Thread: 1969 350 5.7 small block but which one is it??

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i got a 69 small block chevy out of the camaro but dont know which it is? the 250bhp.......255bhp......300bhp ?

its defo not the 300 lol....its pi$$ slow....so slow im questioning if its a 350 at all......does anyone know what a 350 5.7 should do 1/4 mile /0-60 in a 77 camaro car?

because the engine sounds smooth and powerful on when car in nuetral lol but soon as you gear it up its like its pulling two trucks? whats with that...

At the time of manufacture, Chevrolet stamped a number on the block deck. You can find it just in front of the passenger side cylinder head, probably under the alternator. That number will give you the skinny on the origin of the motor. If you don't know how to run it down, post it up here and one of us will help you.

If the block has ever been decked at a machine shop, the number will have been cut off and you're outa luck.

I think I'd start with the basics and do a compression test on the motor. Warm the motor up, remove all spark plugs, wire the throttle blades wide open, disable the coil and do a compression test on all cylinders.
http://www.search-autoparts.com/sear...l.jsp?id=16170

Edit: I see you have already posted CHN on another thread and it doesn't come up in the lists I looked at. I'll keep looking for you. Are you sure it's CHN? Here's a page showing where to find ALL the numbers on a small block Chevy....
http://www.73-87.com/chevy_ids/sbcid2.htm

It could be a 262, 267, 283, 305, 307, 327, 350 or 400.

Use this list of number locations to try to chase it down further, particularly cylinder head casting numbers under the valve covers and the casting number on the back of the block at the driver's side (well, driver's side in the U.S.)....
http://www.73-87.com/chevy_ids/sbcid2.htm

You said you feel robbed......

Well, here's the NADA value on the car in US$. The current conversion factor dollars to pounds is 0.607, so the low retail figure of US$ 4,150 would equate to L2519. Looks like you paid L2160 for it, so I wouldn't necessarily feel robbed if I were you.
http://www.nadaguides.com/default.as...9&z=85283&da=1

ohh no...ive just realised that it also could be the CHH 307 with just 115BHP


engine number is CHH which covers BOTH 1978 350 170bhp and 1973 307 115BHP

its certainly not good!!!

ok...what im now assuming is it IS in fact a 1973 307 with 115 bhp....

they only ever made 2 CHH letters.

1st is the above mentioned coming with a TH trans

2nd is a 1978 350 170 bhp with an auto trans

ok....

so.... this engine in the car reads CHH on the engine and it has a TH350 trans.

therfore it HAS to be the 307 right?

However....ive just got onto the bloke who sold me the car and he told me that because the camaro was originally a 4.1 straight 6 with a th350 trans

so he said this bolted straight on to the V8...now i am confused!!!

you may want to count how many times the trans shifts it might be starting in second or high gear or maybe the converter is locking up .......ted

Cheers guys,il be checkin diff on sunday. The torque converter has slight oil weap.wud that b a problem?i can hear trans change 1st 2nd into 3rd,. I took rocker covers off to reveal a number. Think it woz 462624
Have it writen dwn at home .i checkd and said it woz a 79-85.
350 with sumert like 1.91 intake

Also,it doesnt kick dwn wen i floor it in drive. It jst gradualy continues to pik up speed

That casting number is for 1976-1999 350 heads with 76cc chambers.