   #9
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If they honed the cyls or tool it to a 306 would depend on the amount of wear on the cylinder walls or if you told them to just take the .30 off. Not worth the gain to go .30 over if not necessary, thicker walls are worth more in my opinion. If you're spraying look into a nitrous cam and some forged internals as was said above
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Old 05-13-2012, 12:20 PM   #10
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Oh I see .. I'm new to all this so jus curiouse .. I'll prolly end up ruining boost Down the line .. So it could jus get honed and I not need to go to a 306?
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Old 05-13-2012, 01:18 PM   #11
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Quote:
Originally Posted by Storm13_5.0
Oh I see .. I'm new to all this so jus curiouse .. I'll prolly end up ruining boost Down the line .. So it could jus get honed and I not need to go to a 306?
No reason to bore unless needed or you get a stroker kit that comes with bored size pistons.
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Old 05-13-2012, 01:24 PM   #12
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So just get it honed out ?
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Old 05-13-2012, 01:31 PM   #13
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Quote:
Originally Posted by Storm13_5.0
Oh I see .. I'm new to all this so jus curiouse .. I'll prolly end up ruining boost Down the line .. So it could jus get honed and I not need to go to a 306?
Well boost is a hole other beast.. Which requires more reinforcing and correct compression ratio's.. Best bet is to start with a moderate build and go from there don't overwhelm yourself and jump right into the boost world unless you have the $$$.. Like we said.. You can run your current bottom end if all is well.. You can put new rings and bearings on the bottom end and new double roller timing chain new high volume oil pump add the correct HCI combo and you can make very good power that will definitely make you happy.. Make sure if you want a turbo car In the future to save up and build it right even your driveline.. Power will always find a weak spot and break it..

---------- Post added at 01:31 PM ---------- Previous post was at 01:29 PM ----------

If you want to hone it to clean up the cylinder walls you might as well re-ring it.. And the stock pistons are forged and can handle some nitrous : )
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Old 05-13-2012, 01:33 PM   #14
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Quote:
Originally Posted by Storm13_5.0
So just get it honed out ?
If your not worried about stroking it I would go ahead and bore it .030 over and put new forged pistons. You'll probably end up spending close to the same boring it compared to honing it. You'll still have to buy new rings either way and pistons are fairly inexpensive. It's not a hp increase but it's a good way to really freshen up your block.
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Old 05-13-2012, 01:35 PM   #15
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Oh man I can jus see the money goin now lol.. I am lookin at the trick flow twisted wedge top end kit . Yay or nay? My motor only has 90,xxx on it
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Old 05-13-2012, 02:44 PM   #16
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It's well worth it!!! Another cheap way to go is cast gt40 heads and intake and get some porting and polishing done and valve work.. But honestly the best bang for the buck is the trick flow top end kit.
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Old 05-13-2012, 02:45 PM   #17
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If you don't mind my asking , do you have a top end kit ?
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Old 05-13-2012, 04:35 PM   #18
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Lol.. Check out my profile pics... I run boost so the motors are completely built.. But I have done many head cam intake swaps and gained big power.. I have a 306 fms b303 cam AFR 165 heads w/ 1.6 RR's gt40 upper and lower.. I make 425rwhp and 483tq
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Old 05-13-2012, 04:38 PM   #19
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Dang ! Whats you 1/4 times? And how difficult of a project is it?
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Old 05-13-2012, 04:44 PM   #20
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It runs low 11's quarter,7.3'a in the eighth.. I got lucky and bought my car like this.. But have built several. It's not very difficult if you mechanically inclined and have access to some tools... I leave some things to the pros.. it's only really a bunch of nuts and bolts.. Just take your time do it right and don't get intimidated and give up.. Many of us on these forums have learned the hard way. But just think things through and ask questions.. Is this your first build??
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Old 05-13-2012, 04:47 PM   #21
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Dang that's pree damn quick.. And yes it is .. It will be .. I'm gonna work as much as I can this summer and get all I can and do it this winter ... I'm a tad nervouse
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Old 05-13-2012, 04:52 PM   #22
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you will be fine. just like 90gtnovi suggests. pay attention to detail, follow directions, and take your time. if you go with a kit it will come with directions and you should also have a haynes/chilton type book on hand for reference. goodluck
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Old 05-13-2012, 04:55 PM   #23
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Thanks guys! I'm really excited about this !
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