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> Building a 302 / 3.00" stroke / 8,500 RPM, V-8 Car
drive-ability
post Mar 4 2007, 01:31 AM
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I have started gathering parts to build a large journal 302. This is the engine this car needs to really work. The 350 is made to move a truck, where as a 302 makes the best balance of HP and torque. Ya the parts are expensive about 3 times the cost of a 350 but you only live once. (IMG:style_emoticons/default/beerchug.gif)
I'll keep you V-8 guys posted!
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drive-ability
post Mar 5 2007, 11:19 PM
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(IMG:style_emoticons/default/icon8.gif) Well I chickened out (IMG:style_emoticons/default/drunk.gif) Looking at the cost was one factor but mostly I built this car to be a nice driver. For now I am going with a G.M. crate long block and use my heads and a different cam. This will cost under 2K and work perfect for everyday driving. I will however be sourcing the other parts for the 302 and maybe in a year or so it will be ready. You guys know and have said 8k is hard on a small block and can get expensive. Funny thing is my wife is all for it but I had to draw the line for now... (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/icon8.gif)
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3liter914-6
post Mar 6 2007, 02:10 AM
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QUOTE(drive-ability @ Mar 6 2007, 12:19 AM) *

For now I am going with a G.M. crate long block and use my heads and a different cam. This will cost under 2K and work perfect for everyday driving.


If you're going to dump the heads and the cam from the longblock, for under $2K you can build a pretty bitchen short block (assuming you are willing to assemble). $3-400 will get you a ready to build 2 or 4 bolt block. Throw in an Eagle/Scat nodular steel crank, forged rods, a set of hypers, and you've got a shortblock rated for 7K/500hp.

$400 Block
$200 Scat 9000 Comp crankshaft
$250 Eagle SIR I-beam rods
$250 Speed Pro flat-top hypereutectic pistons
$100 Piston Rings
$100 Bearings
$175 Balancing
$400 misc (seals, timing gear, oil pump, pushrods, gaskets, shipping)
_________
$1875

You can match or beat these prices on eBay, and get better deals by checking Chevy forums.

I had this exact combo in my Volvo with an LT4 HOTcam and a set of AFR 195CC cylinder heads. I never got a chance to fully tune it*, but it was very smooth, and certainly capable of 400hp once I got the timing sorted. It had great low end power (pushing 1000lbs less I'm sure it'd be even better), and a really nice top end that came on around 3.5K and pulled like crazy to ~6.5K. Your valvetrain is going to be the limiting factor in how high you can rev it.

*it ate a lifter at 300 miles (damn Comp Rs), and the bearings are shot. While it's down I'm throwing in a set of Mahle PowerPak pistons and a forged Eagle 3.50" crank. The valvetrain is getting a set of beehive springs & LS7 lifters, as I originally didn't expect to make power beyond 6K.
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Posts in this topic
drive-ability   Building a 302 / 3.00" stroke / 8,500 RPM   Mar 4 2007, 01:31 AM
Twystd1   I will remind my friends with Z06 Corvettes, They ...   Mar 4 2007, 02:19 AM
messix   I will remind my friends with Z06 Corvettes, They...   Mar 4 2007, 02:31 AM
Porcharu   I will remind my friends with Z06 Corvettes, They...   Mar 8 2007, 12:03 AM
byndbad914   I will remind my friends with Z06 Corvettes, The...   Mar 8 2007, 08:11 PM
marks914   I'm doing one right now as well. Large journ...   Mar 4 2007, 03:32 AM
Crazyhippy   I've driven a few 350ish HP 302 914's and ...   Mar 4 2007, 03:29 PM
Andyrew   Sweet!! I definately will be watching this...   Mar 4 2007, 06:13 PM
drive-ability   I have been talking to the engine builder, he...   Mar 4 2007, 10:22 PM
dakotaewing   I have been talking to the engine builder, he...   Mar 5 2007, 10:12 AM
Crazyhippy   Can do alot better than a ZZ4 for the $...   Mar 5 2007, 01:11 AM
wbergtho   I'll be keeping my eye on this one.....Hmmm......   Mar 5 2007, 10:49 AM
andys   Did I miss something; I didn't see mention of ...   Mar 5 2007, 01:02 PM
KELTY360   Did I miss something; I didn't see mention of...   Mar 5 2007, 01:15 PM
andys   Did I miss something; I didn't see mention o...   Mar 5 2007, 02:40 PM
wbergtho   Let's see....8500 RPM coupled to a 930 gearbox...   Mar 5 2007, 01:35 PM
Dr. Roger   Let's see....8500 RPM coupled to a 930 gearbo...   Mar 6 2007, 12:39 AM
Crazyhippy   Let's see....8500 RPM coupled to a 930 gearb...   Mar 6 2007, 12:50 AM
byndbad914   Driveability - I would be scared of a short block ...   Mar 5 2007, 04:14 PM
drive-ability   :sick: Well I chickened out :DRUNK: Looking at th...   Mar 5 2007, 11:19 PM
3liter914-6   For now I am going with a G.M. crate long block a...   Mar 6 2007, 02:10 AM
Twystd1   302 Ford... 302 Chevy. I biffed that one... HARD...   Mar 6 2007, 12:45 AM
byndbad914   I think that is a good choice for now IMO and know...   Mar 6 2007, 12:49 AM
drive-ability   I think that is a good choice for now IMO and kno...   Mar 6 2007, 07:46 AM
byndbad914   Considering your experiences building engines and...   Mar 6 2007, 04:09 PM
drive-ability   byndbad914, Thanks for the information, I would ...   Mar 6 2007, 09:23 PM
drive-ability   Well I have the engine in, everything all clean an...   Mar 9 2007, 12:10 AM
Twystd1   I know where a 2007 ZO6 engine and tranny with ECU...   Mar 9 2007, 01:14 AM
drive-ability   I know where a 2007 ZO6 engine and tranny with EC...   Mar 9 2007, 08:30 PM


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