FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#41
|
||||
|
||||
I finally got the engine pulled, it is in fact original to this car, making it an original 455HO car, block and Vin match. Still stuck, im probably just going to pull it apart.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#42
|
||||
|
||||
Bill, do you know who the original dealer was?
(and address if so)
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#43
|
||||
|
||||
That'll teach those know-it-alls on bookfaces who don't know about these cars ;-)
|
#44
|
||||
|
||||
Sorry , I don't have any of that info.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#45
|
||||
|
||||
Yes lol. lots of people back peddeling on their comments , some got out of sorts and not happy to admit they were wrong .
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#46
|
||||
|
||||
guess i missed it, what were the know it alls saying?
|
#47
|
||||
|
||||
"NO 455HO outside of A & F bodies. XF code is ONLY a base 455 from a Grand Prix, NOT a B-body!!! I'm right and you're wrong AND stupid to boot!!"
The know-it-alls were especially out in force on this one. It was sweet when the Protect-O-Plate and block and car all matched the VIN. |
#48
|
||||
|
||||
It was on Pontiac Midwest Connection page on fb, there a few posts I started there
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#49
|
||||
|
||||
The 455 nomenclature in 70 was confusing. None of the factory brochures refer to any of the 455's being an HO but some other factory literature did. There were two basically different engines:
The lower performance engine was only offered in the B bodies, rated 360 horse and like the 69 428-360 it was a 2 bolt main, small valve heads (basically the 400 2bbl high compression heads), 4 bbl, with a small single snorkel air cleaner with no chrome dress and the 066 cam. Optional on A, B, G was a higher performance version with large valve heads (same 10 or 10.25 ratio compression, depending which factory spec you read), larger valves, 067 cam, dual exhaust and a dual snorkel air cleaner. On the B and G it was rated at 370 horse but on the GTO it was rated 360, apparently the GTO's chrome valve covers and air cleaner lid cost 10 horsepower! What was missing on the B and G from previous years was the traditional HO big inch engine with the long branch manifolds and chrome dress. This is reflected in the option price of the 455's in 1970 The basic 455-360 in the B cars was standard in the Bonneville and was a $105.32 option on cars that had the 400-290 as standard equipment, this was the identical price for the 428-360 in 69 Catalina's. The 455-370 option on the B's cost $97.49 on a bonneville versus the 69 428 HO costing $149.55 on a bonneville. Similarly on a GP the 455-370 (the only 455 offered on a GP) was $57.93, the exact same price as a 69 428-370. However the 69 428-390 was $176.94 extra. I think the change in 70 to sort of split the features difference between the true 428 HO engines of previous years and the regular 428's was smart. By dropping the HO manifolds and special higher flow exhaust pipes of the 428-390 and the chrome dress up kit they were able to substantially lower the cost of that higher output engine. If you think about it the cost of ordering the "good 455" on a Bonneville was really only about $65 if you were going to order duals anyhow on the base 455.
__________________
My Break Away Squad 1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops) 1969 LeMans (2dr & 4dr Hardtop and a Cvt) 1969 LeMans Safari 2 seat Wagon 1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop) 1969 Catalina (3 Cvt’s & a 2dr hardtop) 1969 Ventura 2 Seat Wagon 1969 Executive 4dr Sedan 1969 Bonnie Cvt 1969 Bonnie 3 Seat Wagon (2 of them) 1969 Bonnie Brougham (4dr Hardtop & Cvt) 1969 Grand Prix SJ (2 of them) 1969 2+2 2dr Hardtop (Canadian model) |
#50
|
||||
|
||||
This had dual exhaust also, but just log manifolds. Last plates on the car are dated 1977, so possibly all original. Not sure if all Bonnevilles had a dual exhaust crossmember as well.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#51
|
||||
|
||||
I think all Pontiacs through 1974 had dual exhaust crossmembers. It wasn't until 1975 and the advent of Cat convertors that the crossmembers had only a single hump. Also, both 455 engines had the 067 cam shaft, as per the Service Manual, the AMA Specifications and my 70 Bonneville 455 360 that I have owned for 41 years.
|
#52
|
||||
|
||||
Quote:
Correct me if I'm wrong but, I believe the '70 455HO had the 068 cam(?).
__________________
Tim 1970 Pontiac Bonneville 1970 Pontiac Catalina 1970 Buick GS Stage 1...12.17@109+ |
#53
|
||||
|
||||
Manual transmission cars did. 067 for autos.
|
#54
|
||||
|
||||
__________________
Tim 1970 Pontiac Bonneville 1970 Pontiac Catalina 1970 Buick GS Stage 1...12.17@109+ |
#55
|
||||
|
||||
All the cross members on A,B,G cars up to 74 were made to receive duals regardless of if the car was so ordered.
The cams I referred to in my previous post are for automatic applications since 99% of these cars were. My reference for cam usage was factory power train specification charts. It’s possible changes were made during the model run or even between the chart release and the start of production.
__________________
My Break Away Squad 1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops) 1969 LeMans (2dr & 4dr Hardtop and a Cvt) 1969 LeMans Safari 2 seat Wagon 1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop) 1969 Catalina (3 Cvt’s & a 2dr hardtop) 1969 Ventura 2 Seat Wagon 1969 Executive 4dr Sedan 1969 Bonnie Cvt 1969 Bonnie 3 Seat Wagon (2 of them) 1969 Bonnie Brougham (4dr Hardtop & Cvt) 1969 Grand Prix SJ (2 of them) 1969 2+2 2dr Hardtop (Canadian model) |
#56
|
||||
|
||||
several years ago, i had a few of the 70 bonnevilles with the HO and got into several discussions with the "know it alls" telling me they didnt make them. i would just pull out the phs sheet that clearly shows it and shut them up.
|
#57
|
||||
|
||||
Bill, I would have posted this on F-book, but Tiger would have probably called it Photoshop'd. Or, still argued they didn't make them.
__________________
So long, farewell. |
#58
|
||||
|
||||
He laughed at me when I said they didn't make many, less than 2000 (right around 1890 or so I think).
|
#59
|
||||
|
||||
Pretty clean on the inside of the engine, flipped it over to try soaking pistons from the bottom.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
#60
|
|||
|
|||
Interesting - it does not look like it has the "usual" long branch HO manifolds. Looks like a standard center dump manifold on the left side.
__________________
Jim K in PA 1967 GP HT 428 1967 GP convert 428 1957 Chieftain 4D HT |
Reply |
|
|