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  #1 (permalink)  
Old 02-26-2009, 06:43 PM
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building a 1966 327 wanting advice

i am building a 1966 327 wanting to run on pump gas as an everyday driver looking for about 450 horses im going to run a 400 tranny with 4.56 gears just wanting advice im not wanting to dump alot of money into this project at one time im gonna take about 6 months to build this engine should i run dome pistons or flat tops? should i run an air gap intake or not? how big of a carb?h.e.i dist.? i want something i can run on the road and on the track

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Old 02-26-2009, 06:58 PM
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you will need premium aftermarket heads to achieve this(1100.00 and up) and around 11 to 1 (93 octane) and some rpm, (7000?) to make this happen...
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Old 02-26-2009, 07:06 PM
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Sounds like you want your cake and eat it too? Everyday driver that you take down the 1320 and drive to church on Sunday. Well, a 327 is not the best platform to do that with BUT I'm sure 'it's what you got to work with'. Expect to drop a bit of cash on some pretty nice pieces and I guess you know that you are going to be making this 450hp around 6,500rpm or higher. Do you have power breaks and steering? I'm usually in the minority on this but you'll probably be served better by a Vic Jr. or a similar type single plane considering the rpm you'll be running and some track use. Dome or flattops will be decided by how you arrive at your final compression ratio- which should be in the neighborhood of 10.5:1 or a tick higher. I would be comfortable with the GM 1053 steel crank. I'm probably in the minority on this too but I would find some aftermarket rods, if it was a 350 I would be ok with polishing the beams, having them shot peened, resized and ARP bolts but I don't put the same trust in even the heavier 327 SJ rods. A great set of heads are necessary to acheive this power level, 200cc Dart Pro-1's, 195cc AFR's come to mind. A solid roller cam would help you out a lot but probably a solid flat would work as well. I would expect a solidly built 327 long block to be around $5000.
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Old 02-27-2009, 08:25 AM
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327 or 350?

i have a 350 that i could use, i just wanted something that was going to rev quicker. all the tracks around me are 1/8 mile, and i dont have any long stretches of highway; so whatever im going to do has to be quick.
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Old 02-27-2009, 12:09 PM
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Quote:
Originally Posted by djackson88
i am building a 1966 327 wanting to run on pump gas as an everyday driver looking for about 450 horses

I swear, it seems like there is one of these silly threads every month..

If you are building a naturaly aspirated motor the quick answer is "YOUR DREAMING"!!!

Rediculous the way HP#'s are tossed about like 450 hp is an easy thing to accomplish reguardless of what you start with. Do a little research. The L-79 was a pretty hot 327. It had 11:1 compression, that gave the little 327 a nice power bump but its a bad mix with todays weak *** gas. It made 350 HP which was actually pretty impressive for a well manered factory 327.

Go with flat top pistons, Vortec heads and a more modern cam and the heads and cam will offset the power loss you will see vs an l-79 from droping the CR back down, not much more.

The baddest factory 327 had 11:1 dome pistons, a solid cam, 202 fueler heads, forged crankshaft, heat treated and shot peened (pink) rods and Rochester fuel injection. It made 375 HP. So unless you have a supercharger in mind you may want to get your head out of the clouds and modify your power expectations a bit..
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Old 02-27-2009, 12:37 PM
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Quote:
If you are building a naturaly aspirated motor the quick answer is "YOUR DREAMING"!!!
No, actually 450hp is very acheivable with a 327, it just takes significantly more money than a larger displacement engine.

Quote:
i have a 350 that i could use, i just wanted something that was going to rev quicker
Take that 350 block and put a 3.75 stroke crank in it- 383 is your best displacement to start from.

'revving quicker'- this is probably one of the famous myths associated with the small block displacements of 327, 302, and 283 CI. A shorter stroke may rev higher in the rpm range more safely on the agregate than a longer stroke sbc but they don't necessarily 'rev quicker'. Now if you had a 43lb. crank, a profiled 6"rod and a lightweigh piston (and a lightweight aluminum flywheel in a stick car) then sure, it'll tach up quicker. The overall volumetric efficiency may also play into the perceived notion of 'taching up' quicker or slower for a given engine.
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Old 02-27-2009, 08:44 PM
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350

how does a 350 .040 over with a steel crank, sealed power flattop pistons, 6 inch rods, vortec heads, victor jr. single plane intake, 508/508 lift cam, and msd h.e.i distributor
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Old 02-28-2009, 05:51 AM
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Quote:
Originally Posted by djackson88
how does a 350 .040 over with a steel crank, sealed power flattop pistons, 6 inch rods, vortec heads, victor jr. single plane intake, 508/508 lift cam, and msd h.e.i distributor
around 400 hp
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Old 02-28-2009, 05:32 PM
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We hear about "balanced and blue printed motors" all the time, but never Balance and blue print your ride". Think about this a moment and it will save a lot of grief. You want to do a monster 327 and hook it to a TH400 and 4.56 gears and put it in a ???? vehicle, take it to the strip and drive it up and down the streets/roads. OK, fine. the 327 is a great fun motor to play with: the TH400 will rob you of about 45 HP over a straight drive and about 30 over a TH 350. 4.56 gears are a grin when you want to smoke tires, red line quickly etc, but not necessarily something you want to drive around on the streets with. Also, a 9 inch Ford rear will eat about 15 more HP than a 10 bolt Chevy and the 10 bolt will handle the 327 fine. What is the vehicle you are going to street and strip? The final part of your blue print is to go with the lightest stuff you can live with when you are going with smaller displacement motors.

If the weather is nice on March the 14th, come to the K Mart on Patton Ave, Asheville between 10 and 2 and you can look at a couple of 2700 pound vehicles: one has a nice 327 and the other a 383, both fuel injected and ready to go. I'll be glad to talk "Blue Printing Your Ride". This is a local car show so there will be lots of knowledgeable builders there.

Trees
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Old 03-01-2009, 05:14 PM
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i am building a 1983 chevy c-10 its my every day ride so im just building it a little its heavy but all it has right now is a 305 and its wore out im going to run a 700r4 tranny for a little while but im wanting to put a muncie 4 speed in it if i can find one i would like to run across a car with one so i can get the pedal assembly and all
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Old 03-03-2009, 11:19 AM
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Quote:
Originally Posted by GenYnNC
No, actually 450hp is very acheivable with a 327, it just takes significantly more money than a larger displacement engine.
.

Yes, 450 hp from a carbureted 327 is indeed very "achievable". But not "running on pump gas for a daily driver" as was the goal in the original post. Two different worlds there..
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Old 03-03-2009, 08:31 PM
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400 horses sounds like a good goal for now do you have any suggestions on torque maybe a few pointers
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Old 03-04-2009, 04:07 PM
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350 with edelbrock rpm package, every bit of 425 hp. sdpp vortec heads, with rpm combo can save you money, and cost you a little power 425 vs around 390-400. you will need a 2500 stall minimum, to run a small block 350 making 400hp, in a half ton pickup.
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Old 03-04-2009, 08:45 PM
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thanks for everything
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