|10-04-2013 04:29 PM|
let me just say that in my unprofessional opinion, pontiacs are one of the most well designed engines. hands down.
sure theres always someone faster, who makes more power. but how many other manufacturers can you take a 326 head, slap it on a 455, keep in stock, a water pump, a distributor, fuel pump, oil pump, oil pan, valve covers, among other items, and slap it on my 326 my 389, my 400, or my 455?
when i was a super novice, please note that after 15 years, i am still a novice, i was plagued with a 1968 pontiac lemans sport. 354,th350,10bolt, and a bent frame. i bought that car for 500 bucks, drove it almost 50,000 miles with little or no problems, besides tires and brakes. after that car got me so far, i fell in love.
now i am the proud owner of a
42 4 door pontiac with a cadi clip, pontiac 400 th400 12 bolt
42 2 door pontiac on a 71 caprice frame, 400, ST-10 and a 9"
64 2 dr hardtop bonne 389 and a th400,
68 lemans sport, 354 m-21 9" and early 60's truck arm rear sus.
68 tempest convertable with a 389, m-22, 12 bolt
66 Hallett v-drive flatbottom with a soon to be 421.
30 olds 5 window with a worked over 354 edel heads, st-10, solid cam, 9"
and soon to have a full framed 63 ranchero with a pontiac 440
oah, and can you chevy freaks change intakes without moving the distributor???
|10-04-2013 02:58 PM|
|10-03-2013 09:47 PM|
|10-03-2013 08:05 PM|
|11-03-2012 03:28 PM|
wallaceracing.com has tons of good info.
Back in high school I had a 1970 GTO boy could it move.
I wonder if a Poncho engine could fit in a 93 F/S GMC truck and how much trouble it would be? I have a set of 1968 15 casting number heads that have never been touched they were off a big Catalina.
My dream would be to have a 400 in a 69 Firebird.
|11-03-2012 12:49 PM|
A Pontiac Representative from the Dallas Zone Office came 200 miles to my home town and agreed to replaced the rear end and drive shaft under the 50,000 mile drive line warranty. He told me to get a new drive shaft out of a Firebird that was siting on the new car sales lot and install it. I bought a Schiefer Rev-Loc clutch and pressure plate at J.C. Penney. What is a miracle, he knew I had been drag racing the car with 11" Goodyear wrinkle wall slicks!
The dealership installed a 4.33:1 4-pinion Saf-T-Track because the open 10-bolt 2-pinion differentials were too weak for drag racing with good bite. The 4.33:1 would cause the stock hydraulic camshaft in the 400 CI engine to run out of breath at 4,000 RPM , just like a rev limiter.
I re-built the OE #48 heads, roller rocker arms, BB Chevy valve springs, Crane ZIP-510 solid flat tappet camshaft, and 1965 Corvette edge orifice restricted lifters. That woke that engine UP!!!! I raced at Dallas International Motor Speedway in Lewisville Texas, turning 13.80 -14.0 ET with 1969 Firebird HO exhaust manifolds and chambered exhaust. In 1970, at DIMS, I was beaten in the first round of D/S by a 1969 American Motors 390 CI AMX, with a mid-13 ET.
I still have the Pontiac Crane ZIP-510 solid lifter camshaft:
Single pattern, solid flat tappet
.534" valve lift w/1.5 rockers
310 deg. duration @ .004" lift.
254 deg. duration @ .050" lift
84 deg. overlap
.028" I - .032" E lash
108 deg. LSA
102 deg. LCA (5 deg. advanced)
|11-03-2012 11:31 AM|
|11-02-2012 08:25 PM|
I agree...your 428's got the 375 HP and more with just a diligent rebuild, cam, headers and intake (some where factory rated at that). I've built a few with great results.
|11-02-2012 06:13 PM|
I love Pontiacs. They are awesome.
Lots of good stuff available for pontiacs nowadays.
I have a 350 in my 64 now.
Have a 389 punched to 400 that will be completed in a few more months.
I also have a 400 that is all stock, just for a spare.
I also have a 428 from a 68 bonneville that needs a complete rebuild, not because it is worn out, just from setting so long
Contrary to what some of the posts here say....375 horses on pump gas is easy with a pontiac 400.Without breaking the bank.
Knowing what to do is key.
Waiting for the OP to come back so as to help him out.
|11-02-2012 06:03 PM|
they didn't have what they have for pontiac when I defected..
forged rods where huge money.. alum heads unheard of, unless you had deep pockets..
|11-02-2012 04:50 PM|
|LATECH||Looks like the OP got scared off. Too bad, we could handle a few more pontiac fans around here. We also need a couple good Mopar guys and some ford guys. Everyone is such the fan of the bowtie, which is fine, but variety is the spice of life, even in cars.|
|11-02-2012 02:22 PM|
But even at 406 ci (400 w/a 0.030" over bore), a Pontiac can shine. My way of building it would use basically a stock crank, forged rods, cast pistons, and casting 12, 13, 16, 62, 670, or similar heads or if the budget allowed, aluminum Edelbrock or KRE heads. An engine built w/these parts and a streetable cam could make an easy 450-500 hp and as much torque, w/enough vacuum for power brakes and an idle that wouldn't shake the fenders off the car.
Arm yourself w/info if you plan on getting into Pontiac engines.
Pontiac info and sites
|11-02-2012 09:26 AM|
|11-01-2012 11:10 PM|
I've got 3 aftermarket Indian Adventures Pontiac blocks, one standard 10.23" deck and two at just over 11", and all have splayed billet mains. Chevies don't show me squat!
|11-01-2012 10:43 PM|
|idontdrivericeieatit||Yea I dont deal with pontiac or olds or buick just figured it was bout same engine between the gm line I will have look into that more. So I guess disregard what I said bout my 400 as it dosent apply to you good thing I didnt get a pontiac 400 but really I just went after casting numbers that everybody said to use I think it was 509 casting and it was 2 bolt which I had converted to 4 bolt if pontiac is so bad wouldnt he be better just get a chevy or like I did for my new engine and get dart block|
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