chevy guys please help!!! why do most small block chev headers say " WILL NOT FIT ANGLE PLUG HEADS"????

Answer 1

simple, it is because most SBC heads have rectangular exhaust ports but the ones on angle plug heads are round and quite a bit bigger.

Answer 2

On most Chevy small blocks the plugs stick straight out from the heads. On angle plug heads the plugs are angled away from each other and that can interfere with the header tubes on headers that are for non angle plug heads. Angle plug heads are a specialty item and were never installed on a factory motor and were a "racing" item generally

Answer 3

there were 2 different cyl head that chevy made with angle plugs the last 3 numbers on the cyl head casting are 361 and 362 1 was early fuel injection and the other was early carb mostly the fuel injected ones were on the corvette and both heads were rated around 290 hp to 365 hp depending what options were ordered with the car they were also nick named double bump heads the reason that the note with the headers say that they wont fit angle is they are made for later models of heads as the angle plug heads were made only until the early seventy's

hope this helps and gives a little bit of info

Answer 4

Because sometime in the sixties Chevy made a cylinder head for their hi performance small blocks where the spark plugs screwed in on an angle instead of straight in the hopes to get more horse power.. That's why.

Answer 5

Because there is no way to install the plug wires as the plugs on most of the cylinders would be pointing right at the header tubes.

Answer 6

Some high performance heads have the spark plugs screwing into the head at an angle instead of straight out.

Answer 7

i've installed headers on some chevys before. first of all, the only headers we deal with in the shop are Doug Thorley Headers. we remove the plugs and plug wires before we put the headers in place. once we put the headers in, we fasten them with 2 bolts to get an idea of how they sit. i haven't seen any problems with them getting in the way of the spark plugs, but if they do, i recommend you try a different brand of headers.

Answer 8

This too humorous for words, yet a pair of years in the past it may desire to have been me. I went to workstation class to verify till now i bought and the 1st element i grow to verify grow to be the plug into the wall , then 2d is it grew to become on and 0.33 grow to be verify for power!!!! C-instant grow to be an indication that I lost this methodology and upon social gathering I lost it!!! It makes you experience so clever. attempt finding out to purchase the workstation professor eighty.00 a whack thats what he could have used!!!!

Answer 9

some high performance cylinder heads have spark plug holes set at an angle to facilitate larger valves.........these heads need special header design................hope this helps!

Answer 10

spark plugs won't clear the headers and if they would you would burn your plug wires right off on the hot headers.