No there isnt a problem Just ment there's 2 routes ..the other being the 700+ dollar TA roller rocker route.
You do not really have to go with the roller cam it is just better to use it since that available now. The old school cam will be fine you just have to make sure you use the right oil for breaking and running. Brad Penn and Joe Gibbs oil come to mind here. Can be bought at Summit Racing. TA sells the roller cams and I am sure you can get one from Crower and I am sure the Scott Brown cams can do it also. The Chevy rocker set up did have some problems with the plate coming up out of the head but some people have had success with the system. The person that was making them I think is not making them any more, he had a medical condition that kept him from working. The TA roller rockers are expensive but they will last forever.
For extra cubes look at the eBay nascar take out rods, with the 1.889" rod journal size rods you can add an extra .090" of stroke and with the 1.850" rod jounal size rods you can add an extra .140" more stroke. With around a .060" overbore and an extra .090" more stroke you can be just under 370 CID(368.85 CID actual). With the extra .140" more stroke and .060" overbored you would be at 373 CID. Of coarse I would recommend spending the extra around $50 to $100 to have the block sonic tested to see how far you can get away with an overbore. I have seen a sbb 350 block thick enough from a sonic test to be taken out to a 4.00" bore, with a 4.00" bore and the 3.990" stroke you would have a 401 CID sbb! Just remember if you commit to the 1.850" rod journal size the crank should be heat treated because they only make the hard bearings for the 1.850" size. With the 1.889" size you can use the soft stock Toyota bearings without having the crank heat treated. The AutoTec pistons can be bought with custom wristpin, compression distance, bore diameter sizes for the advertised price if you decide on using the nascar take out rods. The nascar take out rods will take anything a sbb can throw at them, Enginecraft has done a few sbf turbo builds with nascar take out rods that made around 1,200 HP, so for the price they can't be beat. If you are interested in this route let me know and I can help guide you down this path, even an N/A build would benefit with a set of these rods. GL Derek
By machining 0.050" to 0.070" off the heads, doesn't that screw up the intake manifold alignment? how much per side do you have to cut off the intake flanges? Edit: sorry...wrong thread...I was reading about increasing the compression by milling the heads down.
Yes it can. You might need to mill .030 or more off intake side of head. And shorter or adjustable pushrods
Is there a way to get the V8Buick links working in the original post? Or maybe its time to update the original post?
I think the whole post should be deleted as it’s all outdated and the links don’t work.... however I will let JW make that call.
I would not take it down/delete, I recommend updating the original post or completely consolidating the thread with useful posts into the first post. As a renewed 350 owner I was looking to dive into some info, but when threads fall apart with dead links it defeats the purpose of being a sticky. In fact this practice of renewal/refresh of stickies across V8Buick would be good
Same if any of the Buick folks can do some updating. I’d greatly appreciate it. Even finding a cam a step up or two from a GS350 seems impossible. I am putting a new timing chain and other accessories and hoped I’d find something that would work with stock heads but the info is a bit lost in the sauce.
The crower level 3 is unavailable? And you don’t mention year of gs350. Compression ratio makes a big difference in cams . If you’re willing to add a 24-2500 small block rated torque converter, the ta 284-88 is a good cam . Advance it 4 degrees if it’s a 71 and up low compression engine. Either cam will obviously pick up with bigger valves and some proper porting some head milling for a little more bump in compression. As the 71 and up is actually only 8.2 compression. So .030 off heads will bump you up to around 8.7-8.8.
I have a 1973 Buick Apollo 350 that came with 4bbl but wanted something a little more beefy than a stock gs350 unless it made me go the route of working the whole engine. Was hoping to drop a decent cam in and do minor upgrades to the heads and intake in the future.
Both cams are decent for what you are looking for. And will improve with later head work. Both will like convertor upgrades and rear gear upgrade. Inspect the front cam bearing well before installing new cam. The front bearing can cause low oil pressure issues so if the cam is already out, check it.
